Social distancing is exactly what it sounds like -- putting some distance between yourself and others, and avoiding situations where you might be close to many other people.
To this end, countries across Asia have suspended schools, canceled public gatherings such as Lunar New Year festivities, closed public spaces like swimming pools, and recommended people work from home.
In China, more than 780 million people -- about half the country's population -- are still under some form of travel restrictions, as part of the effort to limit people's exposure to each other.
We're already starting to see some of these social distancing measures come into effect in big cities across Europe, where the outbreak began in Italy in mid-February.
More than 100 schools have closed in France's Oise region, affecting more than 28,000 students. The Louvre museum in Paris and the famed La Scala opera house in Milan have both closed, and the Paris half-marathon has been canceled.