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Relative proportion of ECoV qPCR‐positive (black) and qPCR‐negative (white) samples by states submitted from January 2012 to February 2015 to 3 commercial veterinary diagnostic laboratories in the USA (IDEXX Laboratories, Inc., West Sacramento; Animal Health Diagnostic Center, Cornell University, Ithaca; Real‐time PCR Research and Diagnostics Core Facility, University of California, Davis).
