An official website of the United States government
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.
Periods of vaccination and laboratory-confirmed influenza virus infections among participants in a trial of trivalent inactivated influenza vaccine (IIV3) in children in Dhaka, Bangladesh, 2010–2014.