N95 masks

A doctor wears goggles and an N95 mask during a drive through COVID-19 vaccine clinic in Kingston, Ont., Dec. 18, 2021. (Lars Hagberg/The Canadian Press)

It’s time to switch to an N95 mask in the battle against Omicron

It’s easier for the virus to move through surgical or cloth masks, experts say, while respirators filter tiny aerosols