“No Entry into New South Wales”: COVID-19 and the Historic and Contemporary Trajectories of the Effects of Border Closures on an Australian Cross-Border Community

: Given its intensity, rapid spread, geographic reach and multiple waves of infections, the COVID-19 pandemic of 2020/21 became a major global disruptor with a truly cross-sectoral impact, surpassing even the 1918/19 inﬂuenza epidemic. Public health measures designed to contain the spread of the disease saw the cessation of international travel as well as the establishment of border closures between and within countries. The social and economic impact was considerable. This paper examines the effects of the public health measures of “ring-fencing” and of prolonged closures of the state border between New South Wales and Victoria (Australia), placing the events of 2020/21 into the context of the historic and contemporary trajectories of the border between the two states. It shows that while border closures as public-health measures had occurred in the past, their social and economic impact had been comparatively negligible due to low cross-border community integration. Concerted efforts since the mid-1970s have led to effective and close integration of employment and services, with over a quarter of the resident population of the two border towns commuting daily across the state lines. As a result, border closures and state-based lockdown directives caused signiﬁcant social disruption and considerable economic cost to families and the community as a whole. One of the lessons of the 2020/21 pandemic will be to either re-evaluate the wisdom of a close social and economic integration of border communities, which would be a backwards step, or to future-proof these communities by developing strategies, effectively public health management plans, to avoid a repeat when the next pandemic strikes.


Introduction
Soon after its existence became public in late January 2020, COVID-19, the disease caused by the coronavirus SARS-CoV-2 [1], rapidly developed into a pandemic in the globally interconnected world of business and leisure travel [2]. At each national level, government reactions to curb or slow the progress of COVID-19 have involved the reduction of international arrivals to repatriation flights, limitations to domestic travel, limitations to crowd sizes, the temporary shut-down of non-essential businesses and the restriction of human movement during periods of "lockdown" (stay-at-home orders) [3][4][5]. In addition, in some jurisdictions, lockdown orders were applied at the sub-national level [6]. As the year 2020 progressed, many countries experienced a second and even a third wave of infections [7,8] with recurrences of small clusters even where COVID-19 could be largely suppressed. At the time of paper acceptance (on 2 June 2021), 165.2 million people had been infected on all continents in all but seven countries, with a global death toll of 3.4 million [9]. The recurrence of COVID-19 infections led to a renewal of lockdown orders and movement restrictions, including border closures. There is only limited literature on the effects of border closures on the actual movement of people and the social and economic costs this caused. The impact has been profound, however, knowing that international movement of colonial/state borders had been employed as public-health measures in the past, their social and economic impact had been negligible at the time due to low cross-border community integration. Concerted efforts (since the mid-1970s) to forge a true cross-border community have led to the effective and close integration of employment and services in the Albury-Wodonga region, which were significantly impacted when the state border was suddenly and unilaterally closed as part of COVID-19 public health measures.

Materials and Methods
This paper employs a mixed methods methodology, encompassing standard historic research, historic and current statistics, document analysis and lived experience. The historic information was sourced from contemporary regional and metropolitan newspapers digitized by the National Library of Australia [28] and legislation and regulations as promulgated by colonial and (later) state governments; historic and current statistical data were obtained from published census publications as well as data sets provided by the Australian Bureau of Statistics; press releases and other government publications provided the context of the management of the COVID-19 pandemic. The discussion of the impact of the border closure during the COVID-19 pandemic is augmented by lived experience observations, both personal and by fellow residents, by virtue of the author living in the border area under discussion. Where required, these are identified as "pers.obs".
The study area is Albury-Wodonga, a cross-border community of 96,000 people, and a number of smaller satellite communities, located in south-eastern Australia (Figure 1).  Given that this paper provides a conceptual discussion of the subject matter, rather than an experimental design, the structure of the paper deviates from the standard IMRAD format and presents discusses the subject matter in the form of contextual narrative. The on occasion detailed description of the historic trajectory lays the groundwork for an understanding of the present social and economic condition of the study area. A section on preconditions describes the nature of the border area prior to the establishment of European borders and shows that the Murray River was a liminal zone rather than an administrative and later political border. These are discussed by describing the creation of separate political entities with customs points, the subsequent removal of these following Australia's Federation and the concerted efforts to merge two cross-border towns into an integrated social, cultural and economic community. This contextualises the discussion of the nature and impact of the imposition the border closures on the local community. The discussion of the historic trajectories demonstrates why the impacts of the border closures during the COVID-19 pandemic had greater effects on the cross-border community than previously.

