The Regional Health Agency (ARS) of Brittany has announced a large-scale vaccination campaign for 100,000 young people aged 15 to 24 in the Rennes metropolitan area following several cases of meningitis.
In France, an increase in cases of invasive meningococcal disease (IMD), primarily serogroup B, was observed during the 2024-2025 season, peaking in January. The Rennes metropolitan area, with nearly half a million inhabitants, is particularly affected.
Since December, the ARS of Brittany has managed several cases of type B IMD in Ille-et-Vilaine, including two outbreaks at a business school and within a family. Analysis of the bacteria by the Pasteur Institute revealed infection with the same strain.
The investigation did not establish an epidemiological link between the clusters of cases, suggesting the circulation of the strain in the Rennes metropolitan area.
To protect the at-risk population, a vaccination campaign against meningococcus B is beginning for young people aged 15 to 24 who live or study in the Rennes metropolitan area, encompassing 43 municipalities. The vaccination will take place over several weeks to ensure access for everyone.
Sophie de Duiéry
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