45 ticks (n = 9) significantly differed for B. burgdorferi (s.l.), Rickettsia spp., and "Ca. N. mikurensis", but were not related to the habitat type. Three hundred fifty eight out of 1078 I. ricinus ticks (33.2%) tested positive for at least one pathogen. Thereof, about 20% (71/358) were carrying two or three different potentially disease-causing agents. Using next generation sequencing, we could detect true pathogens, tick symbionts and organisms of environmental or human origin in ten selected samples. Conclusions Our data document the presence of pathogens in the (sub-) urban I. ricinus tick population in Switzerland, with carrier rates as high as those in rural regions. Carriage of multiple pathogens was repeatedly observed, demonstrating the risk of acquiring multiple infections as a consequence of a tick bite."/>
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Fig. 1 | Parasites & Vectors

Fig. 1

From: Prevalence of tick-borne pathogens in questing Ixodes ricinus ticks in urban and suburban areas of Switzerland

Fig. 1

Urban areas in Switzerland analyzed for the presence of pathogens in questing I. ricinus ticks. Tick collection was successful at 18 collection sites: (a) Basel (2 sites), (b) Bern (1 site), (c) Geneva (2 sites), (d) Lausanne (1 site), (e) Lugano (1 site), (f) Luzern (1 site), (g) Neuchâtel (2 sites), (h) Sion (1 site), (i) St. Gallen (1 site), (j) Winterthur (1 site), and (k) Zürich (5 sites)

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