Volume 17, Number 9—September 2011
Differential Risk for Lyme Disease along Hiking Trail, Germany
|Study site and tick stage
||Mean no. ticks collected in 1 hour*
||No. ticks examined
||% Ticks infected with pathogenic spirochetes
||Person’s risk for exposure in 1 hour†
*Nymph or female.
†Theoretic risk for exposure, mean number of questing nymphs or female ticks infected by pathogenic genospecies of spirochetes that cause Lyme disease: Borrelia afzelii, B. garinii, B. bavariensis, B. burgdorferi s.s., B. spielmanii.
‡Significantly smaller (p<0.0001 by Fisher exact test).
§Comparison lacks statistical meaning because only 1 adult tick infected with pathogenic spirochetes was collected.