An attempt to improve the immunization of sheep against heart-water by using different combinations of 3 stocks of Cowdria ruminantium.
Neither sheep immune to the Ball 3, the Kwanyanga or the Mara stocks of Cowdria ruminantium nor those immunized with combinations of these 3 stocks were protected against challenge with the Mali stock. Against challenge with the Welgevonden stock, however, immunization with each of the 3 combinations and with single stocks effected a protective immunity.
du Plessis
J L
JL
Veterinary Research Institute, Onderstepoort.
Potgieter
F T
FT
van Gas
L
L
D000818:Animals; D001428:Bacterial Vaccines / Q000276:immunology*; D003429:Cross Reactions / Q000276:immunology; D006357:Heartwater Disease / Q000276:immunology / Q000517:prevention & control*; D012287:Rickettsiaceae / Q000276:immunology*; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology / Q000517:prevention & control*; D014611:Vaccination / Q000662:veterinary
D001428:Bacterial Vaccines