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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
The epidemiology of Haemophilus influenzae type b meningitis in Burkina Faso.
Pediatric Infectious Disease Journal 2006 May
BACKGROUND: Haemophilus influenzae type b (Hib) disease burden studies are important to conduct in African countries that plan to introduce vaccine so that vaccine impact can be documented.
METHODS: We implemented population-based meningitis surveillance in 3 districts of Burkina Faso for 12 months each during 2002-2003 and 2004-2005 using polymerase chain reaction, culture and antigen detection.
RESULTS: Lumbar puncture was performed on 1686 patients and 112 had Hib identified. Persons <1, <5, 5-14 and 15+ years of age had annual Hib meningitis incidences of 97, 34, 2.1 and 0.55 per 100,000, respectively; overall case fatality proportion was 25%. During the historic meningitis epidemic season months of December through April, the proportion of purulent cerebrospinal fluid among children aged <5 years that yielded Hib was 27% compared with 30% during other months. Twenty-five of 98 persons with information available were treated with only one or 2 doses of oily chloramphenicol. Among children age <5 years with Hib meningitis, 28% were pretreated with antimalarials and antimalarial pretreatment was associated with delay in hospitalization.
CONCLUSIONS: In Burkina Faso, Hib meningitis incidence and case fatality proportion are high and thus vaccine could have a substantial impact. While awaiting well-implemented routine infant Hib vaccination, empiric case management for pediatric meningitis in sub-Saharan Africa must recognize that Hib is likely even during the epidemic season. In malaria-endemic areas, pediatric Hib meningitis case management may be adversely affected by the similar presentation of these 2 diseases.
METHODS: We implemented population-based meningitis surveillance in 3 districts of Burkina Faso for 12 months each during 2002-2003 and 2004-2005 using polymerase chain reaction, culture and antigen detection.
RESULTS: Lumbar puncture was performed on 1686 patients and 112 had Hib identified. Persons <1, <5, 5-14 and 15+ years of age had annual Hib meningitis incidences of 97, 34, 2.1 and 0.55 per 100,000, respectively; overall case fatality proportion was 25%. During the historic meningitis epidemic season months of December through April, the proportion of purulent cerebrospinal fluid among children aged <5 years that yielded Hib was 27% compared with 30% during other months. Twenty-five of 98 persons with information available were treated with only one or 2 doses of oily chloramphenicol. Among children age <5 years with Hib meningitis, 28% were pretreated with antimalarials and antimalarial pretreatment was associated with delay in hospitalization.
CONCLUSIONS: In Burkina Faso, Hib meningitis incidence and case fatality proportion are high and thus vaccine could have a substantial impact. While awaiting well-implemented routine infant Hib vaccination, empiric case management for pediatric meningitis in sub-Saharan Africa must recognize that Hib is likely even during the epidemic season. In malaria-endemic areas, pediatric Hib meningitis case management may be adversely affected by the similar presentation of these 2 diseases.
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