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 with measles has died in Ontario, marking the first measles-related death in an outbreak that has now spread to more than 2,000 people. The baby contracted measles from their unvaccinated mother while in the womb, Ontario’s Chief Medical Officer of Health Dr. Kieran Moore said in a statement Thursday.