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Avian Influenza: An Update for Veterinarians

Highly pathogenic avian influenza (HPAI) is an extremely contagious disease of birds. It often causes death in poultry. The HPAI outbreak that started in 2022 continues to impact many areas of the United States.

WHAT KINDS OF BIRDS ARE AT RISK? HPAI is highly contagious and often fatal in poultry, including chickens, turkeys, pheasants, quail, ducks, geese, and guinea fowl. It can be carried by free flying migratory waterfowl, such as ducks, geese, and shorebirds.

DOES HPAI INFECT PEOPLE? According to the U.S. Centers for Disease Control and Prevention (CDC), the current avian influenza strain does not present an immediate public health concern; however, there is always the potential of viral mutation. Poultry meat and products are safe when following CDC food preparation guidelines.

HOW IS IT SPREAD? In many previous outbreaks, HPAI was largely confined to and spread among commercial poultry. In this outbreak, the disease is most frequently introduced to new areas by migratory waterfowl. People can spread HPAI by moving infected birds or contaminated equipment and feed. People can also spread HPAI on clothing and vehicles. Because of their exposure to wild birds, small backyard and pet poultry flocks are very susceptible to HPAI.

WHAT DOES HPAI LOOK LIKE IN BIRDS? Signs of HPAI include sudden death, respiratory distress (nasal discharge, coughing, sneezing), lack of energy or appetite, decreased water consumption, decreased egg production or soft-shelled or misshapen eggs.

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ASF Spread and Control Insights - Dr. Carles Vilalta

Video: ASF Spread and Control Insights - Dr. Carles Vilalta


In this episode of The Swine it Podcast Show Canada, Dr. Carles Vilalta, epidemiologist at IRTA CReSA in Spain, explains the current African swine fever situation, including origin, transmission, and control strategies. He highlights the role of human activity, wild boar dynamics, and biosecurity measures to protect commercial farms. Learn how surveillance and field actions shape disease containment. Listen now on all major platforms!

"ASF demonstrates slow animal to animal transmission despite high infectivity, making it a clumsy disease that depends heavily on human mediated spread."

Meet the guest: Dr. Carles Vilalta / carlesvilalta is an epidemiologist, swine veterinarian, and researcher at IRTA-CReSA in Spain. His work focuses on epidemiology, swine health, disease surveillance, and research support for government and industry programs. Learn more from Dr. Carles Vilalta on The Swine it Podcast Show Canada, available on all major platforms.