Seroprevalence Surveys in Special Populations

CDC is learning more about how people in special populations like healthcare workers and first responders have been infected with SARS-CoV-2, the virus that causes COVID-19. This information is being collected through seroprevalence surveys, which use serological (blood) tests to find out if people in a population or community have antibodies to infections, in this case SARS-CoV-2.