". . . it illustrates that we are all connected "

From the Boston Globe (possible paywall protection): When Biogen held its meeting of the firm's international leaders in a Boston hotel in February, they apparently had no idea it would be a super-spreader event. Attendees congregated in meeting rooms, on escalators and in elevators, at cocktail receptions and meals. Masks and social distancing weren't much of a thing back then. Current estimates of the number of coronavirus infections in four easter Massachusetts counties that are traceable to that two-day event: 20,000. And that number could be too conservative an estimate.

The "connected" quote is in reference to the spread from the tony Marriott Long Wharf hotel to at least "122 people living in Boston-area homeless shelters and employees who work there, the study says. It’s unclear what path the virus took to get there."

Lesson learned? Not necessarily, as illustrated by last week's decision by a number of universities to cancel the return to on-campus classes after clusters of infections broke out among undergraduates (Inside Higher Ed, 8/25/20).