Fig. 2.

Phylogenetic analysis of the complete amino acid sequence of ORF2 of ovine astrovirus type 2 (OAstV-2) strain Hungary/2009 (JN592482). The ORF2 region of a representative of each species belonging to the mammalian and avian astrovirus genera Mamastrovirus and Avastrovirus, respectively, was obtained from GenBank and used as a reference. Any astroviruses detected in sheep are indicated by black arrows. The tree was constructed using the neighbour-joining method implemented in MEGA4. The novel ovine astrovirus is indicated by bold letters. Bootstrap values >50% are shown at the branches