Preconditions
It appears that prior to the European invasion, the Murray River was not a border, but a liminal zone for Indigenous Australian groups that had their centre of gravity in adjacent areas. Thus, in the Albury-Wodonga area, the Waveroo (Minubuddong) were reputed to have accessed both banks of the Murray [29] as were the Wiradjuri [30,31]. Fords were essential locations that facilitated and maintained cross-river communication.
The arrival of European settlers invading Indigenous Australian lands along the Murray commenced soon after the traverse by Hume and Hovell in 1824 [32]. At the same time as European colonisation expanded, increasingly marginalising and displacing the Indigenous communities as owners of the land [33], European settlers acquired and utilised Indigenous knowledge of the river and fords suitable for crossing. In the Albury-Wodonga region, the initial alienation from Indigenous ownership occurred in 1835, with the creation of the Mungabareena and Bonegilla Runs [34][35][36] and the erection of a store at the location at a long-established river crossing at the confluence of Bungambrawatha Creek with the Murray [37,38]. That crossing was chosen in favour of nearby crossings which were less suitable topographically ("Yarrawudda") or politically ("Mungabareena"), with the latter being next to the permanent Wiradjuri settlement site [33]. In consequence, the township of Albury was formally laid out adjacent to the Bungambrawatha crossing in 1839 [36,39].
For Europeans, the Murray did not form a liminal zone but a barrier that had to be overcome, usually by the establishment of punts followed by bridges. The universal pattern of 19th century crossing points is that of a main community on one side of the river and a small bridgehead community on the other (Table 1). The productivity of the surrounding hinterland and subsequent flow of goods and communications defined which of the paired communities would become the larger of the two, even in cases where the other was founded first. Albury continued to expand as a rural service centre with all produce being shipped to Sydney and all goods obtained from there [36,41]. Wodonga, initially surveyed as Land 2021, 10, 610 5 of 26 "Belvoir" in 1852 and renamed to "Wodonga" in 1874 [42,43], gradually developed from a single pub/hotel location into a bridgehead town extending along the Sydney-Melbourne road [44]. The first formal option to cross the Murray rather than to use the ford was a privately-owned punt that operated on the Albury side from 1844 onwards. This was replaced by a government-owned ferry in 1849 and then by a formal bridge in 1861 [36]. The bridge, combined with the creation of a formed roadway across the Murray floodplain, ensured safe and reliable crossing in all but situations of extreme spring floods when the floodplain might be impassable for heavy wagons. Just before the bridge had been opened to overcome the physical barrier represented by the river, however, a new political barrier had been created.

Emergence of the State Border
Coming from Tasmania, European pastoralists invaded the south coast of Victoria and settled in Portland Bay (1834) and Port Philip Bay (1835), eventually establishing settler communities that gradually, but systematically colonised the surrounding areas to the Great Dividing Range, displacing traditional Indigenous owners in the process [45,46]. Despite attempts by the colonial government to prevent the establishment of a colony, a fait accompli was created with the surveying of the township of Melbourne (1837) and the establishment of a semi-autonomous colony in 1839 [46], which led to the formal formation of the separate colony of Victoria in July 1851 [47].
Deeply steeped in British administrative traditions of survey and land partitioning, the lands offices in Sydney and Melbourne had long been using waterways as natural, and thus easily definable, boundaries that could also be readily identified in the landscape [48]. Thus it is not surprising that the Murray River conveniently running from the east to west was declared to be the border between the two colonies. Only in the Australian Alps, a land border had to be defined, using an arbitrary line from Cape Howe on Australia's east coast to the most eastward approach of the Murray River [49,50]. Given that the river was a resource in terms of navigation, fish and potentially power generation (with water wheels driving flour-and sawmills), New South Wales retained the rights to the river and ensured that the colonial boundary was formed by the southern bank of the river [51]. Albury and Wodonga had become border towns.
In 1852 both New South Wales [52] and Victoria enacted customs legislation, but it was not until three years later that inter-colonial regulations focussing on the Murray River trade were introduced. The introduction of the Customs Act in 1855 (NSW) [53] and the Murray Customs Duties Act of the same year (Victoria) [54], caused a dramatic decline in inter-colonial commerce on which Albury depended [55]. The lifting of the customs duties in December 1855 was short-lived [56], as they were reintroduced in 1860 [57]. What followed was a sequence of lifting and reintroduction of customs duties [58,59] that confused and annoyed border residents [60]. The customs duties were finally abolished with the Federation of the Australian colonies on 1 January 1901 [61].
To allow for the intensification of agricultural production and reduce the costs of transportation, while at the time directing the trade to their own metropolitan centres rather than, literally, down the river to Adelaide [62], both Victoria and New South Wales developed hub-and-spoke railways systems, centred on their respective capital cities [63][64][65]. One of the quirks of the colonial period, however, was that both colonies were adamant that their railway gauge was preferable, with the inevitable result that when the railway lines finally met at the Murray, neither train could progress beyond the termini in Wodonga (1872) and Albury (1881). Even though the Victorian line was extended from Wodonga to Albury in 1883, the break in the gauge required the transfer of all goods and passengers from one train to the other, until rectified in 1963 when the NSW gauge was extended to Melbourne [66,67].

