Georgia's number of total COVID-19 tests includes serology tests, health department officials confirm

In an email May 21, Georgia Department of Public Health officials confirmed the inclusion of serology tests in with the number of total COVID-19 tests administered. (Courtesy Adobe Stock)
In an email May 21, Georgia Department of Public Health officials confirmed the inclusion of serology tests in with the number of total COVID-19 tests administered. (Courtesy Adobe Stock)

In an email May 21, Georgia Department of Public Health officials confirmed the inclusion of serology tests in with the number of total COVID-19 tests administered. (Courtesy Adobe Stock)

Editor's note: This story has been updated to include clarification from the GDPH on whether serology tests producing positive COVID-19 results were also being included in confirmed case counts and to include additional comments from the CDC.

Georgia has seen 40,157 cases of COVID-19, according to the 9 a.m. update from the Georgia Department of Public Health's COVID-19 daily status report. The report also indicates that 404,207 COVID-19 tests have been administered as of 9 a.m.; however, 57,000 of those tests are serology tests—or antibody tests, which can be used to determine the prevalence of the disease in a population—rather than diagnostic tests for the virus, said Nancy Nydam, a communications representative for the GDPH, in an email May 21. Nydam responded to a request from Community Impact Newspaper to confirm if serology tests were being included in the number of total tests as reported on the department's COVID-19 status report.

"The Georgia Department of Public Health has received reports of antibody tests since early April and, following current Centers for Disease Control and Prevention methodology, has included tests received in the 'Total Tests' number currently listed on the DPH COVID-19 daily status report. DPH staff is currently working diligently to provide greater transparency in the molecular and serologic testing data displayed in the daily status report," Nydam said in the email. "One of our top priorities is to provide accurate and timely data to the public and we will continue to make every effort to do so."

Nydam also said the department plans on updating the website to separate the two types of tests in the COVID-19 daily status report, as the report currently only states the number of total tests without any separation between serology and diagnostic tests.

"The number of serology tests reported to the DPH is 57,000, and we will continue to get new reports so that number will change daily. Serology tests are useful in determining the prevalence of the disease in the population and have been authorized by the [U.S. Food and Drug Administration] for use in COVID-19," she said in the email. "We will update the website to reflect the number of 'total tests' that are serology vs. [polymerase chain reaction]."


When subtracting the 57,000 serology tests from the reported number of total tests administered, the number of administered COVID-19 tests totals 347,207. With 40,157 positive cases, this means 11.57% of the tests have returned with a positive test result—almost 2% higher than if the percentage was calculated including the 57,000 serology tests.

Nydam said in an email May 21 that patients with only serology results are not considered confirmed COVID-19 cases.

"If a patient has only serology/antibody results, they are not considered confirmed cases but rather a 'probable' case, according to CDC guidance. DPH epidemiologists keep track of these serologic 'positives' as probables but do not include them in our confirmed totals," she said in the email.

Additionally, CDC Public Affairs Representative Kristen Nordlund said in an email May 21 that serology test numbers are also being included with total COVID-19 tests in the CDC's online coronavirus data tracker.

"Initially, when CDC launched its website and its laboratory test reporting, viral testing (tests for current infection) were far more commonly used nationwide than serology testing (tests for past infection). Now that serology is more widely available, CDC is working to differentiate those tests from the viral tests and will report this information, differentiated by test type, publicly on our COVID Data Tracker website in the coming weeks," Nordlund said in the email. "This is just one presentation of this data—often states have their own presentation of the data that is driving their decisions."
By Kara McIntyre
Kara started with Community Impact Newspaper as the summer intern for the south Houston office in June 2018 after graduating with a bachelor's degree in mass communication from Midwestern State University in Wichita Falls, Texas. She became the reporter for north Houston's Tomball/Magnolia edition in September 2018, moving to Alpharetta in January 2020 after a promotion to be the editor of the Alpharetta/Milton edition, which is Community Impact's first market in Georgia.


MOST RECENT

The U.S. Census Bureau will halt its counting operation a month earlier than expected. (Courtesy U.S. Census Bureau)
U.S. Census Bureau to halt counting operation a month earlier than expected

The self-response deadline has moved up to Sept. 30.

Coronavirus cell
Alpharetta's Wills Park Pool closes after staff member tests positive for COVID-19

An employee of the Wills Park Pool tested positive for COVID-19, resulting in the closure of the Wills Park Pool until further notice, city officials announced Aug. 3.

Woman getting a facial
Clean Your Dirty Face facial bar expected to open by early November at Halcyon

The facial bar is anticipated to open in late October or early November.

Sorry we are closed sign board hanging on door
Alpharetta's My Stir Fry permanently closes

The restaurant announced its permanent closure June 6.

Brown bag school lunches
Fulton County Schools to host drive-thru version of First Day Fulton on Aug. 1

The event will take place at Banneker High School in south Fulton County and North Springs High School in north Fulton County.

Coronavirus cell
Coronavirus in Georgia: 3 of 4 Alpharetta, Milton ZIP codes see decline in new cases

Alpharetta and Milton ZIP codes 30022, 30005 and 30004 saw decreases in the number of new cases in two two-week periods, while ZIP code 30009 saw an increase during that time, according to the latest epidemiology report from the Fulton County Board of Health.

Regal movie theaters plan to reopen Aug. 21. (Dylan Skye Aycock/Community Impact Newspaper)
Here’s what the moviegoing experience will look like when Regal theaters reopen this summer

Face masks will be required of guests in lobbies, hallways, restrooms and in auditoriums when not eating or drinking.

The resolution was passed by the AFT's 45-member executive council and announced by AFT President Randi Weingarten during the union's biennial convention July 28. (Graphic by Ronald Winters/Community Impact Newspaper)
American Federation of Teachers releases resolution supporting 'safety strikes' as 2020-21 school year approaches

According to AFT President Randi Weingarten, the ability for schools to reopen safely hinges on the federal government as state budgets continue to get slashed amid the pandemic-induced economic downturn.

Coronavirus cell
Coronavirus in Georgia: Current hospitalizations show decreases for first time since early June

Current hospitalizations have shown mostly decreasing totals over the last seven days, according to COVID-19 data from the Georgia Emergency Management and Homeland Security Agency.

Construction cones
City of Alpharetta approves construction plan contracts to add lanes to Old Milton Parkway

Alpharetta City Council approved contracts at the July 20 meeting to continue progress on the widening of Old Milton Parkway between North Point Parkway and Kimball Bridge Road.