2007 Lyme Disease Surveillance Results

7 December 2007

At the end of 2007, 185 blacklegged tick samples had been submitted in 2007 to the ISU medical entomology laboratory from counties around the state. The pie charts on the map above indicate the proportion of the three major tick species sent in from each county. Red denotes the blacklegged tick (Ixodes scapularis), yellow-the dog tick (Dermacentor variabilis) and blue-the lonestar tick (Amblyomma americanum). The total number of ticks submitted from each county is indicated by the size of the pie chart. Black-legged ticks that are submitted are tested for the presence of the bacterium that causes Lyme disease (Borrelia burgdorferi). B. burgdorferi positive samples were identified in 9 counties (shown in grey)in 2007. Many thanks to those of you who have contributed specimens. This very important project is supported by the Iowa Department of Public Health. Tick testing takes place in the University Hygienic Lab (Iowa City, IA). For more information about ticks in Iowa, please see the "Ticks and Tick-borne Diseases in Iowa" pamphlet recently published through University Extension. More information about submitting ticks to this project can be found through this LINK.