Effects of Federation
When the Commonwealth of Australia eventuated in 1901, the primary effect, on a domestic level, was the uninhibited movement of people and goods across colonial (and henceforth state) borders [68,69], even though the practical implementation did not occur until 1913 [61]. While the Federation created a single country, the powers of the new nation were restricted to those that the former colonies were happy to surrender to as a central government (e.g., foreign affairs, defence, racial legislation). Critically, the colonies retained all powers associated with land management (incl. agriculture), natural resources, education and health. Colonial concepts and rivalries (as exemplified by the railway gauge) were readily ported to state realities. Even today, 120 years since the Federation, state rivalry still persists, resulting in a dissonance of legislative, regulative and administrative approaches [70].
While the Murray River represents the formal border between New South Wales and Victoria, and thus forms the boundary of different land laws, planning rules and health regulations, it is not an absolute breakpoint. Alternative borders did, and still do, exist. At the Federation, Australia had been divided into military districts, with Military District 3 encompassing Victoria. In 1911 that district was enlarged, now taking in some of the border communities north of the Murray, such as Corowa, Moama and Mulwala (44th Battalion area), while Wodonga, Barnawartha, Chiltern and Tallangatta (57th Battalion area) south of the Murray formed part of District 2 centred on Sydney [71]. A reorganisation of the districts in 1939 extended the Military District 3 to encompass the Southern Riverina to the Murrumbidgee (but not including Wagga Wagga) [72].
There is an additional, "cultural" divide with a broadly similar boundary: the "Barassi Line". Victoria, as well as the border region along the Murray River, primarily follow the sporting code of Australian Rules Football, while the rest of New South Wales, from about Wagga Wagga northwards, follows Rugby Union and Rugby League [73]. Similarly, differences in the quality of roads and the density of the road network meant that much of the produce of the southern Riverina east of Corowa went to Melbourne, rather than Sydney [67].

Albury-Wodonga
The effects of the Federation on Albury-Wodonga were primarily the removal of customs duties, making the interstate exchange of goods cheaper. Albury continued to develop as a major rural service centre, in part driven by its access to both railway gauges. Wodonga continued as a bridge-head community.
The fluidity of the borders in the post-Federation era was an important element in 20th-century Australia. Lived experience in the Albury-Wodonga over the past 30 years can attest that, until the COVID-19-induced border closures (see below), the border was irrelevant in people's daily lives, manifesting itself largely in quirks like car registration being more expensive in New South Wales and Victoria having slightly different traffic rules, such as permitting U-turns at traffic lights.

19th and 20th Century Border Closures
Even though during colonial times the border was open for traffic and goods transfer, albeit subject to customs duties, the border was not always open for commerce and communications. In fact, there were a number of unilaterally decreed closures. The same occurred in the period after the Federation, when trade and movement of people were supposedly wholly unrestricted.

Border Closures during Colonial Times
Following the outbreak of pleuro-pneumonia in Victoria, New South Wales restricted all cattle imports across the Murray from August 1861, leading to a full border closure in early November until early 1862 [74,75]. The manifestation of the disease in Albury in late November 1861 caused a reverse, with Victoria closing its border along a stretch of the river from Cudgewa Creek to a point 10 miles downstream of Wahgunyah, with pounds for animal quarantine set up at the crossing points (bridges) at Albury and Wahgunyah [76]. Given that all heavy goods transport at the time relied on bullock teams, and bullock teams had been implicated in the spread of the disease [77,78], all cross-border transport of wool, wine and grain was effectively curtailed, severely affecting the economy of border towns and the adjacent rural communities. At the end of the same decade, New South Wales closed its border to Victorian sheep from March to May 1869 due to an outbreak of scab [79,80].

