Thread by @DrDenaGrayson

⚠️Scientists estimate that "superspreaders" may account for most #coronavirus cases: “Probably ~10% of cases lead to 80% of the spread," and the virus may need to be introduced into a country 4 times to have an even chance of establishing itself.

sciencemag.org/news/2020/05/w…

Multiple “superspreading events” have occurred in the #CoronavirusPandemic:

▶️61 cases in a #WA choir
▶️800 cases in a Singapore dorm
▶️80 cases at a music venue in #Japan
▶️Ships, nursing homes, meatpacking plants, ski resorts, churches, restaurants, hospitals, and prisons

Superspreading events are ill-understood and difficult to study, but there is a much higher risk in enclosed spaces than outside. Outside the #Wuhan region in #China, there were 318 clusters of ≥3 cases btwn 4 JAN and 11 FEB: only 1 originated outdoors.💥

https://twitter.com/DrDenaGrayson/status/1266113940477677570?s=20