The country hasn't been able to curb an outbreak of more than 5,000 cases over the last year, while US cases are at a 33-year high.

The Pan American Health Organization revoked Canada's measles-free status Monday amid an outbreak that has infected thousands of people.

The country hasn't been able to curb an outbreak of more than 5,000 cases over the last year, while US cases are at a 33-year high.