| an outbreak of african swine fever in the southern region of malawi. | an outbreak of african swine fever (asf) was first detected in december 1989 in the southern region of malawi. during 1990 the outbreak reached epidemic proportions: by august 1990, over 31,000 pigs (45%) from a population of 70,000 in the affected areas had died or been slaughtered. in affected villages this accounted for 83% of the pigs present. the outbreak probably originated in the central region of malawi, where asf is enzootic. virus isolates from the southern and central region outbreaks ... | 1995 | 8593399 |
| a study of african swine fever virus infected ticks (ornithodoros moubata) collected from three villages in the asf enzootic area of malawi following an outbreak of the disease in domestic pigs. | a detailed study was made in 1983-5 in three villages in mchinji district in the african swine fever (asf) enzootic area of malawi, following an outbreak of asf which affected all three villages. ticks of the ornithodoros moubata complex were collected from both pig sties and houses shortly after the outbreak, and approximately 24% contained asf virus. the proportion of ticks infected did not differ significantly in the three villages, or more surprisingly in different types of premises, and was ... | 1989 | 2737257 |
| a four-year survey of african swine fever in malawi. | 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 substa ... | 1985 | 4067292 |
| the distribution of ticks of the ornithodoros moubata complex (ixodoidea: argasidae) in malawi, and its relation to african swine fever epizootiology. | the distribution of ticks of the ornithodoros moubata complex in different habitats in malawi, particularly pigsties and houses, was established from a four-phase survey undertaken between 1982 and 1985. the first phase consisted of preliminary interviews, the second phase consisted of a questionnaire to veterinary assistants (vas) in rural areas, the third involved tick collections by vas and the fourth involved both interviews and tick collections by members of the central veterinary laborator ... | 1986 | 3734435 |
| isolation of african swine fever virus from ticks of the ornithodoros moubata complex (ixodoidea: argasidae) collected within the african swine fever enzootic area of malawi. | ticks of the ornithodoros moubata complex were collected from domestic pig sties and dwelling houses, and from a warthog habitat, and tested for the presence of african swine fever (asf) virus. collections were made in 9 of the 24 districts of malawi, these being primarily the districts in which o. moubata is most numerous. asf virus was isolated from ticks collected in both domestic pig sties and houses in certain villages in mchinji district where asf outbreaks had recently occurred. mchinji d ... | 1988 | 3402546 |
| an updated survey of african swine fever in malawi. | cases of african swine fever (asf) confirmed in the laboratory in 1985 and 1986 and other data obtained since 1984, in particular and extension of the serological survey of free-ranging domestic pigs undertaken from 1981 to 1984, are presented to give an updated survey of the asf situation in malawi and a revised estimate of the asf enzootic area. evidence is presented that the area may include some border areas in dedza and ntcheu districts and may be expanding in some localities. | 1987 | 3322852 |