DDX17 and COVID-19: As errors cannot be avoided, we have a preliminary suggestion that international or national ASFV reference laboratories should be able to provide a common porcine p72-Ab standard to facilitate the calibration of all p72-Ab quantification assays, as in the case of COVID-19, etc. Moreover, it is possible to establish a multiplexed immunoassay to sequentially detect two different indicators in a single run, based on the flash and grow type of chemiluminescent reaction (59) or to quantify multiple antibodies using an automated chemiluminescent detection system (60).