Biomarker(4) disease severity(4) COVID-19(4) significantly(3) coronavirus(3) POC test result(3) Viral load(3) security(3) test result(3) 95% confidence interval(3) positive(3) detect(3) public health(3) recorded(3) sensitivity(3) symptomatic patient(3) Rapid(3) patients(3) 95% CI(3) POC tests(3) tested(3) evaluated(3) SARS-COV-2 infection(3) SARS-CoV-2 positive patient(3) symptomatic(3) reverse transcription PCR(3) confidence interval(3) COVID-19 infections(3) SARS-CoV-2 positive patients(3) evaluate(3)