The science of superspreading
▻http://vis.sciencemag.org/covid-clusters
If you find out someone has #COVID-19, you can trace their contacts and test or quarantine them. But there is a high likelihood they didn’t infect a single other person.
However, there is a high likelihood that person became infected at a superspreading event.That’s why contact tracers in some countries now spend more time understanding where someone was infected and finding other people from the same cluster.
This is called backward contact tracing. It can help find more chains of #transmission.
Backward contact tracing also helps scientists better understand where superspreading events happen. That may help prevent more such events in the future.
