We have also demonstrated that it is possible to distinguish between CVB and CVA strains by virtue of their hybridization profiles. In addition, individual members of A and B groups show distinct and characteristic hybridization patterns. Thus, members of CVA strains such as A3 and A5 can be easily identified not only as belonging to group A CV, but also a genotype A3 or A5. More virus strains need to be examined to determine if the method is applicable to other members of this group.