San Francisco will require proof of full vaccination for entry to an array of indoor businesses, including restaurants, gyms and theaters, becoming the first major U.S. city to impose such a stringent mandate. The order also includes large indoor events with more than 1,000 people, Mayor London Breed said Thursday. It takes effect Aug. 20 for patrons, with some limited exceptions, and Oct. 13 for employees. The move comes as the San Francisco area, which suffered one of the country’s first coronavirus outbreaks last year, is seeing case counts rise again due to the fast-spreading delta variant. New York City imposed a similar order last week, but only required that indoor diners and gym patrons have one vaccine dose. Breed, speaking in the city’s North Beach neighborhood, an area popular for its restaurants and bars, said the move is an important step toward preventing a return to broader restrictions that have hurt the city’s businesses. “It’s to make sure I never have to get up in front of you and say, ‘I’m sorry, the city’s closed again, because otherwise too many people are going to die,’” she said. Subscribe to our YouTube channel: https://bit.ly/2TwO8Gm Subscribe to our newest channel Quicktake Explained: https://bit.ly/3iERrup Bloomberg Quicktake brings you live global news and original shows spanning business, technology, politics and culture. Make sense of the stories changing your business and your world. To watch complete coverage on Bloomberg Quicktake 24/7, visit http://www.bloomberg.com/qt/live, or watch on Apple TV, Roku, Samsung Smart TV, Fire TV and Android TV on the Bloomberg app. Have a story to tell? Fill out this survey for a chance to have it featured on Bloomberg Quicktake: https://cor.us/surveys/27AF30 Connect with us on… YouTube: https://www.youtube.com/user/Bloomberg Breaking News on YouTube: https://www.youtube.com/c/BloombergQuickTakeNews Twitter: https://twitter.com/quicktake Facebook: https://www.facebook.com/quicktake Instagram: https://www.instagram.com/quicktake