The Walgreens Flu Index for the week ending Dec. 12, 2014, shows the latest statistics for flu cases in designated market areas.
The index is a weekly report with that produces data and drives consumer awareness and prevention within those communities. The index also serves as a resource for health departments. The index is not intended to illustrate levels or severity of flu activity, but rather to illustrate which populations are experiencing the highest incidence of the flu.
The index uses retail prescription data for antiviral medications for treating influenza at Walgreens locations nationwide. The index does not include markets where Walgreens has fewer than 20 stores.
The area with the highest incidence of flu activity for the week ending Dec. 12 was Harlingen-Weslaco-Brownsville-McAllen, Texas.
Louisiana was the state with the highest flu activity, followed by Texas, Mississippi, Alabama, Tennessee, Illinois, Kentucky, Missouri, Georgia and Oklahoma.
Rockford, Illinois, showed the largest increase in flu activity.
Kentucky was the state with the highest increase in reported flu cases, followed by Texas, Mississippi. Tennessee, Illinois, Missouri, Oklahoma, Iowa, Indiana and Colorado.