Chancroid
Chancroid is a sexually transmitted bacterial infection caused by Haemophilus ducreyi. It is rare in Ontario. Symptoms can include painful genital ulcers and painful and swollen regional lymph nodes. Symptoms appear up to two weeks after exposure. Having chancroid can increase the risk of HIV spread. Chancroid can be prevented through safer sex practices and treated with antibiotics.
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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