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Table 1 Results from the epidemiological and microbiological surveillance of meningitis in Niger (2008-2011)

From: Epidemiological changes in meningococcal meningitis in Niger from 2008 to 2011 and the impact of vaccination

Year Notified cases Deaths CFR CSF collected % CSF collected/declared cases Nm (all types) Nm A Nm W Nm X Other serog. Non-typ. Nm Spn Hi Other Negative CSF
2008 3851 256 6.65 2716 70.5 1082 1067 (98.6%) 0 5 0 10 117 33 23 1461
2009 13943 589 4.22 3915 28.1 1696 1654 (97.5%) 11 15 1 (Y) 15 78 12 66 2063
2010 2908 251 8.63 2384 82.0 921 243 (26.4%) 665 (72.2%) 1 0 12 93 22 26 1322
2011 1344 164 12.20 1041 77.5 410 5 402 (98.1%) 1 0 2 70 2 12 547
Total 22046 1260 5.71 10056 45.6 4109 2969 1078 22 1 39 358 69 127 5393
  1. Epidemiological data are from the Direction of Surveillance and Response to Epidemics (DSRE), Ministry of Public Health; Microbiological data from CERMES.
  2. CSF, cerebrospinal fluid; Nm, Neisseria meningitidis, CFR, case fatality rate.
  3. Spn, Streptococcus pneumoniae; Hi, Haemophilus influenzae.
  4. ‘Other’ are other aetiologies (i.e. Salmonella sp.), contaminated or broken samples.