Post-Federation Border Closures
While after the Federation people and goods could, at least in theory, move freely between states, public health and agricultural issues soon emerged, which had remained under the control of the states. Some of these concerns resulted in travel restrictions and inspections of travellers and vehicles. In 1904, for example, New South Wales sheep from selected areas were prevented from entering Victoria for fear of anthrax [81], while in the following year Victorian fruit was inspected for fruit flies on import to New South Wales.
The first major border closure occurred during the pneumonic influenza pandemic of 1918-19 ("Spanish flu") which cost between 17.4 and 50 million lives globally [82]. Once pneumonic influenza was detected in Victoria, New South Wales unilaterally closed its borders on 20 January 1919. A buffer of 10 miles was established on either side of the border that allowed residents to cross, provided that they were disease-free and had quarantined for seven days (later four days) in a non-affected area within the zone [83,84]. Although not intended [85], the border closure interrupted the flow of goods and mails between many border communities [86]. It did not prevent the disease from crossing state boundaries [87,88], however, since local knowledge of unpoliced crossings allowed the restrictions "being evaded at many points" [89,90]. These movement restrictions disrupted many cross-border social linkages, in particular during the initial period.
While the majority of the newspaper coverage comments on the impact of the closures on the interstate traffic in goods and people, there is ample evidence that it also impacted the cross-border community of Albury-Wodonga at a local level. Newspapers commented on "marooned people from this State [NSW, ed.] who are anxious to return home. The hotels and private houses of Wodonga are filled with those people" [85] and noted that "many Wodonga people who work in Albury have been unable to reach their business place. Others have had to seek accommodation in Albury" [91].
In early March 1919, the influenza pandemic had firmly established itself in New South Wales, obviating the need for border closures. Upon entry, however, Victorian residents still had to produce a medical certificate vouching that they were influenza-free [92]. Indeed, the border closures during the 1919 influenza pandemic saw an inconsistent approach to policing, with some bridges policed systematically, while the river often remained unpatrolled at less well-established crossings. To allow through-traffic by trains, travellers had to submit (at their cost) to medical examinations in Sydney and at arrival in Melbourne. Enterprising individuals circumvented this by booking the train to Albury, crossing the border by taxi to Wodonga, where they booked a seat on the train to Melbourne [93,94]. In response, Quarantine officers were placed at the Albury bridge at random intervals. People wishing to avoid quarantine detention resorted to crossing the bridges when not staffed, using less frequented crossings or even swimming the river [89,90,95,96]. The police responded by increasing their presence which included patrolling the river by boat [95,96]. Many of those who crossed illegally were eventually tracked down and placed in quarantine [97].
Other closures were more selective and specific. The rapid development of heavy road transport in the 1930s, hauling goods interstate, posed a threat to the viability of state-owned railways. Consequently, New South Wales (in 1931) and Victoria (in 1935) imposed restrictions on interstate road traffic, until Privy Council in London declared this unconstitutional in 1947 [98,99]. Unlike the politically motivated border closures to long-haul heavy goods traffic, the other border controls were motivated by public and agricultural health.
Between August 1937 and April 1938, when News South Wales prevented Victorian children under the age of 16 from entering unless they could produce a medical certificate vouching that they had not been exposed to a contact suffering from infantile paralysis (poliomyelitis). Special constables were commissioned to police this at all border crossings from Victoria [100]. Finally, to combat the fruit fly, in June 1959 Victoria prohibited the import of a range of fruits into the state and instituted checks on imported fruit at border crossings [101]. In the Albury-Wodonga area, inspection stations were established at the Albury railway station (for goods shipped by rail) and on Causeway Island (on the floodplain) to inspect all road traffic. To emphasise the scientific need for this disruption of the cross-border traffic, fruit fly inspectors staffing the road blocks carried note boards and wore white laboratory coats ( Figure 2) [102]. This practice was discontinued and replaced by mobile spot checks in 1980 [103].
the river by boat [95,96]. Many of those who crossed illegally were eventually tracked down and placed in quarantine [97].
Other closures were more selective and specific. The rapid development of heavy road transport in the 1930s, hauling goods interstate, posed a threat to the viability of state-owned railways. Consequently, New South Wales (in 1931) and Victoria (in 1935) imposed restrictions on interstate road traffic, until Privy Council in London declared this unconstitutional in 1947 [98,99].
Unlike the politically motivated border closures to long-haul heavy goods traffic, the other border controls were motivated by public and agricultural health.
Between August 1937 and April 1938, when News South Wales prevented Victorian children under the age of 16 from entering unless they could produce a medical certificate vouching that they had not been exposed to a contact suffering from infantile paralysis (poliomyelitis). Special constables were commissioned to police this at all border crossings from Victoria [100]. Finally, to combat the fruit fly, in June 1959 Victoria prohibited the import of a range of fruits into the state and instituted checks on imported fruit at border crossings [101]. In the Albury-Wodonga area, inspection stations were established at the Albury railway station (for goods shipped by rail) and on Causeway Island (on the floodplain) to inspect all road traffic. To emphasise the scientific need for this disruption of the cross-border traffic, fruit fly inspectors staffing the road blocks carried note boards and wore white laboratory coats ( Figure 2) [102]. This practice was discontinued and replaced by mobile spot checks in 1980 [103].

