Phylogenetic relationship of MAGV-like isolate OBS6657 to other MAGV and CVV isolates and reference orthobunyaviruses. Maximum-likelihood trees (Jones, Taylor, and Thornton model, gamma-distributed) were constructed on the basis of the amino acid sequences of the nucleoprotein (A), glycoprotein (B), and polymerase (C). Bootstrap values based on 1,000 replicates are indicated for values >60. Sequences generated in this study are shown in red bold. Human isolates within the CVV, MAGV, and Córdoba virus clades are underlined, and the OBS6657 isolate is indicated with a red star. Scale bars indicate nucleotide substitutions per site. CVV, Cache Valley virus; CODV, Córdoba virus; MAGV, Maguari virus.