Transmission of Anaplasma marginale from a naturally-infected wild African giant rat (Cricetomys gambianus, Waterhouse) to a calf in Nigeria.
1981
Dipeolu O.O. | Akinboade O.A.
Blood taken from an African giant rat in Nigeria, transmitted Anaplasma marginale when inoculated into a splenectomised calf. The infection of the calf was sub-clinical and the highest percentage of infected erythrocytes recorded was 6. Anaplasma marginale was first observed in the calf's blood three days after inoculation, but the parasite disappeared suddenly, nine days after inoculation. This is the first experimental demonstration of A. marginale infection in African giant rats in Nigeria, a country where anaplasmosis is endemic in the cattle population. The significance of giant rats being a reservoir host of A. marginale in Nigeria is discussed.
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