Tuesday, 6 October 2020
quote [ Japan thus carried out a cluster-busting approach, including undertaking aggressive backward tracing to uncover clusters. Japan also focused on ventilation, counseling its population to avoid places where the three C’s come together—crowds in closed spaces in close contact, especially if there’s talking or singing—bringing together the science of overdispersion with the recognition of airborne aerosol transmission, as well as presymptomatic and asymptomatic transmission. ]
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The gist is that the reproduction number might not be the best metric for the spread, as it lags on clustered outbreaks and that instead of tracing current contacts, backtracking clusters seems a more efficient measure.