(Francois Vigneault/Radio Canada)How good is the evidence that mandatory mask laws reduce transmission? Most mandatory mask regulations in Canada so far concern transportation situations where people may have trouble physically distancing. Are there other concerns about mandatory mask laws? Like Loeb, Zwibel questions whether there's enough scientific evidence yet to support mandatory mask laws covering a wide range of public places. She said other countries with mandatory mask laws have provided masks to their populations.

Source: CBC News June 17, 2020 18:45 UTC