Measles: Ontario, with massive outbreak, has become the epicenter of the Western Hemisphere

A massive outbreak has made Ontario the measles epicentre of the western hemisphere Three-quarters of cases are in unvaccinated children, and this week saw the first fatality: a premature baby The Guardian

Since October, the province has reported a staggering 2,009 cases of measles associated with the current outbreak – more than all of those in the United States combined in 2025, and making Ontario the measles epicentre of the western hemisphere.

Cases have been climbing by the hundreds over the last month, and three-quarters of cases are in unvaccinated children, according to Public Health Ontario.

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