more than 14% of the world’s population have already contracted it, according to a large study

Ticks have been on the increase all over the world for a dozen years. A meta-analysis provided an overall estimate of the epidemiology of Borrelia burgdorferi (Bb) infection in humans and refined knowledge of the risk factors. Three regions on the planet are particularly affected and they concern the northern hemisphere.

More than 14% of the world’s population has had Lyme disease, the most common tick-borne disease, according to a meta-analysis, which compiles studies on the subject. Lyme borreliosis, or Lyme disease, is an infectious disease caused by a bacterium of the complex Borrelia burgdorferi sensu lato transmitted to humans by bites of infected ticks.

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According to the compilation published Tuesday in the journal BMJ Global Health, Central Europe has the highest infection rate with 20%. And men over 50 living in rural areas are most at risk. To show how common Lyme disease is around the world, the researchers identified 137 eligible studies — out of a possible 4,196 — and pooled data from 89 of them. In 14.5% of the approximately 160,000 participants in total, antibodies against the bacterium Borrelia burgdorferi (Bb) have been found in blood. ” This is the most comprehensive and up-to-date systematic review of the global seroprevalence of Bb “says the study.

After Central Europe, the regions with the highest antibody rates are East Asia with 15.9%, Western Europe with 13.5% and Eastern Europe. Is with 10.4%. The Caribbean has the lowest rate, with only 2%.

It is recommended to walk in the forest with covering clothes. But beware, ticks are also present in gardens. © Gabort, Adobe Stock

Why so many ticks?

Previous research had shown that the prevalence of tick-borne diseases had doubled in the past 12 years. This increase is due to longer and drier summers due to climate change, animal migration, and more and more frequent contact with pets “, according to the study. Farmers and other workers who regularly interact with…

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