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.
Simon JK, Wahid R, Maciel M Jr, Picking WL, Kotloff KL, Levine MM, Sztein MB.Simon JK, et al. Among authors: wahid r.Vaccine. 2009 Jan 22;27(4):565-72. doi: 10.1016/j.vaccine.2008.10.081. Epub 2008 Nov 18.Vaccine. 2009.PMID: 19022324Free PMC article.
Ruiz-Perez F, Wahid R, Faherty CS, Kolappaswamy K, Rodriguez L, Santiago A, Murphy E, Cross A, Sztein MB, Nataro JP.Ruiz-Perez F, et al. Among authors: wahid r.Proc Natl Acad Sci U S A. 2011 Aug 2;108(31):12881-6. doi: 10.1073/pnas.1101006108. Epub 2011 Jul 18.Proc Natl Acad Sci U S A. 2011.PMID: 21768350Free PMC article.