Figure 1. Vaccine Exposure Windows and Periods for Outcome Assessment.
4vHPV indicates quadrivalent human papillomavirus vaccine; 9vHPV, 9-valent human papillomavirus vaccine; LMP, last menstrual period; and SGA, small for gestational age.
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.