Rift Valley fever during rainy seasons, Madagascar, 2008 and 2009.
During 2 successive rainy seasons, January 2008 through May 2008 and November 2008 through March 2009, Rift Valley fever virus (RVFV) caused outbreaks in Madagascar. Human and animal infections were confirmed on the northern and southern coasts and in the central highlands. Analysis of partial sequences from RVFV strains showed that all were similar to the strains circulating in Kenya during 2006-2007. A national cross-sectional serologic survey among slaughterhouse workers at high risk showed that RVFV circulation during the 2008 outbreaks included all of the Malagasy regions and that the virus has circulated in at least 92 of Madagascar's 111 districts. To better predict and respond to RVF outbreaks in Madagascar, further epidemiologic studies are needed, such as RVFV complete genome analysis, ruminant movement mapping, and surveillance implementation.
Andriamandimby
Soa Fy
SF
Institut Pasteur, Antananarivo, Madagascar.
Randrianarivo-Solofoniaina
Armand Eugène
AE
Jeanmaire
Elisabeth M
EM
Ravololomanana
Lisette
L
Razafimanantsoa
Lanto Tiana
LT
Rakotojoelinandrasana
Tsanta
T
Razainirina
Josette
J
Hoffmann
Jonathan
J
Ravalohery
Jean-Pierre
JP
Rafisandratantsoa
Jean-Théophile
JT
Rollin
Pierre E
PE
Reynes
Jean-Marc
JM
D000330:Aedes; D000818:Animals; D002417:Cattle; D002522:Chlorocebus aethiops; D003430:Cross-Sectional Studies; D004196:Disease Outbreaks; D014644:Genetic Variation; D016679:Genome, Viral; D006041:Goats; D006801:Humans; D008270:Madagascar / Q000453:epidemiology; D010802:Phylogeny; D012367:RNA, Viral / Q000235:genetics / Q000302:isolation & purification; D011891:Rain; D012295:Rift Valley Fever / Q000453:epidemiology* / Q000821:virology; D012296:Rift Valley fever virus / Q000235:genetics*; D012621:Seasons; D017423:Sequence Analysis, RNA; D012756:Sheep; D013997:Time Factors; D014709:Vero Cells
D012367:RNA, Viral