Increased testing is probably one of the most crucial tools of non-pharmaceutical intervention (NPI) due to substantial asymptomatic transmission in Covid-19. According to the latest estimates, asymptomatic individuals are responsible for transmitting close to 60 per cent of all infections. Therefore, only by ramping up testing capabilities can countries capture wider circles of asymptomatic cases, asymptomatic case contacts and individuals without obvious exposure.
Furthermore, test results prompt individuals to self-isolate, inform health officials about the pandemic state and guide policymakers in their decision to deploy other NPI strategies such as closing/opening schools, various economic sectors, etc.
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