Malignant Catarrhal Fever In East Africa ilL-Neutralizing Antibody in Free-living Wildebeest

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1967
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Serum samples from 181 East African wildebeest were inactivated at 56°C. for 30 min. and examined for neutralizing activity against the virus of malignant catarrhal fever (MCF or snotsiekte). All animals over the age of 7 months were serologically positive and the mean SN 50 titre for those aged 3 years or more was 10-1 •70 • Half of I2 calves in the birth to 4 weeks age group possessed high-titre antibody, presumably acquired from the colostrum of their dam. The other 6 had no antibody, although their mother's serum contained the usual quantities; the normal transmission of rinderpest antibodies, from dam to offspring, also did not occur in these instances. No explanation was found for the failure,which was probably limited to animals in this age group
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East African Agricultural And Forestry Journal, 8 (1), p. 129-136
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