Toronto mask makers ready to adjust designs if rules change for COVID-19 variants
Experts say three-layer masks remain effective as long as it fits tightly and is worn properly
By Julia Mastroianni
Samuel Engelking
As highly contagious variants of the COVID-19 virus begin to spread in Canada and elsewhere, some public health officials around the world are switching up face mask advice.
Variants first found in South Africa and the UK have been cropping up in Canada, including the B117 variant from the UK, which studies show is as at least 56 per cent more transmissible than the original strain of the virus.