An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

  • DOD experts explain: The science behind the COVID-19 vaccines

    Almost six weeks after the Food and Drug Administration issued emergency use authorization for the first two COVID-19 vaccines, many questions have arisen concerning their efficacy in attacking the SARS-CoV-2 virus and deadly COVID-19 disease.To better understand how COVID-19 vaccines work, MHS