Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2023 May 2:M21-4269. doi: 10.7326/M21-4269

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

This article is made available via the PMC Open Access Subset for unrestricted re-use for research, analyses, and text and data mining through PubMed Central. Acknowledgement of the original source shall include a notice similar to the following: "© 2020 American College of Physicians. Some rights reserved. This work permits non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited." These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

PMC Copyright notice

Figure 1. — Coverage on each day was calculated as 10 000 times the number of persons in each status, divided by the number of persons alive and registered. BNT162b2 = Pfizer–BioNTech BNT162b2 mRNA vaccine; ChAdOx1 = Oxford–AstraZeneca ChAdOx1 nCoV-19 AZD1222 vaccine.