Objectives
To assess the diagnostic accuracy of signs and symptoms to determine if a person presenting in primary care or to hospital outpatient settings, such as the emergency department or dedicated COVID‐19 clinics, has COVID‐19 disease or COVID‐19 pneumonia.

Secondary objectives
Where data are available, we will investigate diagnostic accuracy (either by stratified analysis or meta‐regression) according to:
days since symptom onset, population (children; older adults), reference standard, study design, setting, severity of COVID‐19 pneumonia (severe COVID‐19 pneumonia/ARDS requiring intensive care support).