Fig. (4) (A, B) The hybridization result from HAS 15 and PA 21, respectively, when the analysis was extended over 3.7 kb from the 5’ end. Clearly HAV strains hybridized to probes from HAV strains only. Strong hybridization to the oligonucleotide probes derived from their respective subgenotype genomes represented on the array indicates the presence of these viruses. (C) Phylogenetic analysis of NoV#186 based on ≈300-bp sequenced PCR amplicon and other sequences from representative NoV strains from GenBank. Phylogenetic tree was plotted by Neighbor-joining method.