For a spiky sphere just 120 nanometers wide, the coronavirus can be a remarkably cosmopolitan traveler.

Spewed from the nose or mouth, it can rocket across a room and splatter onto surfaces; it can waft into poorly ventilated spaces and linger in the air for hours. At its most intrepid, the virus can spread from a single individual to dozens of others, perhaps even a hundred or more at once, proliferating through packed crowds in what is called a superspreading event.

Such scenarios, which have been traced to call centers, meat processing facilities, weddingsand more, have helped propel a pandemic that, in the span of eight months, has reached nearly every corner of …continued .
[Source: New York Times]