What is the most reliable method to determine positive COVID-19 cases?
RT-PCR to generate cDNA from SARS-CoV-2 RNA extracted from respiratory samples, followed by quantitative PCR (Figure 2 ).96 Common gene targets for SARS-CoV-2 include the envelope, nucleocapsid, spike, RNA-dependent RNA polymerase, and ORF1 genes. It is recommended to include in the analysis, at least, 2 target genes.97