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.
Galen JE, Chinchilla M, Pasetti MF, Wang JY, Zhao L, Arciniega-Martinez I, Silverman DJ, Levine MM.Galen JE, et al. Among authors: pasetti mf.J Infect Dis. 2009 Feb 1;199(3):326-35. doi: 10.1086/596066.J Infect Dis. 2009.PMID: 19099487Free PMC article.