A woman wears a face mask and plastic gloves while browsing books as a sticker on the floor indicates a one-way direction of travel between shelves of books at the Vancouver Public Library's central branch, after it and four other branches reopened with limited services, in Vancouver, on July 14, 2020. As people around the world remain isolated in their homes, avoiding close contact with others and meticulously sanitizing their hands and surfaces, scientists warn there may be unintended consequences of these necessary pandemic protocols. THE CANADIAN PRESS/Darryl Dyck