As Grand Erie’s health unit searches for a new medical officer of health, Ontario’s former top doc has stepped in to help the region manage a measles outbreak.

Dr. David Williams, who was Ontario’s chief medical officer of health from 2015 to 2021, has joined Grand Erie Public Health “to provide additional temporary support,” the health unit announced in a news release on Thursday.

Williams led the province’s response to the early days of the COVID-19 pandemic. Since he retired in 2021, he has advised various Ontario health units.

His move to Grand Erie comes as Dr. Rebecca Comley returns to the role of acting medical officer of health for GEPH, which covers Haldimand-Norfolk and Brantford-Brant.

Comley had been top doc for the former Brant County Health Unit, which merged with H

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