Texas Influenza Activity Map - Week Ending March 17, 2012 #1358242 (License: Personal Use)

The map illustrates county-level influenza surveillance data from the U.S. Centers for Disease Control and Prevention (CDC), using a six-tier color scheme to denote activity levels-from no reports (gray) to co-circulating Flu A and B (red). Each county is shaded according to lab-confirmed or rapid-test results, with patterns indicating missing data. The legend clarifies distinctions between influenza-like illness, rapid test positives, and culture/PCR-confirmed subtypes.

Used in public health dashboards, epidemiological reports, or educational materials to convey geographic flu burden during the 2011-2012 season; supports outbreak tracking, resource allocation, and historical trend analysis for health professionals and policymakers.