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© Perrine Bomme, Guillaume Duménil, Jean-Marc Panaud.
Coloured scanning electron micrograph (SEM) of Neisseria meningitidis on epithelial cells
Publication : Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin

Epidemiology of invasive meningococcal disease in France in 2003

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin - 01 Dec 2005

Perrocheau A, Taha MK, Levy-Bruhl D

Link to Pubmed [PMID] – 16371693

Euro Surveill. 2005 Dec;10(12):238-41

National surveillance of invasive meningococcal disease (IMD) is based on mandatory reporting. The case definition for surveillance notification was changed in mid-2002 to include cases without microbiological confirmation. The IMD alert detection system was enhanced in 2003 with daily reporting and weekly analysis by district, serogroup, and age. Evaluation of the exhaustivity of the surveillance with capture-recapture analysis allowed correcting for underreporting. In 2003, 803 cases were reported. After correction for under-reporting, the estimated incidence was 1.78 / 100,000. After excluding ‘new’ cases reported with new definition criteria, the 2002-2003 increase was 4%. Incidence decreased with age, with the highest values in infants less than 1 year (20/100,000), children aged between 1 and 2 years (11/100,000) and in teenagers of 17 years old(7/100,000). The overall case fatality rate was 12%. Fifty nine per cent of cases were due to serogroup B, 32% to C, 5% to W135, and 4% to Y and non-groupable meningococci. Patients with purpura fulminans treated with intravenous antibiotics before admission to hospital were shown to have lower fatality rates than those not treated. In 2001-2003, 5 situations required particular attention: two clusters of serogroup B IMD had set off mass prophylaxis, one outbreak due to a specific B IMD clonal complex with high case fatality rate, and two districts crossed the alert threshold for serogroup C IMD, 2/100,000, and mass vaccination was recommended.