CDC Flu Map: Week Ending 11/24/12

Data collected in ILINet are used to produce a measure of ILI activity* by state. Activity levels are based on the percent of outpatient visits in a state due to ILI and are compared to the average percent of ILI visits that occur during spring and fall weeks with little or no influenza virus circulation.

Activity levels range from minimal, which would correspond to ILI activity from outpatient clinics being below the average, to intense, which would correspond to ILI activity from outpatient clinics being much higher than average.

During week 47, the following ILI activity levels were experienced:

• Five states experienced high ILI activity (Alabama, Louisiana, Mississippi, Tennessee, and Texas).
• Two states experienced moderate ILI activity (Georgia and Missouri).
• Four states experienced low ILI activity (Hawaii, Ohio, Utah, and Virginia).
• New York City and 39 states experienced minimal ILI activity (Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Vermont, Washington, West Virginia, Wisconsin and Wyoming).
• Data were insufficient to calculate an ILI activity level from the District of Columbia.
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