Far too late, the CDC tacitly acknowledged that its recommendation to isolate indoors was a mistake. The agency eventually noted on its website, “Spending time outside when possible instead of inside can also help [prevent Covid spread]: Viral particles spread between people more readily indoors than outdoors.” Mayo Clinic wrote more plainly: “It’s much harder to catch the virus . . . when you are outside.” And the EPA now states, “Being indoors rather than outdoors” increases the risk of infection.