Decentralisation
While Indigenous Australia prior to the European invasion had essentially been a decentralised and distributed occupation, colonial and later Federal Australia had always been centralised. Some resource extraction and industrial centres (e.g., Ballarat, Bendigo, Lithgow, Port Kembla) notwithstanding, the European population focussed on the mercantile and small-industrial capacity and the resulting employment opportunities in the respective capital cities. The common denominator of the period until the early 1970s is that while cross-border commerce, as well as cross-border social contact existed, the level

Decentralisation
While Indigenous Australia prior to the European invasion had essentially been a decentralised and distributed occupation, colonial and later Federal Australia had always been centralised. Some resource extraction and industrial centres (e.g., Ballarat, Bendigo, Lithgow, Port Kembla) notwithstanding, the European population focussed on the mercantile and small-industrial capacity and the resulting employment opportunities in the respective capital cities. The common denominator of the period until the early 1970s is that while cross-border commerce, as well as cross-border social contact existed, the level of integration of the cross-border communities remained limited. In all paired communities, one community was significantly larger, while the other continued to function, in essence, as a bridgehead. Albury-Wodonga was no different, as evidenced by the overall population figures ( Table 2). Changes to communications infrastructure (the bridge in 1861) and political arrangements (Federation in 1901) are well reflected in the changes to the relative proportion of the two communities, followed by periods of proportional stability ( Figure 3). An effective plateau of Wodonga's population, being about one-third of that of Albury's, was reached after World War I and remained stable for 50 years. That changed when the Whitlam Labour government was elected to power in 1972. Now, the Commonwealth government embarked on an ambitious program of decentralisation, planning the establishment of a number of regional growth centres in the wheat-sheep belt of SE Australia, with state and federal governments providing financial incentives for companies to relocate production there [104][105][106]. One of these was Albury-Wodonga, which was formally announced on 25 January 1973. Planning and execution were handed to the Albury-Wodonga Development Corporation (AWDC), which was given wide-ranging planning powers to acquire and subdivide land in order to develop both Albury and Wodonga. This led, inter alia, to the Greenfields communities of Thurgoona (Albury) and Baranduda (Wodonga), both of which have since then become nuclei for further expansion. While the national growth centre strategy was abandoned with the change of government at the next election [104], the ADWC continued, albeit less well funded and later (in 1992) it was disembowelled by the removal of planning powers, as a land management agency until its formal wind-down in 2003 [104]. While the AWDC could embark on a unified planning strategy, it remained hamstrung by the vast range of administrative and jurisdictional anomalies created by differences in New South Wales and Victorian state legislation [105,126]. The lack of a national approach, coupled with the return of planning powers to the local councils in 1992, saw the resurgence of parochial interests, with both Albury and Wodonga competing with each other for businesses and residents [104,105].
In the 1980s and 1990s, the combined rural service centre of Albury-Wodonga began to feel the impact of the decline of the railways and the rise of road transport. A number of its large wool stores were forced to close, such as Younghusband's (1986), Farmers and Graziers Wool Store (1997) and Dalgety's (2002). The flour mill closed in 2008 and the paper mill (founded in 1983) closed in 2019. Increased globalisation and competition from countries with cheaper labour saw a decline in production, resulting in the closure of Macquarie Textiles in 2013 [127], while the DSI automotive transmission plant (founded as Borg-Warner in 1970 facilitated by industry incentives) [128] was closed in 2014 when its Chinese owners repatriated the IP [129].
While the economic impact on the communities forced the realisation that Albury and Wodonga should collaborate rather than compete, parochialism and individualism abounded. Even though the two councils made a number of attempts at collaboration, as documented in various Memoranda of Understanding between 1998 and 2017 [130][131][132], the real drivers for integration were the State governments who had the power to overcome the vast range of border anomalies [126]. While the 2001 push by the State governments to create a National City failed, largely due to intransigence by one of the local coun-cils [105], integration occurred on a gradual, yet systematic level. Over the past decade, the health systems, in particular, have become closely integrated with all obstetrics, for example, in Wodonga and all oncology in Albury [133,134]. A multi-governmental level agreement on further integration and cross-border planning and regulatory harmonisation was announced in mid-2020 [135].
Land 2021, 10, x FOR PEER REVIEW 10 of 28 Figure 3. Development of the population of Albury and Wodonga with significant events marked (for data see Table 2). While the AWDC could embark on a unified planning strategy, it remained hamstrung by the vast range of administrative and jurisdictional anomalies created by differences in New South Wales and Victorian state legislation [105,126]. The lack of a national approach, coupled with the return of planning powers to the local councils in 1992, saw the resurgence of parochial interests, with both Albury and Wodonga competing with each other for businesses and residents [104,105].
In the 1980s and 1990s, the combined rural service centre of Albury-Wodonga began to feel the impact of the decline of the railways and the rise of road transport. A number of its large wool stores were forced to close, such as Younghusband's (1986), Farmers and Graziers Wool Store (1997) and Dalgety's (2002). The flour mill closed in 2008 and the paper mill (founded in 1983) closed in 2019. Increased globalisation and competition from countries with cheaper labour saw a decline in production, resulting in the closure of Macquarie Textiles in 2013 [127], while the DSI automotive transmission plant (founded as Borg-Warner in 1970 facilitated by industry incentives) [128] was closed in 2014 when its Chinese owners repatriated the IP [129].
While the economic impact on the communities forced the realisation that Albury and Wodonga should collaborate rather than compete, parochialism and individualism abounded. Even though the two councils made a number of attempts at collaboration, as documented in various Memoranda of Understanding between 1998 and 2017 [130][131][132], the real drivers for integration were the State governments who had the power to overcome the vast range of border anomalies [126]. While the 2001 push by the State govern-  Table 2). In the 1990s and early 2000s, the desire for an affordable lifestyle and rural accommodation saw the growth of dormitory towns that ring Albury-Wodonga: Chiltern, Howlong, Gerogery and Jindera in New South Wales and Barnawartha, Beechworth, Bellbridge, Bethanga, Tallangatta and Yackandandah in Victorias, with Rutherglen (Vic) and Corowa (NSW) a bit further afield (Figure 1) [136].
The effects of this integration are well reflected in the relative proportion of the resident population. While the population of both communities increased continually (Table 2), centralised planning caused the population imbalance to gradually even out: in 1971 the population of Wodonga was 37% of that of Albury, while in 2021 it was at 77.4% (Figure 3). Both Albury and Wodonga have become communities with a high level of intercensal migration primarily to and from other locations in Australia (Table 3). This has increased significantly since the mid-1970s. Compared to the overall population growth of the two communities, the growth of the permanent, non-migrating population has been much slower. Inter-community relocation of a primary residence between Albury and Wodonga is very small (2.3-3.1% of the non-migrating population), with an intercensal net gain for Wodonga of between 20 and 30 persons per year (Table 4, Figure 4). Today, Albury and Wodonga are a community with shared facilities and economy with large  (Table 5). Including the adjacent communities, the total of the cross-border movement now involves about a quarter of the workforce. This figure does not include high school and university students who may reside in one town and study in the other, nor does it include casual border crossings, for example, to access medical facilities.     Table 3 for data.

