Geographies in Depth
This bacteria kills half a million people a year and you've probably never heard of it
Strep A is among the deadliest pathogens in the world – yet we’ve never prioritised making a vaccine.
Emily Sohn is a freelance journalist who writes primarily about health, science and complex conservation questions. Her stories have appeared in the Washington Post, Nature, NPR, bioGraphic, Science News, Spectrum, the Guardian and many other publications.