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Volume 17, Number 9—September 2011

Differential Risk for Lyme Disease along Hiking Trail, Germany

Dania RichterComments to Author  and Franz-Rainer Matuschka
Author affiliations: Author affiliation: Charité Universitätsmedizin Berlin, Berlin, Germany

Main Article

Table 1

Density of Ixodes ricinus ticks, prevalence of pathogenic Lyme disease spirochetes, and theoretic risk for exposure to such infected ticks along a trail, southern Germany, May–October 2006 and March–October 2007

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 11.8 104 3.8‡ 0.45
Nymph 87.2 188 21.8 19.01
Fallow land
Nymph 129.3 502 17.5 22.63
Adult 38.0 291 13.7 5.21

*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.

Main Article

Page created: September 06, 2011
Page updated: September 06, 2011
Page reviewed: September 06, 2011
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