Rapid differential diagnosis of the B.1.617.2 (delta) variant of SARS-CoV-2 using an automated Cas12a–microfluidic system

An automated Cas12a-microfluidic system was constructed to distinguish the B.1.617.2 (delta) variant of SARS-CoV-2 from the wild-type virus rapidly and was validated using 30 clinical samples, showing 100% consistency with next-generation sequencing. It will be a potential tool for the rapid differential diagnosis of the delta variant of SARS-CoV-2.