Influenza

Welcome to ADPH's Influenza Surveillance website. ADPH is monitoring the strains circulating and where disease activity is reported.

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Influenza in Alabama

Influenza activity levels continue to remain significant across the state. During Week 02 (January 7-13, 2018), the geographic spread in Alabama was observed to be “widespread”. Widespread indicates lab-confirmed case(s) along with elevated influenza-like illness (ILI) or reported ILI outbreaks in five or more of the eight Public Health Districts (PHD). Several positive flu specimens in the Northern, Northeastern, West Central, Jefferson, East Central, Southwestern, and Southeastern Districts of the state were identified in the previous three weeks. Influenza A (H3), Influenza A (2009 H1N1), and Influenza B/Yamagata were identified in specimens submitted to the State Laboratory. The State Laboratory also identified influenza A, H3N2 (variant) in one submitted specimen, which was confirmed by the Centers for Disease Control and Prevention (CDC). Additional testing is underway.

It is not too late to get vaccinated! For those who have not received their annual influenza shot, the quadrivalent vaccine, which protects against four (quad) strains, is the only vaccine available that provides protection against Influenza B (Yamagata).

  • To review the geographic spread of ILI in Alabama, please visit the Influenza Surveillance Map (this map works best with recent supported versions of Google Chrome, Internet Explorer 11, Mozilla Firefox, Safari, Opera, and many mobile devices).
  • graph displaying ILI data and positive influenza specimens submitted to the Bureau of Clinical Laboratories (BCL) is also available.

Influenza-Like Illness (ILI) Data

As part of the CDC’s U.S. Outpatient Influenza-Like Illness Surveillance Network (ILINet), 84 healthcare providers in Alabama report the number of patients with ILI by age group and the total number of patients seen each week. ILI is defined as fever that is greater than or equal to 100 degrees Fahrenheit (37.8 degrees Celsius) AND cough and/or sore throat (in the absence of a known cause other than influenza). There is no requirement for a positive influenza test when determining the number of patients with ILI.

Twenty-four outbreaks of ILI or influenza were investigated in the Northern, Northeastern, West Central, Jefferson, East Central, Southwestern, and Southeastern Districts of the state. ILI activity increased in 7 of the 8 PHDs, for which data were available.

The chart below indicates ILI activity is still increasing throughout Alabama.

 

Influenza-like Illness (ILI) Data Reported to Alabama Department of Public Health (as of 01/17/2018)

Districts

Week Ending January 13

Week Ending January 6

Week Ending December 30

Northern

12.05

11.2

10.93

Northeastern

14.06

11.56

8.88

West Central

11.17

10.49

10.56

Jefferson

8.19

6.68

6.10

East Central

12.20

9.57

9.79

Southwestern

14.09

8.27

8.46

Southeastern

9.33

7.14

5.95

Mobile

No data

2.94

0.00

*ILI threshold for significance in Alabama (Season 2017-18): 3.4%

 

If you are interested in becoming an ILINet participant, please email Infectious & Outbreaks Diseases Division, call 1-800-338-8374, or complete and fax the ADPH ILINet Application.

Viral Surveillance

ADPH's viral surveillance depends on hospitals and healthcare providers to voluntarily submit specimens from ILI patients to BCL throughout the year for influenza detection and subtype information. Influenza specimen submissions from healthcare providers help answer the questions of where, when, and what influenza viruses are circulating. ADPH requests that hospitals submit specimens for admitted patients with ILI and all physicians submit specimens for pregnant patients with ILI, as well as recent international travelers with ILI.

Any provider can submit influenza specimens for BCL testing. To find out more about ordering a flu kit, specimen collection, , and shipping instructions, see the Quick Guide for Influenza Specimen Submission or the detailed Guidance for Lab Testing for Influenza Viruses.

CDC Influenza Control and Outbreak Guidelines

Additional Information for Health Professionals


Page last updated: January 18, 2018