Moderna, Pfizer-BioNTech, and Janssen (Johnson & Johnson) vaccines all provide substantial protection against COVID-19 hospitalization. In a new study conducted in adults with normal immunity, mRNA vaccines were most effective at preventing COVID-19 hospitalization (Moderna: 93% effective, Pfizer-BioNTech: 88%). The Janssen adenovirus vaccine was 71% effective.
Photo by Nataliya Vaitkevich