30% of ticks carry pathogens

DECRYPTION – These mites which transmit Lyme disease are present everywhere in France, including in private gardens.

Mapping the presence of ticks on French territory and better understanding the infectious risks associated with their bites: it is with this dual objective that the participatory research program CiTIQUE was set up in July 2017.

In four years of existence, it has enabled the collection of 56,000 reports of tick bites in humans or animals, and the collection of 35,000 mites (ticks have four pairs of legs, but neither wings nor antennae, and are not no insects).

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A review of this work published on Tuesday shows that 15% of ticks are carriers of Borrelia burgdorferi sensu lato, the bacteria responsible for Lyme disease, and 14% of at least one other pathogen. About 2000 human biters, archived in a “ticothèque” unique in France, were analyzed. “The sample is still small, but it gives an idea of ​​the representation of the number of ticks carrying pathogens at the regional level, which was previously impossible., highlighted

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