Figure. Phylogenetic analysis of (A) complete nonstructural (NS) and (B) viral protein (VP) 1/VP 2 gene sequences of human parvovirus 4 (PARV4) variants isolated from patients with encephalitis of unknown etiology using 167 available sequences from human PARV4 variants (genotypes 1–3). Blue, study sample; red, genotype 1; orange, genotype 2; yellow, genotype 3. The porcine hokovirus sequence (GenBank accession no. EU200671) was used as an outgroup (not shown). The trees were constructed by neighbor-joining of pairwise maximum-composite likelihood corrected distances between nucleotide sequences; bootstrap values ≈70% are shown. Scale bars represent an evolutionary distance of 0.05.