San Francisco is ordering city residents to stay in their homes to fight the spread of the novel coronavirus epidemic. The shelter-in-place order will remain in effect through at least April 7. "Effective at midnight, San Francisco will require people to stay home except for essential needs," Mayor London Breed tweeted at noon Monday. "Necessary government functions & essential stores will remain open." Individuals are asked to avoid all gatherings except for medical purposes, to get food, or to care for a friend or relative. People should work from home unless they provide essential services, such as public safety, sanitation and medical services. "You’ll still be able to walk your dog or go on a hike alone or with someone you live with or with a friend as long as you stay six feet apart," Colfax said.