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.
Variant analysis of vaccine-related polioviruses. (A) Distribution of synonymous and nonsynonymous variants in the 5′ UTR and VP region of Sabin 1, Sabin 2, and Sabin 3 vaccine-related polioviruses. Horizontal black bars, medians. (B) Distribution of variant abundance in the 5′ UTR and VP region. Horizontal black bars, medians.
