Viral genus classification and specific virus identification. Hybridization and identification results for seven test viral samples. The probes eligible for identity determination were prescreened using the hybridization intensity criteria described in the Methods section. (A) Viral genus determination for the seven viral samples, all of which belong to three viral genera. The genus signal strength is defined in the Methods section. (B) Determination of the identities of specific viruses. The numbers on the Y-axis are the ID numbers of the virus targets as listed in Additional File 2. Note that there are 46 species-specific probes for 26 viruses in the flavivirus and coronavirus genera, and that there are no enterovirus-specific probes.