International
In the absence of a COVID-19 vaccine for children, US researchers say identifying presymptomatic and asymptomatic infection in kids is crucial to stopping COVID-19. Using a simulation of COVID-19 transmission they found that identifying 10 to 20 per cent of silent infections among children within 3 days after infection would bring attack rates below 5 per cent, even if only adults were vaccinated. The authors say that without measures to interrupt transmission chains from these silent infections in kids, vaccination of adults is unlikely to contain the outbreaks in the near term.
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