Inactivated bacterial vaccine.

The product stimulates the development of active immunity against Haemophilus parasuis serotype 5. Serotype 5 is the most prevalent under the virulent serotypes of H. parasuis. There is some cross protection to the other virulent serotypes, but full cross protection cannot be assured. The product stimulates transfer of passive immunity against Haemophilus parasuis serotype 5 and 4 to the progeny after vaccination of pregnant sows. It contains an aqueous adjuvant.