Chief Medical Officer Raises Alarm Over Measles Outbreaks in Ontario, Quebec

This undated image made available by the Centers for Disease Control and Prevention on Feb. 4, 2015, shows an electron microscope image of a measles virus particle, center. The Canadian Press/AP-Cynthia Goldsmith/Centers for Disease Control and Prevention via AP

Canada’s top health official is expressing concern about the rise in measles outbreaks in the country, with a growing number of cases cropping up in Ontario and Quebec.

International travel was the initial source of the outbreaks, but all the recent measles infections resulted from exposure to the virus in Canada, Chief Public Health Officer Dr. Theresa Tam said in a Jan. 29 statement.