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The new virus A4486 (Colombia 1967), isolated during breakdowns of immunity in vaccinated cattle, was compared with A4005 (A Colombia 1963) and A1433 (A Colombia 1957) by c.f. tests, cross-immunity tests in g.pigs and serum-protection tests in unweaned mice. The new virus showed practically no...

Turriago, G.; Lobo A. C. A.; Jaramiilo, M.; Morales, A.
Office International des Epizooties, Paris, France
Bulletin de l'Office International des Epizooties, 1969, 71, pp 1155-1167