Abstract
Trials on a lyophilised vaccine prepared fromM. mycoides var.mycoides strain T1, were carried out on humpless N'dama and Baoule cattle and on zebu cattle. Post-vaccinal complications in some animals made the vaccine unsuitable under prevailing conditions for widespread field use on the humpless cattle in Ivory Coast. However the post-vaccinal lesions can be controlled and the proven immunological effectiveness of this lyophilised product have convinced the author that its use should be gradually extended as staff training and improved facilities permit. The product was acceptable for field vaccination of the zebu herds. The number and extent of local lesions were much reduced in herds revaccinated after one year. Serological findings based on the complement fixation test are discussed.
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