More than three-quarters of Massachusett's confirmed coronavirus cases are linked to just one biotech conference in a Boston hotel. The “superspreading” phenomenon is familiar from past epidemics but still little understood. commonhealth
in 2011 that appeared to stem from one patient's stint in the Montreal airport.
"The question arises," he says,"when we see a superspreading episode like this episode at Biogen appears to be, what's the cause of it? Is it just chance? Or is it something to do with the particular circumstances?""We certainly think biology plays a role," says Dr. Ashish Jha, a professor of health policy at the Harvard Chan School of Public Health."Some people end up having a very high viral load and then they shed a lot more virus than other people.
"Maybe they have a lung disease, for example," he says."And so they're doing more coughing anyway. And so compared to a person who doesn't cough, they transmit it more."
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