Epizootic activity of Murray Valley encephalitis and Kunjin viruses in an aboriginal community in the Southeast Kimberley region of Western Australia: Results of mosquito fauna and virus isolation studies

被引:31
作者
Broom, AK [1 ]
Lindsay, MDA
Wright, AE
Smith, DW
MacKenzie, JS
机构
[1] Univ Western Australia, Dept Microbiol, Arbovirus Surveillance & Res Lab, Nedlands, WA 6009, Australia
[2] Western Australian Dept Hlth, Mosquito Borne Dis Control Branch, Perth, WA, Australia
[3] Queen Elizabeth II Med Ctr, Western Australian Ctr Pathol & Res, Div Hlth Sci, Nedlands, WA, Australia
[4] Univ Queensland, Sch Mol & Microbial Sci, Dept Microbiol & Parasitol, Brisbane, Qld, Australia
关键词
D O I
10.4269/ajtmh.2003.69.277
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
We undertook annual surveys of flavivirus virus activity in the community of Billiluna of Western Australia in the southeast Kimberley region between 1989 and 2001. Culex annulirostris was the dominant mosquito species, particularly in years of above average rains and flooding. Murray Valley encephalitis (MVE) virus was isolated in 8 of the 13 years of the study from seven mosquito species, but more than 90% of the isolates were from Cx. annulirostris. The results suggest that MVE virus is epizootic in the region, with activity only apparent in years with average or above average rainfall and increased numbers of Cx. annulirostris. High levels of MVE virus activity and associated human cases were detected only once (in 1993) during the survey period. Activity of MVE virus could only be partially correlated with wet season rainfall and flooding, suggesting that a number of other factors must also be considered to accurately predict MVE virus activity at such communities.
引用
收藏
页码:277 / 283
页数:7
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