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Browsing 1998 Onderstepoort Journal of Veterinary Research, Volume 65, 1998 by Subject "Absence of clinical disease outbreaks"
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Tice, G.A.; Bryson, N.R.; Stewart, C.G.; Du Plessis, B.; De Waal, D.T.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
A two-year field study was conducted in four communal grazing areas in South Africa. Sera were
collected from young cattle (6-18 months old) in these areas during the winters of 1991 to 1993. The
sera were tested for ...