Table 2

Approach 1: sensitivity of AbC-19 Rapid Test based on samples from 268 people with previous positive polymerase chain reaction test (“WHO confirmed” category: “known positives”)

Time since symptom onsetTrue positivesFalse negativesTotal known positivesSensitivity, % (95% CI)
All2482026892.5 (88.8 to 95.1)
Asymptomatic751258.3 (32.0 to 80.7)
All symptomatic2411525694.1 (90.6 to 96.4)
8-21 days505100 (56.6 to 100.0)
22-35 days1912095.0 (76.4 to 99.7)
36-70 days136614295.8 (91.1 to 98.0)
≥71 days8188991.0 (83.3 to 95.4)
All after retests*2511726893.7 (90.1 to 96.0)
  • * Only subset of samples retested: see main text for details.