As cases rise across the country, public health officials in northwestern Ontario are closely watching the spread of measles in the province.

On Thursday afternoon, the Northwestern Health Unit (NWHU) issued an alert about a risk of measles exposure at Toronto Pearson Airport on March 2 at Terminal 1, between 4:50 p.m. and 7:40 p.m.

"Anyone who was at the following location between the times listed is considered exposed to measles," the NWHU said.

People are urged to monitor for symptoms until Mar…