Lyme disease

Lyme borreliosis, or Lyme disease, is an infectious disease caused by bacteria of the Borrelia burgdorferi sensu lato complex, which is transmitted to humans through the bites of infected ticks.

Our missions

  • Monitoring epidemiological trends of Lyme disease in France

  • To increase public and healthcare professionals’ knowledge of Lyme disease and tick-borne illnesses and to promote the adoption of preventive measures.

The disease

An infectious disease transmitted by tick bites

Lyme disease is the most common tick-borne illness in France. It is caused by a bacterium of the Borrelia burgdorferi sensu lato complex transmitted to humans through bites from infected hard ticks of the genus Ixodes. The main pathogenic species...

Learn more

What We Do

Lyme disease is present throughout France, but its distribution is uneven.
In 2019, approximately 30% of the French population reported having been bitten by a tick at some point in their lives, and about 21% reported having never heard of Lyme disease.
In this context, Santé publique France’s...

Learn more

Data

National Surveillance of Lyme Disease

Surveillance of cases diagnosed in primary care, 2009–2024

Between 2009 and 2024, the estimated number of Lyme disease cases diagnosed in primary care ranged from 26,146 (in 2014) to 68,530 cases (in 2018) per year. In 2024, this number was estimated at...

Learn more

Tools

Here you will find the resources (videos, TV spots, radio spots) and prevention materials made available to healthcare professionals and the general public

Publications

Here you will find the latest scientific publications related to the studies and research conducted by Santé publique France.

2 publications