Effects of Border Closures during the COVID-19 Epidemic
While the extensive level of cross-border integration of facilities and services, as well as cross-border commuting, fulfilled the political aims of the two states, it became a liability with the emergence of the COVID-19 pandemic. Following a series of increasingly restrictive measures, NSW and Victoria went into a stage 3 lockdown on 31 March 2020 which lasted until mid-May 2020 [137][138][139][140][141][142]. That lockdown did not reveal the issues as both communities were equally affected. Following the escape of COVID-19 from Melbourne hotels housing overseas returnees in quarantine in late June 2020, and seeding in the community, the NSW state government unilaterally declared that the state border between NSW and Victoria be closed on 8 July 2020 [143]. Suddenly, almost a quarter of the workforce could no longer reach their place of work. This impact was compounded by the inability to shop across the border, which disproportionately affected Albury as the town has a greater range of specialty shops. Some smaller dormitory communities, such as Bellbridge and Bethanga (Figure 1), for example, are located in Victoria, but for all their goods and services, including fuel, rely on unfettered access to either Albury or Wodonga. With the firm border closures in place, the trip to Wodonga required a 59 km detour, extending the travel time by 50 min.
Not surprisingly, the practicalities of enforcing the original Border Control Order [143] and the implications of that enforcement on the communities brought about a flurry of modifications, primarily in the form of limited exemptions and adjustments (Table 6). Administratively, the decision-makers were not prepared for such an eventuality and thus were forced frequently to adjust their approach on an ad-hoc basis. A week after the full  Table 3 for data.

