Public health officials throughout the United States and Canada are warning residents of new measles cases.

ABC News reports that there have now been 14 confirmed measles cases among Los Angeles County residents this year, as well as eight non-resident measles patients who traveled through the county.

According to a statement from the Los Angeles County Department of Public Health, most of the cases were unvaccinated.

Public health officials are urging residents, especially those who travel internationally and those who have not been fully protected against measles, to get the measles immunization in order to better protect their health and to prevent the spread of measles to others.

In the Montreal region, a fourth person has been diagnosed with measles and a restaurant on Décarie Boulevard has been added to the list of locations where people could have contracted the disease, Quebec’s health ministry said Monday.

Meanwhile, Ohio’s first measles case of 2019 has been confirmed in Stark County.

Those who might have been exposed are urged to look out for symptoms, which include a rash, high fever, runny nose, cough, loss of appetite and red, watery eyes. The rash usually lasts 5-6 days and begins at the hairline, moves to the face and upper neck, and proceeds down the body. Diarrhea and ear infections are common complications of measles. More severe complications may also occur, reports Fox News.

Exposure periods are determined based on the time a contagious person spent at the location, with an extra hour added to take into account any virus that stays in the air, according to CBC.