Introduction

The Georgia Department of Public Health (DPH) is pleased to present the Georgia Weekly Influenza and other Respiratory Diseases Report throughout the respiratory viral disease season. The purpose of the report is to monitor the spread of influenza and other respiratory viruses and measure the impact that infections have on illness, hospitalizations, and deaths.

In Georgia, influenza is not a reportable condition with the exception of influenza-associated deaths and outbreaks. Therefore, this surveillance report is possible through DPH’s partnerships with the Centers for Disease Control and Prevention, Georgia Emerging Infections Program, and a number of voluntary reporting healthcare providers and laboratories.

Ongoing surveillance is essential to monitor changes in circulating influenza viruses, guide treatment decisions, and to understand the impact influenza and other respiratory viral pathogens are having on our community.

Week 48, Ending November 30, 2024

Summary of Select Influenza Surveillance Measures

*Cumulative data may include updated numbers from previous weeks.

Please refer media requests to . All other requests can be sent to .

Georgia Virologic Surveillance

The National Respiratory and Enteric Virus Surveillance System (NREVSS) and World Health Organization (WHO) collaborating laboratories (a combination of clinical and public health laboratories) report the total number of respiratory specimens tested for influenza and the number of positive for influenza, by virus type. Clinical data is used to monitor increasing or decreasing influenza activity. Public Health Laboratories provide data about influenza virus subtypes and lineages which is used to monitor the proportion of viruses by subtype and lineages.

Clinical Laboratories

4041424344454647484950515201020304050607080910111213141516171819200510152025303540450246810
ABOverallABInfluenza Positive Tests Reported by Clinical LaboratoriesGeorgia, 2024-2025 Influenza SeasonWeekNumber of Positive Specimens (Bars)Percent Positive (Lines)
Summary: Clinical Laboratory Positives

Public Health Laboratories

40414243444546474849505152010203040506070809101112131415161718192002468101214
A (Unknown Subtype)A (H1N1)pdm09A (H3N2)B (Unknown Lineage)B (Victoria)B (Yamagata)Influenza Positive Tests Reported by Public Health LaboratoriesGeorgia, 2024-2025 Influenza SeasonWeekNumber of Positive Specimens
Summary: Public Health Laboratory Positives

Outpatient Illness Surveillance

The U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet) monitors outpatient healthcare visits due to influenza-like illness (ILI), not laboratory confirmed influenza. ILI is defined as fever (temperature of 100ºF [37.8ºC] or greater) and cough and/or sore throat.

A total of 99 sentinel providers reported data for week 48, 4.6% of patient visits were for ILI. This is above the regional baseline of 3.2%*.

ILINet data should be interpreted with caution as it may include individuals who are seeking care due to other respiratory illness such as SARS-CoV-2. Additionally, healthcare seeking behavior may have changed due to the emergence of SARS-CoV-2.

*The regional baseline is formulated by averaging ILI percentage during weeks of endemic activity determined by laboratory results for influenza. HHS Region 4 (AL, FL, GA, KY, MS, NC, SC, and TN) (Baseline: 3.2%).

ILINet Percentages By Season

404142434445464748495051520102030405060708091011121314151617181920246810
2020-212021-222022-232023-242024-25BaselinePercentage of Visits for Influenza-like Illness (ILI) Reported by the Outpatient Influenza-like Illness Surveillance Network (ILINet)Georgia, 2024-2025 and Selected Previous SeasonsWeekPercent of ILI Visits
Summary: Percent ILI Visits

ILINet Visits By Age Group

404142434445464748495051520102030405060708091011121314151617181920200400600800100012001400
00-0405-2425-4950-6465+Number of Visits for Influenza-like Illness (ILI) by Age, Reported by the Outpatient Influenza-like Illness Surveillance Network (ILINet)Georgia, 2024-2025 Influenza SeasonWeekNumber of ILI Visits
Summary: Number of ILI Visits

Weekly Influenza-like Illness Activity Indicator

ILI Activity Levels measure ILI activity each week. Activity levels are based on the percent of outpatient visits in Georgia due to ILI compared to the 3-year average of ILI visits during weeks with little or no influenza virus circulation. During week 48, the activity level in Georgia was 8 - High.

