Identified the African swine fever enzootic area in Malawi and noted differing mortality rates inside versus outside this region.
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Mortality patterns may inform targeted ASF control in Malawi; leaves open mechanisms behind regional lethality differences.
A serological survey of free-ranging domestic pigs in the Central and Southern Regions of Malawi, together with laboratory data on confirmed cases of African swine fever (ASF) and data from interviews with pig owners, undertaken over a four-year period from 1981-4, has enabled the ASF enzootic area of Malawi to be identified. The area covers much of the western part of the Central Region and includes Mchinji district and parts of Kasungu, Ntchisi, Dowa and Lilongwe districts. Mortality is substantially less than 100% in outbreaks within the enzootic area but approaches 100% in outbreaks outside this area, as shown by both the serological investigation and the interview data.
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Haresnape et al. (1985) studied this question.
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