European Journal of Epidemiology

, Volume 10, Issue 1, pp 75–80

Borrelia burgdorferi in rodents (Apodemus flavicollis andA. sylvaticus): Duration and enhancement of infectivity forIxodes ricinus ticks

  • L. Gern
  • M. Siegenthaler
  • C. M. Hu
  • S. Leuba-Garcia
  • P. F. Humair
  • J. Moret
Article

DOI: 10.1007/BF01717456

Cite this article as:
Gern, L., Siegenthaler, M., Hu, C.M. et al. Eur J Epidemiol (1994) 10: 75. doi:10.1007/BF01717456

Abstract

Ixodes ricinus is an important vector ofBorrelia burgdorferi in Europe, and small rodents (Apodemus flavicollis, A. sylvaticus andClethrionomys glareolus) are important sources for infecting ticks. In this study, we examined their reservoir role by studying the duration of their infectivity for ticks.A. flavicollis andA. sylvaticus mice captured in nature were exposed to uninfectedI. ricinus larvae at different times after their capture: 10 days, and 2, 7, 11, 14 and 40 months. Ticks were examined for spirochaetes after moulting using direct immunofluorescence. All animals remained infective for ticks their life long but the efficiency of transmission from hosts to ticks varied from one individual to the other, presenting a three-fold variation (26.5% to 81.4%). Rodents continously exposed to successive infestations by larvalI. ricinus ticks over a period of one month showed an enhancement of infectivity for larval ticks during this period.

Key words

Apodemus sp.Borrelia burgdorferiInfectivity to tickIxodes ricinus

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • L. Gern
    • 1
  • M. Siegenthaler
    • 1
  • C. M. Hu
    • 1
  • S. Leuba-Garcia
    • 1
  • P. F. Humair
    • 1
  • J. Moret
    • 2
  1. 1.Institut de ZoologieUniversité de NeuchâtelNeuchâtelSwitzerland
  2. 2.Institut de MathématiquesUniversité de NeuchâtelNeuchâtelSwitzerland