Bacterial meningitis is a major cause of morbidity and mortality in childhood. Antibiotic treatment recommendations are based on epidemiological and susceptibility data. The epidemiology of bacterialméningitis has changed in recent years, mainly owing to widespread use of different conjugate vaccines. The aim of this prospective national survey is to describe epidemiology of bacteria implicated in bacterial meningitis in children.

For children under 18, hospitalized for bacterial meningitis, the following data will be analyzed: risk factors, vaccination status, signs of symptoms, treatment during hospitalization, analysis (cerebrospinal fluid culture, cerebrospinal fluid antigen test, blood culture...), symptoms or clinic signs of illness.

Inclusion Criteria:

• clinical signs of meningitis, associated with positive cerebrospinal fluid (CSF) culture and/or positive CSF antigen testing (Escherichia coli K1, N. meningitidis serogroups B, A, C, Y and W-135, group B streptococci, Hib, or S. pneumoniae), and/or positive CSF polymerase chain reaction (PCR), and/or positive blood culture with CSF pleocytosis (> 10 cells/µL).
• purpura fulminans

Exclusion Criteria:

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children 0 day to 18 years with bacterial meningitis or purpura fulminans