Finally, our study demonstrates the broad applicability of using panviral microarray-based diagnostics. Even though PCR diagnostics are well developed for WNV, the agent was not initially considered as a potential pathogen in this species. Panviral microarray can be used not only to identify novel viruses but also to detect unsuspected agents. Emerging Infectious Diseases • www.cdc.gov/eid • Vol. 17, No. 8, August 2011  Outbreak of Porcine Epidemic Diarrhea in Suckling Piglets, China  the genera Eptesicus and Rhinolophus in South Korea. However, nucleotide sequencing showed the presence of prototypical Hantaan virus indicating a spillover infection or laboratory contamination (7) .