An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Koh Y, Aoki M, Danish ML, Aoki-Ogata H, Amano M, Das D, Shafer RW, Ghosh AK, Mitsuya H.Koh Y, et al. Among authors: shafer rw.J Virol. 2011 Oct;85(19):10079-89. doi: 10.1128/JVI.05121-11. Epub 2011 Aug 3.J Virol. 2011.PMID: 21813613Free PMC article.