APHIS supported retrospective testing for porcine deltacoronavirus (PDCoV) at three NAHLN laboratories. Overall, 2286 samples were tested for PDCoV. Samples were submitted from 27 known States (there were 68 samples with unknown state where samples were collected). There were sample collection dates between April 9, 2010 (40 samples) to December 21, 2013.
A total of 4 positive samples were detected. Two each from the states of Iowa and Minnesota. Positive samples were collected on August 9, 2013 (3 samples) and October 6, 2013. Three of the positives came from grower/finisher sites and one positive sample came from an unknown operation type.
This is very important information as it assists us in zeroing in on when PDCoV may have arrived in the U.S. Clinical cases started to be submitted to the veterinary diagnostic labs in significant numbers in February 2014.
Wednesday August 13, 2014/ AASV/ United States.