As measles cases in the United States continue to mount, neighboring countries Canada and Mexico are also experiencing significant outbreaks – all of which have been linked to at least one death.

A baby born prematurely to an unvaccinated mother has become the first measles patient to die in a measles outbreak that started in Canada last year. The infant died in Ontario, where nearly 2,000 cases have been reported,

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.