26 The Trusted Source for Canada’s Pork Producers Better Pork | August 2024 SWINE HEALTH ONTARIO The March 2024 confirmation of highly pathogenic avian influenza (HPAI) in U.S. dairy cattle serves as a reminder that any species is susceptible to influenza viruses – including hogs and humans – and how easily the virus can spread. Protecting Ontario’s pork industry against highly contagious influenza viruses is essential to maintain the health of our animals, families and employees, and the industry. Influenza in livestock Avian influenza is a contagious viral infection that mainly affects birds but can sometimes infect humans and other mammals. There are many types of avian influenza, which are all caused by various strains of type A influenza virus (e.g., H5N1, H7N3, H9N2). Avian influenza A (H5N1) illness is caused by the avian influenza A (H5N1) virus. Avian influenza is carried by migratory birds, making spring and fall high-risk seasons for virus transmission. As of June 5, 2024, there have been no detections of H5N1 in hogs, cattle, or other livestock species in Ontario or Canada. Ontario’s hog industry is vigilant about monitoring the presence of influenza viruses. Routine testing has confirmed the detection of three strains of influenza within provincial herds, including H1N1, H1N2, and H3N2. What’s different about H5N1? “H5N1, or HPAI, is a specific subtype of the influenza virus that is a serious concern for all poultry and livestock producers,” says Dr. Christa Arsenault, lead veterinarian in the Animal Health & Welfare Department for the Ontario Ministry of Agriculture, Food and Agribusiness. She also explains that if the virus spreads to infect a new type of host, like hogs, it can be very effective at PREVENTING H5N1 INTRODUCTION TO PIGS Pork producers encouraged to take a proactive approach. By Jeanine Moyer Designated clothing and footwear worn in hog barns is a common and effective biosecurity protocol. Jodie Aldred photo
RkJQdWJsaXNoZXIy NTc0MDI3