Effective Monday, July 20, masks will be required in higher-risk businesses, as well as on public transit within the London-Middlesex health region.

Heat warnings from Environment Canada and Middlesex-London Health Unit (MLHU) are expected to remain in effect through to Sunday.

In the lead-up to Canada Day, Environment Canada is calling for temperatures of over 30 C for the next few days in London and Middlesex.

"Following up with the more than 160 or 170 cases in the two days that we have seen, it's unmanageable by any single agency or any other public health unit."

Dr. Chris Mackie addressed declaration at Friday's COVID-19 media briefing, explaining that the next steps in addressing the crisis involve 'two streams of work.'

A report on coronavirus going before the Board of Health outlines the preliminary findings of race and socioeconomic data collected by the health unit since April.

Medical officer of health, Dr. Chris Mackie, said the case involving an inmate comes after a "wave of screening at EMDC."

Many councillors raised concerns about police responding to mental health calls and about funding for public health.

One case was reported in North Middlesex — the first new case to be confirmed outside of London in nearly a month, health unit figures show.

"Within an hour to an hour and a half, we have literally millions of people that can come into our community."