John Libbey Eurotext

Environnement, Risques & Santé


Climate variability and incidence of cerebrospinal meningitis in the Korhogo health district (Northern Côte d’Ivoire) Volume 13, issue 2, Mars-Avril 2014


  • Figure 1
  • Figure 2
  • Figure 3
  • Figure 4
  • Figure 5
1 Centre suisse de recherches scientifiques en Côte d’Ivoire (CSRS)
01 BP 1303
Abidjan 01
Côte d’Ivoire
2 Université Félix Houphouët Boigny
01 BP V 34
Abidjan 01
Côte d’Ivoire
3 Université Péléforo Gon Coulibaly
Korhogo BP 1328
Côte d’Ivoire
4 Université de Ziguinchor
Département de géographie
BP 523 Ziguinchor
5 Université de Bâle
Institut tropical et de santé publique suisse (Swiss TPH)
Socinstrasse 57
* Tirés à part
  • Key words: Côte d’Ivoire, health district, meteorological factors, meningococcal meningitis
  • DOI : 10.1684/ers.2014.0687
  • Page(s) : 144-52
  • Published in: 2014

In northern Côte d’Ivoire, specifically in Korhogo, the decade 2000-2010 was marked by major climate variability, including relatively low rainfall in 2002-2003, followed by a severe drought in 2004 that led in 2005 to the drying of the dam holding the drinking water for the city of Korhogo. 2006 was characterized by a gradual recovery in rainfall ; in 2007, heavy rains caused flooding in Korhogo and its surroundings. The objective of this study was to examine the indirect effects of this climate variability on population health, in particular in relation to cerebrospinal meningitis. Historical clinical data about meningitis from 2005 to 2010 and meteorological data from 2004 to 2010 for the Korhogo health district were collected and analyzed. The yearly changes in the incidence of meningococcal meningitis during the period 2005-2010 was marked by an epidemic year (2006), following two years of extreme drought (2004 and 2005). The months of intense drought (January-February-March-April) are up the season when cerebrospinal meningitis occurs most often ; the most cases are recorded in February and March. Analysis of epidemiologic and meteorologic data during the epidemic year (2006) showed a significant negative correlation between the incidence of MCS and relative humidity (r=-0.61, p<0.05) and a significant positive correlation with temperature (r=0.66, p<0.05). These correlations do not fully explain the occurrence of epidemic meningitis, but they do point to indicators to be considered for setting up an early warning system for cerebrospinal meningitis.