How will you know when you can get a coronavirus vaccine? Officials explain rollout FacebookTwitterEmail 1of2 Surgeon Varinder Phangureh gets his second dosage of the Pfizer vaccine from nurse Sara Gallagher (right) at St. Rose Hospital on Wednesday, Jan. 6, 2021 in Hayward, California. They were administering both the first dosage and second dosage of the vaccine.Gabrielle Lurie/The ChronicleShow MoreShow Less 2of2 Dr. Karl Sporer prepares a dosage of the Moderna COVID-19 vaccine at St. Rose Hospital on Wednesday, Jan. 6, 2021 in Hayward, California. They were administering both the first dosage and second dosage of the vaccine.Gabrielle Lurie / The ChronicleShow MoreShow Less