La Côte-Saint-André, France
La Côte-Saint-André, France

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N'Krumah T.A.S.R.,Félix Houphouët-Boigny University | Kone B.,University Peleforo Gon Coulibaly Korhogo | Tiembre I.,Félix Houphouët-Boigny University | Mbaye I.,University of Ziguinchor | And 2 more authors.
Environnement, Risques et Sante | Year: 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.

M'bra Kouassi R.,Félix Houphouët-Boigny University | Kone B.,University Peleforo Gon Coulibaly Korhogo | Kouakou Yao E.,Nangui Abrogoua University | Silue B.,Nangui Abrogoua University | And 2 more authors.
Environnement, Risques et Sante | Year: 2015

Access to safe water supply and sanitation in developing countries is challenging and this situation was aggravated in the city of Korhogo (Nord Côte d'Ivoire) due to huge climate variability during the decade 2000-2010. The objectives of the study are to : (i) characterize water access in Korhogo, (ii) determine the environmental and socio-sanitary factors which affect water's quality and availability, (iii) assess health risks associated to waters use. Two household surveys by questionnaire and two geographical surveys were conducted in 2010 in 600 households respectively during dry and rainy seasons. A health surveys and laboratory analyzes of water samples from wells and dam were performed. The quantitative microbial risk assessment (QMRA) was used to quantify the health risks associated with Escherichia coli and Giardia lamblia. It appears from this study that the stagnant wastewater and solid wastes are the potential risk factors for well-water pollution. Wells water is the main source of household's water supply in the city during the rainy season (60 %) and the dry season (65 %). The QMRA shows that there is a risk of E. coli infection due to wells and dam water. Annual probable infected cases are 2′002 ; 1′280 ; 59 ; and 24 persons respectively due to well-water consumption, gardening around the dam, fishing and swimming in the dam water. The results of this study are useful for the implementation of an integrated mitigation strategy of health risks due to water supply and hygiene deficiency that may increase with climate changes in the city of Korhogo. Copyright © 2015 John Libbey Eurotext.

Cisse M.,CIRAD - Agricultural Research for Development | Cisse M.,University Peleforo Gon Coulibaly Korhogo | Polidori J.,CIRAD - Agricultural Research for Development | Montet D.,CIRAD - Agricultural Research for Development | And 2 more authors.
Postharvest Biology and Technology | Year: 2015

Influence of chitosan coating with or without the active antimicrobial lactoperoxidase system was studied on postharvest mangoes. Mangoes were treated with three concentrations of chitosan (0.5; 1; 1.5%) containing or not lactoperoxidase with or without iodine as a second electron donor. Coatings containing 1 and 1.5% chitosan incorporated with lactoperoxidase system efficiently inhibited fungal proliferation and delayed mango ripening. Iodine did not influence antifungal activity. Ripening parameters (firmness, respiration, weight loss and color) were not influenced by the lactoperoxidase system, but were more influenced by chitosan concentration. Chitosan coating alone reduced weight loss, and delayed the decline in firmness and respiration rate. It exhibited a beneficial effect on the contents of total soluble solids (TSS), ascorbic acid, total acidity (TA) and pH. © 2014 Elsevier B.V.

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