Thanks to continuing surveillance, the H1N1 influenza virus has been found in several herds in the Canadian province of Manitoba. The infection has been found in sow barns, nursery barns, and feeder barns located in various locations in the province. Movement of pigs from these locations was immediately limited to prevent transmission of the virus to other swine herds.
The novel virus was first suspected in a sow barn when sows that had been vaccinated against common strains of influenza began to exhibit influenza-like symptoms. In the herds where the virus has been detected the disease was very mild, with pigs showing only slight signs of respiratory illness. No deaths have been reported in these herds.
Security protocols, including the reminder to staff to wear their personal protective equipment properly, were enhanced to further protect both pigs and the workers in the barns.