College cases of CDC-defined “flu-like illness” have nosedived
Influenza Like Illness (ILI) in Colleges and Universities
(Week Ending November 13, 2009)
The following depicts an epicurve charting of weekly college ILI incidence (CDC ILI case definition) [ICD-CM Diagnosis 487.1] reported by institutions of higher education since inception of this ILI surveillance network (beginning with case reporting for the weekly period August 22-28, 2009). New ILI case incidence (each week) is depicted by the vertical bars, while the resulting weekly attack rates (per 10,000 population) are depicted by the corresponding line on the chart.
ACHA thanks all participating institutions involved in this surveillance effort. Together, our efforts should provide college health professionals and public health officials with a greater understanding of the pace and geography of newly emerging cases and better understand and manage response to the novel H1N1 flu pandemic.
Limitations: State case counts and rates do not represent the state’s entire population, nor the rate of ILI among all institutions of higher education in the state. The case counts and rates only represent those institutions of higher education that participate in the surveillance program.
Suggested Citation: American College Health Association. American College Health Association Influenza Like Illnesses (ILI) Surveillance in Colleges and Universities Fall 2009: Weekly College ILI cases reported. Linthicum, MD: American College Health Association; 2009.