Canada is heading into its first winter of the COVID-19 pandemic, and some experts say the change in seasons will serve the coronavirus that causes the illness well. Winter weather can also help the virus stay aloft longer and travel farther, he says— because of the drier air that typically comes with lower temperatures, and how that affects the respiratory droplets we exhale. "If you have enough people in a poorly enough ventilated space, [like] holiday time in the winter ... that's sort of the perfect storm for virus transmission," he said. There's still a lot scientists don't know about how homemade masks will perform in winter, Furness says. Until the data on masks in winter comes in, Furness seconds the advice for extra caution.

Source: CBC News November 07, 2020 09:00 UTC