When we say a meme goes “viral,” we aren't actually saying it's making people sick. But the math behind a meme’s spread suggests it's actually a pretty spot-on analogy.

Pandemics are one of the greatest existential threats facing humanity today. Over the last few centuries, we've seen outbreaks and epidemics kill millions of people. From plague in the 14th century to influenza in the 20th century,...

The world stands on the edge of a flu pandemic, according to the world’s leading experts. The results, they predict, will be catastrophic. Millions of deaths, economies and civil society in chaos, political life undermined or destroyed....

At the 2020 WSJ Health Forum, Reporter Anna Mathews spoke to Nancy-Ann Deparle, former director of The White House Office of Health Reform, and Dr. Scott Gottlieb, former U.S. commissioner of Food & Drugs, on where healthcare policy is...