Ontario: Whooping cough cases happening much more frequently than previously known

New research from Public Health Ontario(PHO) and the Institute for Clinical Evaluative Sciences (ICES) suggests that whooping cough cases in Ontario are happening much more frequently than previously known, reinforcing the importance of up-to-date vaccinations to protect against illness and the spread of disease. Whooping cough (formally known as pertussis) is a highly contagious respiratory tract infection. In many people, ["]

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