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.
(a) Cross-spectrum of HA1 of representative seasonal H1N1 viruses (n = 1576). (b) Cross-spectrum of all currently available Egyptian H5N1-HPAIV (n = 526). (c) Cross-spectrum of Egyptian H5N1-HPAIV isolated between 2006–2008 and (d) 2009–2011.
