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.
Zhu Y, Weiss EC, Otto M, Fey PD, Smeltzer MS, Somerville GA.Zhu Y, et al. Among authors: fey pd.Infect Immun. 2007 Sep;75(9):4219-26. doi: 10.1128/IAI.00509-07. Epub 2007 Jun 18.Infect Immun. 2007.PMID: 17576756Free PMC article.