FIG. 3.

Phylogenetic tree constructed with RdRp gene sequences (422 nt) amplified by an RT-PCR screening assay. Sequences of 77 bat astroviruses (BatAstVs) and other respective sequences of different astroviruses isolated from human (HAstV types 1, 2, 4, 5, and 8), mink (MAstV), ovine (OAstV), and turkey type 1 (TAstV-1) viruses were included and aligned based on the nucleotide sequences. For the bat specimens collected during the phase 2 longitudinal study, the sampling dates are indicated in parentheses on the right according to the following code: 1, June 2005; 2, August 2005; 3, December 2005; 4, March 2006.