CALGARY -- Health officials say three residents at a continuing care centre in northwest Calgary have died from COVID-19.

Dr. Deena Hinshaw, Alberta's chief medical officer of health, announced the deaths during her daily update Friday.

There are no details when the residents died, but officials say the victims consisted of a man and woman in their 90s and a woman in her 80s.

A fourth resident, a man in his 80s at Extendicare Hillcrest on Eight Avenue N.W., has also died from complications due to coronavirus.

"Let us remember this virus still poses a risk, particularly to the elderly and people with chronic medical conditions. We need to remember that no Albertan is expendable and their lives matter as much as any of ours, and to keep the grieving family and friends of those who have lost to COVID-19 in our thoughts," Hinshaw said.

There were 58 new cases of the illness reported in Alberta Friday, with 4,464 reported in the Calgary Zone alone. Of those, 870 cases are active.

There have been 125 deaths attributed to COVID-19 so far.

Asymptomatic cases found in Calgary

Hinshaw also said that some of the early results of asymptomatic testing in the City of Calgary has returned and more than four dozen cases of patients who are not exhibiting any symptoms of illness have been found.

"Since Monday, we have identified 50 COVID cases, who are reported as having no symptoms. It is important to note, first of all, that I do not have information on how many of these are asymptomatic close contacts of confirmed cases. And how many have no known exposure."

Approximately 1,500 tests of asymptomatic individuals have been conducted in Calgary, Hinshaw said.

A full investigation into the cases is underway.