Effects of Border Closures during the COVID-19 Epidemic
While the extensive level of cross-border integration of facilities and services, as well as cross-border commuting, fulfilled the political aims of the two states, it became a liability with the emergence of the COVID-19 pandemic. Following a series of increasingly restrictive measures, NSW and Victoria went into a stage 3 lockdown on 31 March 2020 which lasted until mid-May 2020 [137][138][139][140][141][142]. That lockdown did not reveal the issues as both communities were equally affected. Following the escape of COVID-19 from Melbourne hotels housing overseas returnees in quarantine in late June 2020, and seeding in the community, the NSW state government unilaterally declared that the state border between NSW and Victoria be closed on 8 July 2020 [143]. Suddenly, almost a quarter of the workforce could no longer reach their place of work. This impact was compounded by the inability to shop across the border, which disproportionately affected Albury as the town has a greater range of specialty shops. Some smaller dormitory communities, such as Bellbridge and Bethanga (Figure 1), for example, are located in Victoria, but for all their goods and services, including fuel, rely on unfettered access to either Albury or Wodonga. With the firm border closures in place, the trip to Wodonga required a 59 km detour, extending the travel time by 50 min.
Not surprisingly, the practicalities of enforcing the original Border Control Order [143] and the implications of that enforcement on the communities brought about a flurry of modifications, primarily in the form of limited exemptions and adjustments (Table 6). Administratively, the decision-makers were not prepared for such an eventuality and thus were forced frequently to adjust their approach on an ad-hoc basis. A week after the full closure, once the urgent demand for limited cross-border traffic became evident, a generic, not mapped-out border zone was established to allow cross-border communities to function, with cross-border traffic permitted on a demonstrable needs basis [143]. Given the rising number of cases in Melbourne and seeding of SARS-CoV2 into regional Victoria, NSW reacted and stipulated a very narrow border corridor on 20 July 2020 ( Figure 5) [144], which, not surpassingly, resulted in severe restrictions on cross-border movements in Albury-Wodonga. These rapidly changing conditions brought about confusion among the border communities, coupled with a growing sense of frustration and resentment at the seemingly arbitrary boundaries [145].
Land 2021, 10, x FOR PEER REVIEW 14 of 28 closure, once the urgent demand for limited cross-border traffic became evident, a generic, not mapped-out border zone was established to allow cross-border communities to function, with cross-border traffic permitted on a demonstrable needs basis [143]. Given the rising number of cases in Melbourne and seeding of SARS-CoV2 into regional Victoria, NSW reacted and stipulated a very narrow border corridor on 20 July 2020 ( Figure 5) [144], which, not surpassingly, resulted in severe restrictions on cross-border movements in Albury-Wodonga. These rapidly changing conditions brought about confusion among the border communities, coupled with a growing sense of frustration and resentment at the seemingly arbitrary boundaries [145].    The boundaries were adjusted on 28 July to add communities adjacent to central Wodonga, which had a high number of residents working in Albury ( Figure 6) [146]. While the new boundaries benefitted the majority of Albury-Wodonga residents, they did little to alleviate the plight of some farmers who owned land on either side of the river, some of which was just outside the bubble. It also affected agricultural workers, such as grain and hay harvesting contractors owning high-capital, specialized machinery and who worked on a regional or catchment basis with little if any regard to state boundaries.
Following the failure of ringfencing Melbourne and environs, as well as a display of selfishness by some residents blatantly flaunting the movement restrictions [165], Victoria moved on 2 August to declare a state-wide stage 3 locked down [166] and stage 4 (with curfew) for Melbourne [167]. While the border zone boundaries did not change at that stage, New South Wales restricted the nature of cross-border access [151]. Once the Victorian cases decreased again, NSW agreed (effective 4 September 2020) to a new and much wider cross-border zone which took into account the need for movement of agricultural workers and contractors (Figure 7) [168]. The border zone boundaries were adjusted on 15 October 2020, expanding the zone to the Alpine areas ( Figure 8). The enforcement of the crossborder movement restrictions relied on permits that needed to be verified individually at roadblocks (Figure 9), with reports of persons trying to be smuggled through the control points [169,170]. Once the Melbourne outbreak had been suppressed, the border controls were lifted on 23 November 2020 [164].      [172].
When Sydney detected an outbreak in its Northern Beaches area on 16 December 2020 and the cluster grew in subsequent days, the Victorian government began to exclude visitors from designated "red" zones [173] and subsequently closed the border with NSW altogether on 1 January 2021 [174]. In this case, however, the Victorian government established a "bubble" for the border communities that was more generously zoned and was based on LGA boundaries ( Figure 10). While the Victorian government issued a flurry of modifications to the border crossing regulations (Table 7), these did not affect the shape of the bubble. A range of temporary structures was erected accompanied by traffic controls and signage (Figures 11 and 12) [175]. The stringent roadblocks were removed on 29 January 2021 and replaced by mobile random checks [176] to detect individuals coming from restricted areas. When Sydney detected an outbreak in its Northern Beaches area on 16 December 2020 and the cluster grew in subsequent days, the Victorian government began to exclude visitors from designated "red" zones [173] and subsequently closed the border with NSW altogether on 1 January 2021 [174]. In this case, however, the Victorian government established a "bubble" for the border communities that was more generously zoned and was based on LGA boundaries ( Figure 10). While the Victorian government issued a flurry of modifications to the border crossing regulations (Table 7), these did not affect the shape of the bubble. A range of temporary structures was erected accompanied by traffic controls and signage (Figures 11 and 12) [175]. The stringent roadblocks were removed on 29 January 2021 and replaced by mobile random checks [176] to detect individuals coming from restricted areas.          Following the escape of a more infectious strain of COVID-19 from Melbourne hotels housing overseas returnees in early February 2021, the Victorian government imposed a five-day stage 4 lockdown on 12 February 2021 [189,190]. Whereas previous restrictions in the border region either applied on both sides (March-May 2020) or prevented out-ofzone travel, the stage 4 lockdown meant that Victorian citizens (unless essential workers) could only leave their home for a narrow set of reasons and then only within a 5 km radius [189]. Unlike the previous border closures, this lockdown had direct implications on Victorian residents unable to travel to their places of work in Albury, with Albury employers impacted to varying degrees, such as those at Albury High School [191,192]. Additionally, Albury residents working and students studying in Wodonga faced the situation that their places of work and study were closed.

