Protective role of maternal antibodies against Haemophilus parasuis infection.

OBJECTIVE To evaluate the impact of maternal antibodies after challenge exposure of baby pigs with a homologous serovar of Haemophilus parasuis. ANIMALS 7 gilts and their litters from a high health status farm. PROCEDURE Gilts were vaccinated twice with a commercial bacterin that contained H parasuis serovar 4 and 5 or, as a control, adjuvant only. A… CONTINUE READING