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.
Impacts of vaccination on the incidence and case fatality between Delta and Omicron periods among the 50 countries. (A) Impacts of partial vaccination coverages on the incidence and case fatality between Delta and Omicron periods. (B) Impacts of fully vaccination coverages on the incidence and case fatality between Delta and Omicron periods. (C) Impacts of booster vaccination coverages on the incidence and case fatality between Delta and Omicron periods.
