EXPERIMENTAL STUDIES IN WEANED PIGS WITH 3 VACCINES AGAINST AUJESZKYS DISEASE

Groups of pigs were vaccinated with two attenuated and one inactivated vaccine and then challenged 2 weeks later by intranasal inoculation of a virulent strain of Aujeszky's disease virus. Mortality rates varied from none in the group vaccinated with attenuated vaccine to 11% in the group given inactivated vaccine and 94% in the controls. No vaccine prevented the development of clinical illness or excretion of virulent virus. However all vaccines reduced the number of days of which virus was excreted. Three weeks after challenge all 3 groups had recovered and there was no significant difference in mean weights. © 1979.