CdSe/ZnS quantum dot-labeled antibody fluorescent immunoassay strip for swine acute diarrhea syndrome coronavirus S1 protein detection

per mL. No cross-reactions were observed with three common porcine enteric coronaviruses, namely porcine epidemic diarrhea virus (PEDV), transmissible gastroenteritis virus (TGEV), and porcine deltacoronavirus (PDCoV). Moreover, in the detection of newborn piglets' fecal clinical samples, the results of the test strip were highly consistent with those of quantitative fluorescent PCR. The results indicate that the detection method established in this study can be used for the rapid screening and diagnosis of SADS-CoV infection in pig herds.