A total of 819 serum samples collected from 2010 to 2011 were selected for evaluation of the ELISA. Half of the serum samples originated from the French West Indies (Martinique and Guadeloupe) where the mean incidence of leptospirosis is .30 per 100 000 inhabitants.The
remaining half were from patients from mainland France where the mean incidence of leptospirosis is approximately 0.4 per 100 000 inhabitants. A MAT, which can identify a
presumptive serogroup, was used as a reference standard to evaluate the ELISA procedure described in the present study