Volume 12, Number 12—December 2006
Research
Modulatory Effect of Cattle on Risk for Lyme Disease
Table
Prevalence of spirochetes in questing nymphal and adult Ixodes ricinus ticks sampled in and outside a cattle pasture, France*
Cattle in site | Ticks examined | % Ticks infected by Borrelia | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Stage | No. | % Infected | ±SD | B. afzeli | B. garinii | B. valaisiana | B. burgdorferi s.s. | B. lusitaniae | B. spielmanii | B. miyamotoi | |
Present | Nymph | 238 | 5.5 | 5.8 | 2.9 | 0.4 | 0 | 0.4 | 0.4 | 0 | 1.3 |
Adult | 136 | 5.9 | 3.7 | 3.7† | 1.5 | 0 | 0 | 0.7 | 0 | 0.7 | |
Absent | Nymph | 95 | 22.1 | 5.8 | 5.3 | 9.5 | 4.2† | 0 | 4.2 | 0 | 0 |
Adult | 236 | 40.3 | 2.3 | 13.6† | 12.7 | 3.0‡ | 0.4 | 7.6 | 1.3 | 3.0 *SD, standard deviation. *SD, standard deviation. |
*SD, standard deviation.
†Includes a tick coinfected with B. garinii.
‡Includes 2 ticks coinfected with B. garinii.