S.F. considers mandating masks indoors regardless of vaccination status FacebookTwitterEmail 1of2 Doris Watkins wears a face mask while shopping for groceries at Trader Joe's on Friday, January 29, 2021, in San Francisco.Constanza Hevia H. / Special to The ChronicleShow MoreShow Less 2of2 San Francisco Mayor London Breed (center) with S.F. City Attorney Dennis Herrera (left) and State Senator Scott Wiener on July 27, 2021, in San Francisco, Calif.Santiago Mejia/The ChronicleShow MoreShow Less Mayor London Breed said Wednesday that San Francisco is exploring how it can “go further with its vaccine mandate” and also considering an indoor mask mandate for everyone, regardless of vaccination status.