Moore S., Dongdem A. Z., Opare D., Cottavoz P., Fookes M., Sadji A. Y., Dzotsi E., Dogbe M., Jeddi F., Bidjada B., Piarroux M., Valentin O. T., Glele C. K., Rebaudet S., Sow A. G., Constantin de Magny Guillaume, Koivogui L., Dunoyer J., Bellet F., Garnotel E., Thomson N., Piarroux R. (2018). Dynamics of cholera epidemics from Benin to Mauritania. PLoS Neglected Tropical Diseases, 12 (4), p. e0006379 [16 p.]. ISSN 1935-2735.
Titre du document
Dynamics of cholera epidemics from Benin to Mauritania
Année de publication
2018
Auteurs
Moore S., Dongdem A. Z., Opare D., Cottavoz P., Fookes M., Sadji A. Y., Dzotsi E., Dogbe M., Jeddi F., Bidjada B., Piarroux M., Valentin O. T., Glele C. K., Rebaudet S., Sow A. G., Constantin de Magny Guillaume, Koivogui L., Dunoyer J., Bellet F., Garnotel E., Thomson N., Piarroux R.
Source
PLoS Neglected Tropical Diseases, 2018,
12 (4), p. e0006379 [16 p.] ISSN 1935-2735
Background The countries of West Africa are largely portrayed as cholera endemic, although the dynamics of outbreaks in this region of Africa remain largely unclear. Methodology/Principal findings To understand the dynamics of cholera in a major portion of West Africa, we analyzed cholera epidemics from 2009 to 2015 from Benin to Mauritania. We conducted a series of field visits as well as multilocus variable tandem repeat analysis and whole-genome sequencing analysis of V. cholerae isolates throughout the study region. During this period, Ghana accounted for 52% of the reported cases in the entire study region (coastal countries from Benin to Mauritania). From 2009 to 2015, we found that one major wave of cholera outbreaks spread from Accra in 2011 northwestward to Sierra Leone and Guinea in 2012. Molecular epidemiology analysis confirmed that the 2011 Ghanaian isolates were related to those that seeded the 2012 epidemics in Guinea and Sierra Leone. Interestingly, we found that many countries deemed "cholera endemic" actually suffered very few outbreaks, with multi-year lulls. Conclusions/Significance This study provides the first cohesive vision of the dynamics of cholera epidemics in a major portion of West Africa. This epidemiological overview shows that from 2009 to 2015, at least 54% of reported cases concerned populations living in the three urban areas of Accra, Freetown, and Conakry. These findings may serve as a guide to better target cholera prevention and control efforts in the identified cholera hotspots in West Africa.
Plan de classement
Santé : généralités [050]
;
Entomologie médicale / Parasitologie / Virologie [052]
Description Géographique
BENIN ; MAURITANIE
Localisation
Fonds IRD [F B010073114]
Identifiant IRD
fdi:010073114
