US cities shut down to slow virus outbreak

Nearly 7 million people in the San Francisco area were all but confined to their homes Tuesday, while Florida put a damper on spring break and St. Patrick’s Day by ordering the closing of all bars, as state and local officials took an increasingly hard line against the coronavirus.Ohio canceled its presidential primary hours before the polls were to open, but three other states pressed ahead with their elections, recommending such precautions as putting tape on the floor to keep voters a s