Immunological studies on Dictyocaulus viviparus infection: the immunity resulting from experimental infection.

  • 1 July 1959
    • journal article
    • Vol. 2  (3) , 252-61
Abstract
It has been shown experimentally that infection of calves with D. viviparus confers a high degree of resistance to a subsequent reinfection. This acquired immunity can result from a single infection with a sub-lethal dose of larvae or from a series of repeated doses of small numbers of larvae. Animals immunized by a previous infection exhibit on challenge a rapid antibody response and a striking reduction (in some cases to zero) in the numbers of worms reaching the lungs, and in the numbers of larvae appearing in the faeces.