SARS-CoV-2 rapid antigen test positivity correlates well with viral loads typically seen in the infectious period. RATs may be useful tools to discriminate between infectious and non-infectious individuals.
Lateral Flow Devices / RATs show good correlation with low cycle threshold PCR results, and subsequent viral culture, indicating excellent sensitivity for identifying contagious individuals.
The nuance of differences, strengths & indications between direct Macintosh laryngoscopy and various videolaryngoscopes is not easily definable and continues to be open to debate.