COMPARISONS OF SEROTESTS WITH CALF INOCULATIONS FOR DETECTION OF CARRIERS IN ANAPLASMOSIS-VACCINATED CATTLE

  • 1 January 1980
    • journal article
    • research article
    • Vol. 41  (12) , 2085-2086
Abstract
Fifteen months after discontinuing vaccination for anaplasmosis in a herd of 131 cattle, 126 of the animals were reactive to the complement-fixation or card-agglutination tests. Inoculation of splenectomized calves proved that 9 animals were carriers and 117 animals were free of anaplasmosis. Anaplasmosis vaccination induced titers detectable by the standard serotests that persisted for at least 15 mo.