Emerging Infectious Disease ISSN: 1080-6059

Rift Valley Fever during Rainy Seasons, Madagascar, 2008 and 2009

Soa Fy Andriamandimby, Armand Eugène Randrianarivo-Solofoniaina, Elisabeth M. Jeanmaire, Lisette Ravololomanana, Lanto Tiana Razafimanantsoa, Tsanta Rakotojoelinandrasana, Josette Razainirina, Jonathan Hoffmann, Jean-Pierre Ravalohery, Jean-Théophile Rafisandratantsoa, Pierre E. Rollin, and Jean-Marc Reynes¹

Author affiliations: Institut Pasteur, Antananarivo, Madagascar (S.F. Andriamandimby, T. Rakotojoelinandrasana, J. Razainirina, J.Hoffmann, J.-P. Ravalohery, J.-T. Rafisandratantsoa, J.-M. Reynes); Ministère de la Santé et du Planning Familial, Antananarivo (A.E. Randrianarivo-Solofoniaina, L. Ravololomanana); Food and Agriculture Organization, Antananarivo (E.M. Jeanmaire); Ministère de l’Agriculture, d’Elevage et de la Pêche, Antananarivo, (L.T. Razafimanantsoa); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (P.E. Rollin); 1Current affiliation: Centre Pasteur du Cameroun, Yaounde, Cameroon.

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Figure 2

Phylogenetic tree based on the entire small sequences from 33 Rift Valley fever virus strains described by Bird et al. (16), from 6 sequences representative of the Kenya 1, 1a, and 2 lineages described by Bird et al. (18), and from 1 Madagascar strain circulating in 1991 and 12 Madagascar strains circulating in 2008. Boostrap percentages (from 1,000 resamplings) are indicated at each node. ◆ indicates sequences from the 2006–2007 Kenya-1 lineage, ● indicates sequences from the 2006–2007 Kenya-1a

Figure 2. Phylogenetic tree based on the entire small sequences from 33 Rift Valley fever virus strains described by Bird et al. (16), from 6 sequences representative of the Kenya 1, 1a, and 2 lineages described by Bird et al. (18), and from 1 Madagascar strain circulating in 1991 and 12 Madagascar strains circulating in 2008. Boostrap percentages (from 1,000 resamplings) are indicated at each node. ◆ indicates sequences from the 2006–2007 Kenya-1 lineage, ● indicates sequences from the 2006–2007 Kenya-1a lineage, ▲ indicates sequences from the 2006–2007 Kenya 2 lineage, and ◇ indicates the 2008 Madagascar sequences. Scale bar indicates nucleotide substitutions per site.

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