U.S. Department of Health & Human Services

12/03/2021 | Press release | Distributed by Public on 12/03/2021 13:59

Information about the Moderna COVID-19 Vaccine

Clinical trials for the Moderna vaccine included people from the following racial, ethnic, age, and sex categories:


  • 79% White
  • 10% African American
  • 5% Asian
  • <3% other races/ethnicities
  • <1% American Indian or Alaska Native
  • <1% Native Hawaiian or Other Pacific Islander


  • 79% not Hispanic or Latino
  • 20% Hispanic or Latino
  • 1% unknown



  • 75% 18 through 64 years
  • 25% 65 years and older

Twenty-two percent (22%) of people who participated in the clinical trials had at least one condition that put them at risk of severe illness from COVID-19. The most frequent underlying medical conditions among participants were lung disease, heart disease, obesity, diabetes, liver disease, or HIV infection. Four percent (4%) of participants had two or more high-risk conditions.
Most people who participated in the trials (82%) were considered to have an occupational risk of exposure, with 25% of them being healthcare workers.