News Coronavirus live updates: Pfizer says vaccine may be ready by end of October; Canada’s top doctor urges wearing a mask during sex September 3, 2020September 3, 2020Jessica Flores, Ryan W. Miller and Grace Hauck, USA TODAYComments Off on Coronavirus live updates: Pfizer says vaccine may be ready by end of October; Canada’s top doctor urges wearing a mask during sex Pfizer CEO says company may have 'safe' vaccine soon. More colleges shift reopening plans. Jobless aid claims still high. Latest COVID-19 news.