Avian Influenza

Avian influenza A (H5N1) was first detected in Canada in 2021 and continues to circulate worldwide with ongoing detections in various bird populations, and in various wild and domestic mammalian species, including dairy cattle.

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About PHO

Public Health Ontario (PHO) keeps Ontarians safe and healthy. With our partners in government, public health and health care, we prevent illness and improve health.

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