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Title: Reappearance of human cases due to Murray Valley encephalitis virus and Kunjin virus in Central Australia after an absence of 26 years
Authors: Brown, Alex;Bolisetty, Srinivas;Whelan, Peter I;Smith, David W;Wheaton, Gavin
subject: Insects;Mosquitoes;Arboviruses;encephalitis;Monitoring;Surveys;Western Australia;Northern Territory;public awareness
Year: 29-Jan-2009
Publisher: The Office of Health Protection in the Australian Government Department of Health and Ageing
Description: Murray Valley encephalitis (MVE) and Kunjin virus disease are endemic in the tropical parts of the Northern Territory and Western Australia, but have been absent from Central Australia since 1974. In 2000, 5 laboratory-confirmed cases of encephalitis occurred over a short period in the normally dry inland region of Central Australia. The sudden occurrence of cases in March and April 2000 followed unusually high rainfall in the preceding months and evidence of flavivirus activity in the endemic areas in the Kimberley region of Western Australia. Further cases were reported in the following wet season, without preceding human cases in known endemic areas. These findings indicate the reintroduction of these viruses into Central Australia and establishment of local cycles of infection with an ongoing risk to the local population. This area may also act as a potential source for reintroduction of MVE into south-eastern Australia.
Standard no: 0725-3141
Health Protection Division
Appears in Collections:Open Access Collection

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