Figure 1

Maximum likelihood tree of Pr-RT sequences of BF cluster. Names of sequences obtained by us, all collected in Spain, are in bold type. Two-letter ISO code of country of origin of the individual, when known, is in parentheses after the virus name. In database sequences branching in the BF cluster, the country of sample collection is indicated before the virus name with the two-letter ISO country code. In reference sequences, subtype or CRF is indicated before the virus name. Branches corresponding to references of subtypes A, C, F, G, and H are compressed. Only bootstrap values ≥ 80% are shown.