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.
Vogel U, Claus H, Frosch M.Vogel U, et al.Int J Med Microbiol. 2004 Sep;294(2-3):75-82. doi: 10.1016/j.ijmm.2004.06.027.Int J Med Microbiol. 2004.PMID: 15493817Review.