Estimation of fimbrial vaccine effectiveness in protection against keratoconjunctivitis infectiosa in calves considering different routes of introducing vaccine antigene.

Infectious Bovine Keratoconjunctivitis (IBK) is one of diseases of a very complex etiology constituting a serious epizootiologic and economic problem in cattle raising on a large scale. The primary and most pathogenic etiological factor is Gram negative Moraxella bovis bacteria. The present work was undertaken to compare the efficiency of different systems of vaccination and determine their influence on forming the profile of different types of immunity.