LONDON, ONT. -- Many health care workers who treat COVID-19 patients are growing concerned that they haven’t yet been fully vaccinated against the virus. The concerns come as intensive care units acoss the province continue to operate beyond their capacity. “Everything feels a little more heavy,” said Amanda Dodge McLean, an emergency room nurse working in southwestern Ontario. “Then obviously it compounds and when, especially if you've had a case where we resuscitate somebody, and you find out later they're COVID positive.” Dodge McLean tells CTV News London she received her first dose of a COVID-19 vaccine on Feb. 26. She was supposed to get the second dose four weeks later, but the appointment was cancelled.