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Toronto Flu Cases Surge as Winter Looms

29 Nov, 2025

Summary

Toronto Public Health reports 238 lab-confirmed flu cases as of November 15.
Influenza A, particularly A(H3N2), is the dominant strain in Ontario.
Vaccination is crucial to prevent spread and reduce severe illness this season.

Toronto is experiencing an increase in flu cases as winter approaches, with 238 lab-confirmed infections reported by November 15. Toronto Public Health (TPH) noted rising indicators, including case numbers and positive lab tests, urging residents to take preventative actions.

Public Health Ontario indicates that Influenza A is the predominant strain across the province, with A(H3N2) being more common. While the severity of the upcoming season remains uncertain, officials stress that current activity is increasing, making flu vaccines and other protective measures essential.

TPH recommends eligible residents get their influenza, COVID-19, and RSV vaccines. Vaccines are updated annually to target circulating strains and offer meaningful protection against severe outcomes, even if not a perfect match.

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