Figure 2. Estimated vaccine effectiveness after ≥1 dose of BNT162b2 or ChAdOx1.
BNT162b2 = Pfizer–BioNTech BNT162b2 mRNA vaccine; ChAdOx1 = Oxford–AstraZeneca ChAdOx1 nCoV-19 AZD1222 vaccine.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.