The authors report on 37 new cases of eosinophilic meningitis collected in two years in an island with a population of 1,800. Recalling first the epidemiology of the disease, they describe the most frequent clinical signs met and the results of rachiocentesis which confirm the diagnosis. The disease strikes more than 1% of the population. It might not rapidly disappear as the only efficient prophylaxis would be to deprive the population, very attached to its traditions, of one traditional dish.