Epidemiology

A report finds that death rates from cancer and heart disease have declined since 2010 in roughly 150 countries. Experts explain potential reasons why

A child in Los Angeles County has died from a rare but always fatal brain disorder that develops years after a measles infection. Experts underscore the need for vaccination to protect the most vulnerable

A single tick bite can trigger a bizarre meat allergy—here’s how alpha-gal syndrome is reshaping people’s diets.

AI now scans for bird flu and measles news, but public health officials say outbreaks can go undetected as the U.S. guts national and global tracking

Many questions still surround COVID vaccine access this fall, but here’s what we know so far

Texas may have declared its measles outbreak over, but rising cases elsewhere and the return to school mean it could easily resurge

One-off cases of malaria in the U.S. may become more common as warming temperatures lead to booming mosquito populations

An ongoing civil war in Sudan has forced millions of people to flee their homes and move to camps, where a lack of water and sanitation infrastructure, along with heavy rains, are fueling a massive cholera outbreak. What role does the environment play in how the outbreak is spreading?

Fifty-eight people have been infected—and two have died—in a New York City outbreak of Legionnaires’ disease—a severe type of pneumonia caused by a bacterium commonly associated with air-conditioning systems and cooling towers

A person in Arizona recently died of pneumonic plague—a rare and severe form of the disease. An expert explains how the bacteria that spurred the Black Death centuries ago continues to claim lives

Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts warn that it hasn’t disappeared

The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another question