Measles cases surge in Ontario, with nearly 200 cases in past two weeks

Nearly 200 cases of measles have been reported in Ontario in the past two weeks alone, more than in the entire decade between 2013 and 2023, as a major multi-jurisdictional outbreak balloons in Southwestern Ontario.Most of the cases have been identified in unvaccinated children in the Grand Erie and Southwestern public health units, which cover neighbouring regions that hug the shore of Lake Erie, south of London.However, a new surveillance report from Public Health Ontario, released Thursday, shows measles is also spreading well beyond the epicentre of the outbreak. Seven additional health units have identified cases of the measles since Feb. 27, when PHO last published an update on an outbreak that began last October when an infected traveller brought the virus to Ontario from New Brunswick.