Daily briefing: Coronavirus could have killed 40 million people if the world had not taken action

Nature, Published online: 31 March 2020; doi:10.1038/d41586-020-00966-w

The COVID-19 pandemic could have infected an estimated 90% of the world’s population and killed 40.6 million people if no mitigation measures were put in place to combat it. Plus: meet the scientists who are redeploying to fight the virus, and what DNA might say about why some people don’t get very ill from COVID-19.