San Francisco Chronicle-
San Francisco Mayor London Breed and city health officials will issue a directive Wednesday canceling all gatherings that draw large crowds — including Golden State Warriors games — to help protect against the spread of the new coronavirus.
City health officials will issue an order Wednesday formally prohibiting public gatherings of 1,000 or more people. The order will go into effect within the next 24 hours — the city has to provide direct notification to venues — and will last for at least two weeks.