1st, SARS-CoV2 ELISA already exists. 2nd, the CDC did compare RT-PCR vs ELISA SARS-CoV back in 2005, and ELISA performed really poorly, and that was for acute c

1st, SARS-CoV2 ELISA already exists. 2nd, the CDC did compare RT-PCR vs ELISA SARS-CoV back in 2005, and ELISA performed really poorly, and that was for acute cases. So, that is why we should stick with RT.