Page 192 of articles about health
Netherlands: national zoonosis research facility opens in Lelystad

Pathogenesis of Influenza A virus infection in swine
A perfect antigenic match is ideal because it will result in little to no virus replication/damage, shedding or clinical signs. However, if the virus is similar enough to have cross-reaction, the infection can be reduced to as few as 2-4 days.
Canada: Government invests to strengthen pork sector

Interaction between PRRSV and H. parasuis
PRRSV does not favour infection by H. parasuis by reducing the population of alveolar macrophages, but by reducing their ability to inactivate the bacteria.