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Domestic pigs and Japanese encephalitis virus infection, Australia.

van-den-Hurk AF, Ritchie SA, Johansen CA, Mackenzie JS, Smith GA - Emerging Infect. Dis. (2008)

Bottom Line: To determine whether relocating domestic pigs, the amplifying host of Japanese encephalitis virus (JEV), decreased the risk for JEV transmission to humans in northern Australia, we collected mosquitoes for virus detection.Detection of JEV in mosquitoes after pig relocation indicates that pig relocation did not eliminate JEV risk.

View Article: PubMed Central - PubMed

Affiliation: Virology, Forensic and Scientific Services, Queensland Health, Coopers Plains, Queensland, Australia. andrew_hurk@health.qld.gov.au

ABSTRACT
To determine whether relocating domestic pigs, the amplifying host of Japanese encephalitis virus (JEV), decreased the risk for JEV transmission to humans in northern Australia, we collected mosquitoes for virus detection. Detection of JEV in mosquitoes after pig relocation indicates that pig relocation did not eliminate JEV risk.

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Related in: MedlinePlus

Pig housing in Badu Island. A) Typical backyard pig pen in community before removal in 1998 and B) Badu Island piggery, where pigs have been housed since late 1998.
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Figure 1: Pig housing in Badu Island. A) Typical backyard pig pen in community before removal in 1998 and B) Badu Island piggery, where pigs have been housed since late 1998.

Mentions: Since the emergence of JEV in northern Australia in 1995, we (the authors) have investigated the ecology of JEV on Badu Island in the Torres Strait, where most human, pig, and animal infections have occurred. Intense transmission on this island has been linked to domestic pigs, which until late 1998 were housed in small backyard pens (Figure 1, panel A), and high populations of Culex sitiens subgroup mosquitoes (4). In Australia, members of the Cx. sitiens subgroup, from which Cx. annulirostris is considered to be the most important species, are the primary Australian JEV vectors (5). During an outbreak in 1998, the virus was shown to be widespread on Badu Island; isolates were obtained from mosquitoes collected throughout the community (6). A vaccination program initiated on the outer Torres Strait islands in 1995, including Badu Island, appears to have limited the number of human clinical cases (5).


Domestic pigs and Japanese encephalitis virus infection, Australia.

van-den-Hurk AF, Ritchie SA, Johansen CA, Mackenzie JS, Smith GA - Emerging Infect. Dis. (2008)

Pig housing in Badu Island. A) Typical backyard pig pen in community before removal in 1998 and B) Badu Island piggery, where pigs have been housed since late 1998.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2630726&req=5

Figure 1: Pig housing in Badu Island. A) Typical backyard pig pen in community before removal in 1998 and B) Badu Island piggery, where pigs have been housed since late 1998.
Mentions: Since the emergence of JEV in northern Australia in 1995, we (the authors) have investigated the ecology of JEV on Badu Island in the Torres Strait, where most human, pig, and animal infections have occurred. Intense transmission on this island has been linked to domestic pigs, which until late 1998 were housed in small backyard pens (Figure 1, panel A), and high populations of Culex sitiens subgroup mosquitoes (4). In Australia, members of the Cx. sitiens subgroup, from which Cx. annulirostris is considered to be the most important species, are the primary Australian JEV vectors (5). During an outbreak in 1998, the virus was shown to be widespread on Badu Island; isolates were obtained from mosquitoes collected throughout the community (6). A vaccination program initiated on the outer Torres Strait islands in 1995, including Badu Island, appears to have limited the number of human clinical cases (5).

Bottom Line: To determine whether relocating domestic pigs, the amplifying host of Japanese encephalitis virus (JEV), decreased the risk for JEV transmission to humans in northern Australia, we collected mosquitoes for virus detection.Detection of JEV in mosquitoes after pig relocation indicates that pig relocation did not eliminate JEV risk.

View Article: PubMed Central - PubMed

Affiliation: Virology, Forensic and Scientific Services, Queensland Health, Coopers Plains, Queensland, Australia. andrew_hurk@health.qld.gov.au

ABSTRACT
To determine whether relocating domestic pigs, the amplifying host of Japanese encephalitis virus (JEV), decreased the risk for JEV transmission to humans in northern Australia, we collected mosquitoes for virus detection. Detection of JEV in mosquitoes after pig relocation indicates that pig relocation did not eliminate JEV risk.

Show MeSH
Related in: MedlinePlus