Conclusions and Implications
The COVID-19 pandemic and the associated public health measures including border closures and associated controls, effectively cut or impacted cross-border travels between Albury and Wodonga from 31 March to mid-May 2020, from 8 July until 22 November 2020 (initiated by NSW), between 1 and 29 January 2021 (initiated by Victoria) and between 12 and 17 February 2021 (also initiated by Victoria). These were the first full closures since the influenza epidemic 100 years earlier.
Yet unlike 1918/19, when the border closures affected only a small number of people living on and working on the other side of the border, the 2020/21 pandemic has impacted integrated cross-border communities causing significant social disruption and considerable economic cost. Self-employed rural contractors, paying off loans on capital-intensive specialised machinery, were cut off from their clients, while at the same time primary producers were left without the harvesters they had hired and had relied on.
While economic relief measures, such as job keeper, allow offsetting some of the economic costs, the disruption of the social fabric is considerable. With the close integration of the public health system, for example, border closures and state-based lockdown directives have a measurable impact on the ability of relatives to attend obstetrics events and relatives to visit patients in the oncology facilities. Clearly, the spatial confinement of the spread of a disease through ring-fencing or state-wide travel restrictions is a valid, logical and inherently adaptable concept in the toolkit of public health responses to a pandemic [20,21]. The use of border closures to prevent interstate travel, especially when wielded by metropolitan-focussed decision-makers, is a blunt tool that causes disproportionate disruptions in cross-border communities on a trajectory of social and economic integration.
By and large, metropolitan-centred decision-making in both Victoria and New South Wales has a history of treating the respective border regions as a geographically and politically peripheral space which consequently saw little investment and development, unless it directly benefitted metropolitan interests. Closing the state border, coupled with the arbitrary delineation of the border zone by New South Wales during the early period of the border closure in July 2020 is a case in point [144]. While the border zone was well intentioned, it was bereft of an understanding of the realities on the ground. Another example is the arbitrary definition of a 5 km movement radius by the Victorian government [189], which makes some sense in densely populated metropolitan Melbourne, but less so in rural Victoria where population densities are lower and travel distances to essential services are longer [193].
While Australia has, at the time of writing, avoided a large-scale COVID-19 pandemic within its borders, multiple seeding events have occurred that could be contained. Some of these required the closures of borders, others did not. While the current temporary border closure regimes can be reinstated at short notice, there is a need to develop more nuanced containment regimes, if not for a re-emergence of the COVID-19 pandemic, then for future events.
As the vaccines are being administered to contain COVID-19, attention is moving to consider the future make-up of studying [194], working [195], living [196] and commuting [197]. There is the risk that hard border closures are interpreted as a success without reflection. Given the nature of communicable diseases, coupled with the high mobility of the 21st-century society, border closures based on physio-graphic features such as rivers are a blunt policy tool that, while easily administrable, causes significant social and economic harm. Moreover, they are no more secure and foolproof than other methods of ring-fencing. Human nature is such that there will be individuals who will place their personal economic and social interests over the well-being of the wider community. History has shown that hard borders are only as effective as the ability, and the political will, to enforce these. Hard interstate borders between News South Wales and Victoria proved ineffective during the 1919 influenza pandemic because there was a sufficient number of people determined to bypass checkpoints. There were sufficient indications during the COVID-19 pandemic that individuals were prepared to do the same, including hiding in the trunk of a car.
For any containment measure to be successful, it requires a "buy-in" by the general community. While solutions for an adaptive system of containment can avoid generic and broad-brush epidemiological control measures [22], it is a question of political will whether such ideas will come to fruition. Given that other zoonotic coronaviruses akin to SARS-CoV-2 are currently in existence in various host species [198], it is inevitable that some of these coronaviruses will emerge as yet another major threat to humans [199].
One of the lessons of the 2020/21 pandemic will be to either re-evaluate the wisdom of a close social and economic integration of border communities, which would be a backwards step, or to future-proof these communities by developing strategies, effectively public health management plans, to avoid a repeat if and when the next pandemic strikes.