02/02/2015 12:46 EST | Updated 04/04/2015 05:59 EDT

Measles outbreak investigated by Toronto Public Health

Toronto's Public Health department is investigating four lab-confirmed cases of measles involving two children under two years of age and two adults from different families.

A news release says no source case has been identified and there are no known links or contacts between the cases. The release says that while the risk to the general public is low, they recommend that people check to ensure their  vaccinations are up to date.

More than 100 cases of measles have been reported in the U.S. since last month. Many cases have been traced directly or indirectly to Disneyland in California.

Symptoms of measles include a high fever, cold-like symptoms such as a cough or runny nose, sore eyes or sensitivity to light and a red rash lasting four to seven days. 

Infants under one year of age, pregnant women and people with weakened immune systems can get very ill with measles. Those showing symptoms should call their doctor. Do not go to any medical office or facility without telling them before the appointment that you think that you may have measles.