Thousands of people, mostly children, in the U.S., Canada, and Mexico have contracted the vaccine-preventable disease this year.

Ontario's Ministry of Health has announced the first recorded death of a measles patient from the outbreak that started in October. The baby who died contracted the virus before birth from the mother,

An infant infected with measles has died in southwestern Ontario, Canada, the province's chief medical officer of health said in a statement on Thursday. "An infant, born prematurely and infected with measles,