The French Pediatric
Infectious Diseases Group set up an active surveillance network to analyze the clinical and
biological features of
pneumococcal meningitis and the impact of the seven-valent pneumococcal
conjugate vaccine (PCV7). From 2001 to 2005, 234 pediatric wards working with 166 microbiology laboratories enrolled all children with
pneumococcal meningitis. Risk factors, signs and symptoms, vaccination status, cerebrospinal fluid analysis, treatments and case fatality rates were recorded. One hundred and sixty-nine centers (169/234) reported 616 cases, median age was 0.9 years and 67.2% of children were < or =2 years old. Underlying conditions were present in 13.1% of cases. The proportion of
penicillin non-susceptible strains was 48.7%.
Vancomycin plus a
third-generation cephalosporin was prescribed in 92.7% of cases, and
steroids were given before
antibiotic treatment in 16.5% of cases. The case fatality rate was 10.8% overall and was not related to age,
antibiotic susceptibility or
steroid use. In children 2 to 24 months old compared to the prevaccinal period (2001-2002) a decrease of 28.4% of the number of cases was observed in 2005 (P < 0.05). Among children 2 to 24 months old, the proportion of serotypes covered by the PCV7 fell from 39/57 (68.4%) in 2001-2002 to 19/45 (42.2%) in 2005, while the proportion of non-
vaccine serotypes and related serotypes increased respectively from 9/57 (15.8%) and 9/57 (15.8%) in 2001-2002 to 14/45 (31.1%) and 12/45 (26.7%) in 2005. Among 52 cases of
pneumococcal meningitis that have occurred in vaccinated children (> or =1 dose) with PCV7, 7 were due by
vaccine serotypes. This study provides data on underlying conditions,
penicillin susceptibility, serotype evolution according to vaccination status and risk factors for mortality for
pneumococcal meningitis in children from 2001-2005 in France.