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Open AccessArticle

Risk Assessment of African Swine Fever Virus Exposure to Sus scrofa in Japan Via Pork Products Brought in Air Passengers’ Luggage

1
Research Center for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Japan
2
VISAVET Center and Animal Health Department, University Complutense of Madrid, 28040 Madrid, Spain
3
Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo 001-0020, Japan
*
Author to whom correspondence should be addressed.
Pathogens 2020, 9(4), 302; https://doi.org/10.3390/pathogens9040302
Received: 6 March 2020 / Revised: 18 April 2020 / Accepted: 18 April 2020 / Published: 20 April 2020
(This article belongs to the Special Issue African Swine Fever Virus Infection)
In recent years, African swine fever (ASF) has become prevalent in many areas, including Asia. The repeated detection of the ASF virus (ASFV) genome in pork products brought in air passenger’s luggage (PPAP) was also reported from Japanese airports. In the present study, the risk of ASFV exposure to susceptible hosts in Japan via three different pathways was assessed. Two quantitative stochastic risk assessment models were built to estimate the annual probability of ASFV exposure to domestic pigs, which could be attributed to foreign job trainees or foreign tourists. A semi-quantitative stochastic model was built to assess the risk of ASFV exposure to wild boar caused by foreign tourists. The overall mean annual probability of ASFV exposure to domestic pigs via PPAP carried by foreign job trainees was 0.169 [95% confidence interval (CI): 0.000–0.600], whereas that by foreign tourists was 0.050 [95% CI: 0.000–0.214], corresponding to approximately one introduction every 5.9 and 20 years, respectively. The risk of ASFV exposure to domestic pigs was dispersed over the country, whereas that of wild boar was generally higher in the western part of Japan, indicating that the characteristics of the potential ASF risk in each prefecture were varied. View Full-Text
Keywords: African swine fever; biosecurity; exposure assessment; import risk; risk analysis; wild boar African swine fever; biosecurity; exposure assessment; import risk; risk analysis; wild boar
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Ito, S.; Bosch, J.; Jurado, C.; Sánchez-Vizcaíno, J.M.; Isoda, N. Risk Assessment of African Swine Fever Virus Exposure to Sus scrofa in Japan Via Pork Products Brought in Air Passengers’ Luggage. Pathogens 2020, 9, 302.

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