Fig. (1) Dendrogram showing the grouping of HAV strains based on their genetic relatedness for developing viral probe sequences to be used for oligonucleotide design. HAV strains are identified by their GenBank accession number and their respective complete sequences were used to generate the dendrogram. Brackets encompass strain sequences selected to derive a group consensus sequence while arrows identify group individual (i.e. non-consensus) strain sequences for probe set development. Group sequences are designated by numbers 1-5 followed by the probe set identifier (within parentheses), and the genotype (I or II) and subgenotype (a or b) designation.