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Trop. Med. Infect. Dis. 2018, 3(2), 53; https://doi.org/10.3390/tropicalmed3020053

The Unique Life Cycle of Strongyloides stercoralis and Implications for Public Health Action

1
Miwatj Health Aboriginal Corporation, Nhulunbuy, NT 0881, Australia
2
Public Health and Tropical Medicine, James Cook University, Cairns, QLD 4870, Australia
3
Centre for Indigenous Health Equity Research, School of Health, Medical and Applied Sciences, Central Queensland University, Bundaberg, QLD 4670, Australia
4
School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, QLD 4700, Australia
*
Author to whom correspondence should be addressed.
Received: 27 April 2018 / Revised: 21 May 2018 / Accepted: 21 May 2018 / Published: 25 May 2018
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Abstract

Strongyloides stercoralis has one of the most complex life cycles of the human-infecting nematodes. A common misconception in medical and public health professions is that S. stercoralis in its biology is akin to other intestinal nematodes, such as the hookworms. Despite original evidence provided by medical and veterinary research about this unique helminth, many assumptions have entered the scientific literature. This helminth is set apart from others that commonly affect humans by (a) the internal autoinfective cycle with autoinfective larvae randomly migrating through tissue, parthenogenesis, and the potential for lifelong infection in the host, the profound pathology occurring in hyperinfection and systemic manifestations of strongyloidiasis, and (b) a limited external cycle with a single generation of free-living adults. This paper aims to review and discuss original research on the unique life cycle of S. stercoralis that distinguishes it from other helminths and highlight areas where increased understanding of the parasite’s biology might lead to improved public health prevention and control strategies. View Full-Text
Keywords: Strongyloides stercoralis; strongyloidiasis; life cycle; public health; control; biology Strongyloides stercoralis; strongyloidiasis; life cycle; public health; control; biology
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Page, W.; Judd, J.A.; Bradbury, R.S. The Unique Life Cycle of Strongyloides stercoralis and Implications for Public Health Action. Trop. Med. Infect. Dis. 2018, 3, 53.

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