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.
CSA indicates Central and South America; EE, Eastern Europe; EMA, Eastern Mediterranean Region and Africa; IV, intravenous; NA, North America; SEA, Southeast Asia; WE, Western Europe; and WP, Western Pacific.
