How a Virus Can Go From a Small Number of People to a Global Pandemic

Damon centola is a sociologist at the university of pennsylvania. He has long been fascinated by how things can spread very rapidly. In lateer twenty nineteen damon, a few people got infected with the covit 19 virus in a chinese city. If any one of those people gets on to an aeroplane and travels, say, to televive or to berlin, then that infected person can infect the people around them just by mere proximity.