Public Health

U.S. officials have traced an explosive-diarrhea-causing parasite outbreak in five states to shredded lettuce served at this popular fast-food chain

Case numbers of this parasite-caused illness have exploded in the last week. An expert explains how to try and stay safe

The White House nominated Erica Schwartz, a former deputy surgeon general, to head the nation’s top public health agency

Smoke from northern Minnesota and western Ontario wildfires is pouring over the Great Lakes, mid-Atlantic and Northeast, bringing record levels of hazardous air pollution to major cities

Alpha-gal syndrome is increasing across the U.S., driven by lone star ticks

A proposed rule change could expose more Americans to higher doses of radiation from nuclear facilities

Cyclosporiasis case numbers have skyrocketed from several dozen nationwide in June to now more than 1,000 in the state of Michigan alone

The U.S. Preventive Services Task Force is an independent group that offers guidance on what health screenings and medications health insurance should cover

A heat wave over the Fourth of July weekend could put millions at risk of heat-related illnesses. Here’s what to do to stay safe—and why you don’t just need to drink lots of water

The toxin behind two outbreaks in seven months is hard to find—and just a handful of labs are equipped to look for it at all

Knowing what kind of tick bit you and where you got it can help inform next steps

What’s going on with the Ebola outbreak, how the World Cup is dealing with rising temperatures, and how becoming a father can change your brain