Tests of air quality in long-term care homes, hospitals OK, officials say
As experts mull recommendations regarding ventilation and COVID-19 transmission ahead of the winter, Quebec health officials said Monday that air quality tests carried out in long-term care homes and hospitals earlier this month revealed satisfactory readings.
Health Minister Christian Dubé said an analysis of carbon dioxide levels was done at his request between Nov. 19 and 23 in about 70 establishments, mostly in the Quebec City area and in central Quebec.
The health department said carbon dioxide levels are considered a good indicator of ventilation efficiency, and authorities carried out tests in different settings, including bathrooms, waiting areas and patient rooms.
The results come as a group of experts examining the link between air quality and COVID-19 spread is set to issue recommendations in early December, with particular attention to schools and health-care facilities.
The World Health Organization and the Public Health Agency of Canada have both said aerosol transmission and spread of COVID-19 is a concern.
“The expert group will therefore have to look in particular at the additional preventive and, if necessary, mitigation measures that could be put in place, if necessary,” the health department said in a statement.
Concern about indoor air quality has been heightened in the province, which on Monday reported 1,333 new COVID-19 infections and 23 additional deaths linked to the virus, along with an increase in hospitalizations and patients in intensive care.
The results announced Monday were from tests done mostly in so-called cold zones without COVID-19 patients, but some were in hot zones, and the testing covered different kinds of ventilation systems, including just open windows.
The results for Quebec City came back at 651 parts per million and at 707 parts per million in central Quebec, both below the maximum of 1,110.
But one Montreal health official questioned whether the ventilation systems in place in long-term care centres are adequate.
Francine Dupuis is associate CEO of the Montreal regional health authority that on Sunday had to transfer 20 COVID-19 patients from a long-term care home, the Maimonides Geriatric Centre, to local hospitals.
“We are waiting for the recommendations of public health, but probably too many people at the same place is not a good idea for the ventilation system,” Dupuis said in an interview Sunday.
“These ventilation systems have been created for long-term care facilities, not acute care facilities like hospitals.”
On Tuesday, Quebec's schools will also have their air quality tested. Education Minister JeanFrançois Roberge, in announcing tests last week, said any necessary improvements would be made over the Christmas break.