Plague
Plague is a disease caused by the bacteria Yersinia pestis. The disease can be transmitted to humans by fleas that have also bitten an infected animal. Plague can also transmit to humans through direct contact with an infected animal or their fluids or contact with a person with pneumonic plague. Plague is rare in Ontario, with cases acquiring their infection via travel outside of Ontario. Symptoms include fever, headache, chills and abdominal pain. Antibiotics are used to treat plague.
PHO Rounds: Respiratory Season 2026–27, Part 1: Surveillance and Testing of Respiratory Pathogens in Ontario
The first session will provide an overview of current epidemiological trends for COVID-19, influenza, and respiratory syncytial virus (RSV) activity in Ontario, Canada and internationally. The session also describes the planned approach to testing across the provincial laboratory network for respiratory viruses for the 2026–27 season.
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