Ontario Measles Outbreak Through the Eyes of Frontline Healthcare Workers

Photo:AP

The measles outbreak in southern Ontario has been described by health-care workers as a constant, exhausting battle—from the moment they wake until they fall asleep.

With more than 2,000 cases in Canada this year—over 2,000 in Ontario alone—and more than 3,000 across Canada  hospitals are seeing diseases they haven't encountered in decades. Measles spreads quickly, often before obvious symptoms like a rash appear, which puts frontline staff at risk.

Nurse-practitioner Carly Simpson, confident she was protected by three measles shots, still contracted the disease—though mildly. She believes she caught it from a patient with early symptoms at her clinic . Another healthcare worker, Shawn Cowley, also had a milder case but remained out of work for a week—and worried he’d exposed others at the grocery store before realizing he was infected.

Doctors call it a “slow burn” outbreak—daily admissions, complicated hospital layouts, and strict infection controls are straining staff . Emergency departments in places like St. Thomas, Woodstock, and Tillsonburg have had to set up negative-pressure rooms and mobile isolation zones to safely treat patients .

Still, fewer than 7% of cases have required hospital admission—though many patients are children, pregnant women, or immune-compromised individuals . Frontline workers describe the challenge of deciding when to discharge children, worried about long-term complications like brain swelling .

While weekly case counts are beginning to stabilize and slightly decline, officials warn it's too early to declare the crisis over .