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.
Ruyra A, Cano-Sarabia M, García-Valtanen P, Yero D, Gibert I, Mackenzie SA, Estepa A, Maspoch D, Roher N.Ruyra A, et al. Among authors: yero d.Vaccine. 2014 Jun 30;32(31):3955-62. doi: 10.1016/j.vaccine.2014.05.010. Epub 2014 May 14.Vaccine. 2014.PMID: 24837767Free article.