Assessment of the utility of a screening tool for COVID-19 diagnosis in an accident and emergency department in Lagos, Nigeria: A pilot study.

Unlabelled: The use of reverse transcription-polymerase chain reaction (RT-PCR) is the gold standard laboratory test for diagnosing SARS-CoV-2 infection. However, it has the disadvantage of a long turnaround time and cost. The Nigeria Centre for Disease Control (NCDC) formulated a case definition for COVID-19.