Tick zoonoses in the southern part of Switzerland (Canton Ticino): occurrence of Borrelia burgdorferi sensu lato and Rickettsia sp.

摘要: The diversity and the distribution of tick species their infection rates by pathogenic micro-organism Borrelia burgdorferi sensu lato, etiologic agent Lyme borreliosis, Rickettsia sp., were studied in Canton Ticino (the southern part Switzerland). Ticks specimens collected from animals humans classified analysed for presence both pathogens. In particular, PCR analysis was performed detection spirochetes Ixodes ricinus hexagonus, hemolymph test done on Rhipicephalus sanguineus sp. assays, 424 989 ticks, revealed a low rate (around 2%) vectors I. hexagonus B. lato. These results are agreement with modest number borreliosis cases yearly recorded Ticino. Further, through DNA sequences, strains carried infected ticks identified as belonging to genomic group VS116. widespread finding Mediterranean different locations July 1994 October 1995 demonstrates its establishment Of 210 collected, 70 one