DeKalb County, GA- If you live in DeKalb County, public health officials could soon be knocking on your door.

“Between April 28 to May 4, teams of public health professionals will visit randomly selected homes in different areas of Fulton and DeKalb counties,” an announcement from the state Department of Public Health says. “Household members will be asked to answer survey questions and provide a blood sample to be tested for antibodies for SARS-CoV-2, the virus that causes COVID-19. Antibodies are produced when someone has previously been infected with COVID-19.”

The antibody tests, known as serology tests because they look at blood “serum,” can’t determine whether someone has an active COVID-19 infection when the sample is taken, the announcement says. The antibodies take one to three weeks to develop.

“The antibody test can help identify people who were infected but didn’t have symptoms or weren’t tested for COVID-19,” the announcement says. “This testing is important to understand who has had the virus. The results of this study may help provide important information needed to help public health officials understand COVID-19 and inform future strategies to prevent further spread of the virus.”

Participation in the survey is voluntary.

The announcement says, “Teams will be identifiable by their CDC vests and CDC badges. They will also have an official letter from CDC and the GA Department of Public Health.”

Here is the full announcement from the Georgia Department of Public Health.

The Georgia Department of Public Health (DPH) is partnering with Centers for Disease Control and Prevention (CDC) and the Fulton and DeKalb County Boards of Health to conduct an antibody testing survey to better understand how many people may have already been infected with the virus that causes COVID-19.

Between April 28 to May 4, teams of public health professionals will visit randomly selected homes in different areas of Fulton and DeKalb counties. Household members will be asked to answer survey questions and provide a blood sample to be tested for antibodies for SARS-CoV-2, the virus that causes COVID-19. Antibodies are produced when someone has previously been infected with COVID-19.

“We encourage everyone who is visited by the teams to participate in this very important survey that can help public health officials assess how widespread COVID-19 is in certain areas,” said Kathleen E. Toomey, M.D., M.P.H., DPH commissioner. “This is another way that Georgians can play a role in helping fight this virus.”

Antibody tests, also known as serology tests because they look at blood “serum,” cannot determine if a person has an active COVID-19 infection at the time the sample is taken. The antibodies for SARS-CoV-2 typically take one to three weeks to develop.

The antibody test can help identify people who were infected but didn’t have symptoms or weren’t tested for COVID-19. This testing is important to understand who has had the virus. The results of this study may help provide important information needed to help public health officials understand COVID-19 and inform future strategies to prevent further spread of the virus.

Fulton and DeKalb counties were selected because community transmission of confirmed COVID-19 cases is occurring in these counties. The areas that teams will visit within each county are census blocks, used by the U.S. Census Bureau, and were randomly selected. Households will be randomly selected within each area. Only homes approached by the investigation teams are eligible to participate. Participation is voluntary. Teams will be identifiable by their CDC vests and CDC badges. They will also have an official letter from CDC and the GA Department of Public Health.

For more information about the serosurvey, visit https://dph.georgia.gov/covid-19-antibody-testing

For general information about antibody testing, also known as serology testing, visit the CDC website https://www.cdc.gov/coronavirus/2019-ncov/lab/serology-testing.html

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