Figure 1.
Trial profile, intent-to-treat and per-protocol (PP) analyses, China, 2014 PP = per-protocol. cIPV = conventional inactivated poliovirus vaccine. bOPV = bivalent oral poliovirus vaccine. tOPV = trivalent oral poliovirus 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.