- Watch for symptoms of measles until May 23. If you develop sign and symptoms, you are advised to seek health care as soon as possible.

- Check your immunization record to make sure you and your family members are up-to-date with the measles vaccination (MMR or MMRV). If you are unsure, check with your doctor, and get doses you may be eligible for.

"Symptoms of measles can include high fever, cough, runny nose, sore eyes or sensitivity to light, small spots in the mouth or throat and a red rash on the face or body," Dr. Karim Kurji, York Region’s medical officer of health, said.

"Anyone showing symptoms of measles is advised to seek health care as soon as possible and should call the health care provider/facility in advance of visiting to advise the provider/facility of their possible exposure to the measles virus. It is important to identify measles early to help prevent its spread to other people."

For more information, visit york.ca/health or contact York Region Public Health’s measles information line at 1-877-464-9675, ext.77280.