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.
Rahbar A, Söderberg-Nauclér C.Rahbar A, et al.J Virol. 2005 Feb;79(4):2211-20. doi: 10.1128/JVI.79.4.2211-2220.2005.J Virol. 2005.PMID: 15681423Free PMC article.