Fig. 3: Lessons learned from COVID-19.
From: Lateral flow test engineering and lessons learned from COVID-19
a, The map shows the global distribution of regions in which a COVID-19 self-testing policy was in place, was being considered or was being piloted as of March 2022, adapted from the World Health Organization (WHO)7. b, Rapid adoption of lateral flow tests (LFTs) in England, following their introduction in 2021, surpassing polymerase chain reaction (PCR) use. Data from the UK Coronavirus Dashboard26. c, LFT sensitivity in comparison to PCR. LFT sensitivity aligns with the infectious period of COVID-19 and can detect COVID-19 one to two days after PCR can. The low-cost, portable and rapid format of LFTs allows more frequent testing.
