2009 Lyme Disease Surveillance Results

As of November 9th, 2009, 104 blacklegged tick samples have been submitted 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 American dog tick (Dermacentor variabilis) and blue - the lone star tick (Amblyomma americanum). The total number of ticks submitted from each county is indicated by the size of the pie chart.
 

LDSP_November 9 2009
 
Because they are infected with and transmit the bacterium that causes Lyme disease (Borrelia burgdorferi), black-legged ticks that are submitted are tested for the presence of B. burgdorferi. Positive samples have been identified in 6 counties (shown in grey) thus far in 2009. 

 

Species

Total

B. burgdorferi +

B. burgdorferi -

Testing pending

I. scapularis

104

11

79

14

D. variabilis

180

n/a

n/a

n/a

A. americanum

69

n/a

n/a

n/a

In addition to these ticks, the LDSP has received one Rhipicephalus sanguineus and 6 Carios kelleyi, in 2009. 

This very important project is supported by the Iowa Department of Public Health. Tick testing takes place at the University of Iowa Hygienic Lab.  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.