If you were at a walk-in clinic on Ritson Road in Oshawa or the emergency department at Lakeridge Health in Oshawa recently, you may have been exposed to the measles.

The Durham health department is confirming a case in a local child who was not vaccinated against the viru.s

Health officials are investigating and following up directly with any known contacts who may have been exposed.

The person with measles had recently travelled internationaly.

The public may have been exposed to the virus at the following locations, dates and times:

Location

Address

Date

Time

Watch for symptoms until (21 days after exposure)

Ritson North Urgent Care
1288 Ritson Road North, Oshawa
February 26, 2026
1:45 p.m. to 5:30 p.m.
March 19, 2026

Ritson North Urgent Care
1288 Ritson Road North, Oshawa
March 2, 2026
9 a.m. to 12:30 p.m.
March 23, 2026

Lakeridge Health Oshawa, Emergency Department Waiting Room
1 Hospital Court, Oshawa
March 2, 2026
11:25 a.m. to 2 p.m.
March 23, 2026

If you were potentially affected, you should monitor yourself for signs and symptoms of measles.

The health department is advising anyone who believes they may have been exposed to the measles virus at the above locations to do the following:

Confirm you and your family members have two doses of measles vaccine (MMR or MMRV); those born before 1970 would likely have had measles illness as a child and are protected. Individuals who are unsure of their vaccination status should check with their health care professional.
If you develop symptoms, stay home and do not attend work or school. Call ahead before visiting a clinic or hospital and let them know you may have measles to allow them to prepare and prevent the spread of the virus. Wear a well-fitting mask when getting a medical assessment.
Individuals who do not have access to a health care professional may also call Durham Health Connection Line at 905-668-2020 or 1-800-841-2729.

Measles is a highly contagious disease that spreads easily to those who are not immunized or have not previously had measles. Infants under one-year old, unimmunized pregnant individuals, and people with weakened immune systems are at increased risk of complications from measles. The measles virus can stay in the air or on surfaces for up to two hours. Measles symptoms typically begin seven to 21 days after infection and may include:

High fever (greater than or equal to 38.3 degrees Celsius)
Cough
Runny nose
Red, watery eyes (conjunctivitis, i.e. pink eye), sensitivity to light
Red rash lasting four to seven days

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