(CNN)When New York Governor Andrew Cuomo announced last week that malls in New York could not reopen until they installed high-efficiency particulate air filters capable of trapping the virus that causes Covid-19, Harvard environmental health researcher Joseph Gardner Allen was thrilled.”I’ve been writing consistently since early February about how healthy buildings should be the first line of defense against the novel coronavirus,” said Allen, who directs the Healthy Buildings program at the Harvard T.H. Chan School of Public Health. [READ MORE]