Acute hepatopancreatic necrosis disease (AHPND) caused by Vibrio parahaemolyticus (VpAHPND) has been reported in commodity shrimp, but the potential risk of its global spread via frozen shrimp trade is yet to be fully explored. We hypothesized that with AHPND could a source VpAHPND transmission; thus, infectivity was evaluated using bioassay. To prepare infected 12 Penaeus vannamei (average wei...