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Pathogen DNA was isolated from roan antelope (Hippotragus equinus), sable antelope (Hippotragus niger), greater kudu (Tragelaphus strepsiceros), and common gray duiker (Sylvicapra grimmia) in South Africa whose deaths were attributed to either theileriosis or cytauxzoonosis. We developed Theileria species-specific probes used in combination with reverse(More)
A survey on the incidence of antibodies toBabesia bigemina andBabesia bovis in one to three year old calves at 274 localities in Zimbabwe revealed thatB. bigemina occurred throughout the country together with its main vector,Boophilus decoloratus. The distribution ofB. bovis followed closely that of its vectorBoophilus microplus which is limited to the(More)
Rhipicephalus zambeziensis was shown experimentally to transmitTheileria parva parva in cattle from nymph to adult andTheileria parva lawrencei, Theileria parva bovis andTheileria taurotragi from larva to nymph and nymph to adult. In a single trial the tick failed to transmitTheileria mutans. The tick is believed to be a vector ofT. parva lawrencei in the(More)
The disruption of veterinary services in the tribal areas of Rhodesia (now Zimbabwe) during seven years of conflict resulted in serious epidemics of disease. The cessation of dipping was followed by the death of an estimated one million cattle from tick-borne disease. Heavy mortality followed the disruption of control measures for trypanosomiasis.(More)
Three African buffalo (Syncerus caffer) that died after capture and translocation from Mutirikwe Recreational Park in southern Zimbabwe showed macroscopic and microscopic lesions of cardiomyopathy compatible with a diagnosis of gousiekte. The buffalo had had access to Pavetta schumanniana, a plant that is known to cause gousiekte. Death was attributed to(More)
Records of 283 outbreaks of East Coast fever in Zimbabwe in the period 1914 to 1946 reveal that transmission of infection occurred throughout the year with peaks in January to March and May to July. The high level of transmission in January to March coincides with the known seasonal occurrence of adultRhipicephalus appendiculatus. It is suggested that(More)
In an outbreak of Babesia bovis in a large herd of Friesian x Malawi Zebu cattle, which occurred after an interruption of intensive dipping, clinical or fatal babesiosis occurred in 54/299 (18.1%) animals which had never been vaccinated, as compared to 9/153 (5.9%) vaccinated animals. Eight of the nine affected vaccinates had been vaccinated more than 27(More)
The protozoan parasite Theileria parva, transmitted by the ixodid tick Rhipicephalus appendiculatus, is the cause of East Coast fever (ECF) and the related syndromes of Corridor disease and January disease in cattle of eastern, central and southern Africa. It is likely that buffalo (syncerus caffer) are the natural host of T. parva. In eastern and southern(More)
It is currently thought that the following species or sub-species of Theileria occur in cattle in southern Africa: Theileria parva parva (East Coast fever), Theileria parva lawrencei (Corridor disease), Theileria parva bovie (Rhodesian theileriosis), Theileria mutans proper (transmitted by Amblyomma species), so-called Theileria mutans (a non-pathogenic(More)
A field study was conducted in the Southern Region of Malawi to evaluate the possible benefits of immunisation of improved dairy cattle againstAnaplasma marginale, Babesia bigemina andBabesia bovis. Friesian crossbred heifers were immunised when they were being reared on Government farms. They were then issued to smallholder farmers, together with(More)