404142434445464748495051520102030405060708091011121314151617181920024681012
13 - Very High12 - Very High11 - Very High10 - High9 - High8 - High7 - Moderate6 - Moderate5 - Low4 - Low3 - Minimal2 - Minimal1 - Minimal0 - Insufficient DataWeekly ILI Activity IndicatorGeorgia, 2024-2025 Influenza SeasonWeekActivity Indicator
Weekly ILI Activity IndicatorWeek 48, 2024-2025 Influenza Season

Influenza-Associated Hospitalizations

The Influenza Hospitalization Surveillance Network (FluSurv-Net) reports laboratory confirmed influenza hospitalizations in the eight-county metro Atlanta area (Fulton, DeKalb, Clayton, Cobb, Douglas, Gwinnett, Rockdale, and Newton) for the 2024-2025 influenza season. There were 12 laboratory confirmed influenza hospitalizations confirmed for week 48.

A total of 75 laboratory confirmed influenza hospitalizations have been reported for the 2024-2025 season.

40414243444546474849505152010203040506070809101112131415161718192005101520
Flu AFlu BFlu A&BNumber of Laboratory Confirmed Influenza Hospitalizations 8 County Metro Atlanta Area, 2024-2025 Influenza SeasonWeekNumber of Hospitalizations
Summary: Influenza Hospitalizations

Influenza-Associated Deaths

Influenza-associated deaths (in all ages) are reportable by law in the state of Georgia. To be confirmed as a as influenza-associated death, the person must have a clinically compatible illness, a positive influenza test, no documented recovery between the illness and death.

There were 0 influenza-associated deaths confirmed for week 48 in Georgia.

A total of 0 influenza-associated deaths have been confirmed for the 2024-2025 season.

40414243444546474849505152010203040506070809101112131415161718192001
Number of Laboratory Confirmed Influenza Deaths by Week of Death Georgia, 2024-2025 Influenza SeasonWeekNumber of Deaths
Summary: Influenza Deaths

Influenza Outbreaks

Influenza outbreaks are reportable by law in the state of Georgia. A confirmed influenza outbreak is defined as any cluster of illness with at least one associated influenza positive individual.

0 influenza outbreaks were reported for week 48.

A total of 1 laboratory confirmed influenza outbreaks have been reported in Georgia for the 2024-2025 season.

40414243444546474849505152010203040506070809101112131415161718192001
Number of Laboratory Confirmed Influenza Outbreaks by Week Reported to Public Health Georgia, 2024-2025 Influenza SeasonWeekNumber of Outbreaks

Respiratory Syncytial Virus Infection (RSV) Surveillance

Data from NREVSS are also analyzed to measure the RSV seasonality. Antigen and polymerase chain reaction (PCR) tests are analyzed separately to determine the start and end of RSV season. Season onset is defined as the first week of two consecutive weeks when the percent positive of ALL laboratory confirmed tests are greater than or equal a certain threshold. The end is defined as the first week of two consecutive weeks when the percent positive of ALL laboratory confirmed tests are less than a certain threshold. For antigen-based testing, the threshold is 10% and for PCR the threshold is 3%.

During week 48, clinical laboratories in Georgia reported testing 2,087 (17.2% positive) antigen specimens and 714 (20.6% positive) PCR specimens.

Summary: Number of Tests (% RSV Positive)

Other Respiratory Disease Surveillance

Trends in influenza, RSV, and other respiratory viruses are displayed below using NREVSS polymerase chain reaction (PCR) testing data.

40414243444546474849505152010203040506070809101112131415161718192005101520253035
AdenovirusCoronavirus (Seasonal)hMPVInfluenzaParainfluenzaRhino-EnteroRSVPercent Positive of Selected Respiratory Diseases using polymerase chain reaction (PCR) Tests Reported by Clinical LaboratoriesGeorgia, 2024-2025 SeasonWeek% Positive by PCR
Summary: Number of PCR Tests (% Positive)