Figure 2. Comparative small (S) RNA phylogenetic tree constructed by using the neighbor-joining method for Oropouche virus strains isolated in Parauapebas and Porto de Moz, Pará State, Brazil. Bootstrap values were placed over the 3 nodes for each main group (I, II, and III). Aino virus S RNA sequence was used as an outgroup. Scale bar indicates a divergence of 5% in the nucleotide sequence.