Rift Valley fever outbreak with East-Central African virus lineage in Mauritania, 2003
Autor: | O. Elmamy Bezeid, Mawlouth Diallo, Peinda Ogo Ly, Djibril Diop, Kader Ndiaye, Mbayame Ndiaye Niang, Diawo Diallo, Ousmane Faye, François Simon, Pierre Nabeth, Baidy Lo, Boubacar Diallo, Ousmane M. Diop, Sid Ahmed Ould Mohamed, Hampathé Bâ, Ibrahima Dia |
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Rok vydání: | 2008 |
Předmět: |
Male
Rift Valley Fever Epidemiology Prevalence lcsh:Medicine Antibodies Viral Disease Outbreaks Seroepidemiologic Studies Zoonoses Rift Valley fever Child Phylogeny Goats Mauritania Middle Aged Culex Infectious Diseases RNA Viral Female Microbiology (medical) Adult Lineage (genetic) Adolescent Enzyme-Linked Immunosorbent Assay Biology Virus lcsh:Infectious and parasitic diseases Phylogenetics Genetic variation parasitic diseases medicine Animals Humans emergence lcsh:RC109-216 human mosquitoes Sheep outbreak Research lcsh:R Outbreak Genetic Variation virus lineage biology.organism_classification medicine.disease Rift Valley fever virus Virology Insect Vectors field investigations Immunoglobulin M |
Zdroj: | Emerging Infectious Diseases Emerging Infectious Diseases, Vol 13, Iss 7, Pp 1016-1016 (2007) |
ISSN: | 1080-6040 |
Popis: | Phylogenetic studies demonstrated that outbreak strains belonged to the East-Central African lineage. In October 2003, 9 human cases of hemorrhagic fever were reported in 3 provinces of Mauritania, West Africa. Test results showed acute Rift Valley fever virus (RVFV) infection, and a field investigation found recent circulation of RVFV with a prevalence rate of 25.5% (25/98) and 4 deaths among the 25 laboratory-confirmed case-patients. Immunoglobulin M against RVFV was found in 46% (25/54) of domestic animals. RVFV was also isolated from the mosquito species Culex poicilipes. Genetic comparison of virion segments indicated little variation among the strains isolated. However, phylogenetic studies clearly demonstrated that these strains belonged to the East-Central African lineage for all segments. To our knowledge, this is the first time viruses of this lineage have been observed in an outbreak in West Africa. Whether these strains were introduced or are endemic in West Africa remains to be determined. |
Databáze: | OpenAIRE |
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