CDC wants to learn more about the spread of COVID-19 in communities. CDC wants to learn more about the percentage of people in select counties and communities in the United States who have been infected with SARS-CoV-2, the virus that causes COVID-19.
Learning about infections in these communities can help CDC to understand more about how COVID-19 might be spreading in other communities with similar populations.
To better understand the percentage of infections in a community, CDC is collaborating with state and county health departments to conduct community-level seroprevalence surveys.
These surveys use laboratory tests to check a person’s blood for antibodies, which can show if that person had a past infection with the virus that causes