Covid-19: Stale air can transmit the coronavirus

A Cambridge doctor says he wants the government to do more to warn the public that infected air is a major source of transmission of Covid-19 and that ventilating rooms is just as important as washing hands. He warned that the need to open windows and ventilate indoor spaces to disperse the virus is not being publicised enough by the government when research shows eight out of ten cases are caused by breathing in infected air. And he says cloth masks offer only “minimal protection” against these tiny particles which can stay floating in the air.