COVID-19 UCLA Health myUCLAhealth Find A Doctor Overwhelmed by vaccine information? We have answers to 6 frequently asked questions. There are now two COVID-19 vaccines authorized for use by the U.S. Food and Drug Administration: the Pfizer-BioNTech vaccine and the Moderna vaccine. You may be wondering: How do they work? And when can I … Continue reading Your COVID-19 Vaccine Questions Answered