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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
immunology and microbiology
Can environmental and socioeconomic factors explain the recent emergence of Rift Valley fever in Yemen, 2000-2001?
Vector-Borne and Zoonotic Diseases, Volume 11, No. 6, Year 2011
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Description
Rift Valley fever (RVF) is a major vector-borne zoonosis first identified on the African continent in the early 1900s. In 2000, RVF was reported for the first time in Yemen. In this study, we provide a descriptive analysis of the period 1999-2007 in Yemen, taking into account the environmental and socioeconomic factors likely to have been involved in the emergence of RVF in the country. We characterize each year in the study period by the environmental conditions (linked to vegetation indexes), the festival calendar, and economic data. We then use a principal component analysis to synthesize the different variables, assess whether the year 2000 was atypical compared with other years in the study period, and, if that was the case, in what respect. Our results show that 2000 presented above-normal vegetation index values, which reflect important precipitation, for both the two rainy seasons (the first between March and May; the second between July and October). These environmental conditions, ones favorable to mosquito vector populations, coincided that year with a late (March) starting date of the Eid al-Kabeer festival, which corresponds to a period with high host (cattle, sheep, goats) densities. According to these criteria, 2000 was an atypical year. These conclusions suggest that it is important to consider social variables in addition to environmental ones when assessing the risk of RVF emergence. © Copyright 2011, Mary Ann Liebert, Inc.
Authors & Co-Authors
Abdo-Salem, Shaif
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
Belgium, Liege
Université de Liège
Yemen, Yemen
University of Dhamar
Tran, Annelise
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
France, Montpellier
Territoires, Environnement, Télédétection et Information Spatiale
Grosbois, Vladimir
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
Gerbier, Guillaume
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
Al-Qadasi, Mansoor
Yemen
Animal Health and Vet Quarantine
Saeed, Khalid
Yemen
Animal Health and Vet Quarantine
Etter, Eric Marcel Charles
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
Thiry, Par Etienne
Belgium, Liege
Université de Liège
Roger, François Louis
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
Chevalier, Véronique
France, Montferrier-sur-lez
Animal, Santé, Territoires, Risques et Ecosystèmes Astre
Statistics
Citations: 45
Authors: 10
Affiliations: 5
Identifiers
Doi:
10.1089/vbz.2010.0084
ISSN:
15303667
e-ISSN:
15577759
Research Areas
Infectious Diseases
Study Design
Cross Sectional Study