“As a parent, I would be concerned,” air quality expert says of N.B. school results

CBC News:

High carbon dioxide levels indicate poor air quality, which can cause health concerns, engineer says…
HVAC engineer Joey Fox says schools should have only 1,000 parts per million of carbon dioxide, but several New Brunswick schools exceeded that, with one peaking at 3,914…
Data recently released by the Department of Education shows [37 schools had peak carbon dioxide levels above 1,500 parts per million](37 schools had peak carbon dioxide levels above 1,500 parts per million), which the department set as the peak “desirable” level for schools…
Carbon dioxide, or CO2, is used as a proxy to measure air quality and the rate at which air is being renewed…
But when air quality is poor, people get sick more often with respiratory viruses, including COVID-19, the flu, respiratory syncytial virus (RSV) and the common cold…