| investigations on outbreaks of african horse sickness in the surveillance zone in south africa. | confirmed outbreaks of african horse sickness (ahs) occurred in the surveillance zone of the western cape in 1999 and 2004, both of which led to a two-year suspension on the export of horses. light trap surveys in the outbreak areas showed that known vector competent culicoides species, notably c. imicola, were abundant and present in numbers equal to those in the traditional ahs endemic areas. isolations of ahs virus serotypes 1 and 7, equine encephalosis virus, and bluetongue virus from field- ... | 2006 | 17361773 |
| an epidemiological investigation of the african horsesickness outbreak in the western cape province of south africa in 2004 and its relevance to the current equine export protocol. | african horsesickness (ahs) is a controlled disease in south africa. the country is divided into an infected area and a control area. an outbreak of ahs in the control area can result in a ban of exports for at least 2 years. a retrospective epidemiological study was carried out on data collected during the 2004 ahs outbreak in the surveillance zone of the ahs control area in the western cape province. the objective of this study was to describe the 2004 outbreak and compare it with the 1999 ahs ... | 2006 | 17458343 |
| culicoides species associated with livestock in the stellenbosch area of the western cape province, republic of south africa (diptera: ceratopogonidae). | a total of 33,564 culicoides midges was collected in 44 light trap collections made at 22 sites in the stellenbosch area during november 1986. of the 23 species present in these collections 8 were frequently encountered namely, c. magnus, c. imicola, culicoides sp. 49, c. zuluensis, c. gulbenkiani, c. pycnostictus, c. distinctipennis and c. nivosus. although c. magnus was abundant at all trap sites, the prevalence of the other species appeared to be affected by the proximity of the light trap to ... | 1988 | 3393370 |