Epidemiology

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

These graphics will guide you through science-based vaccine guidelines for children and adults

In recent years COVID shots joined flu shots as an annual offering at most neighborhood pharmacies. But the current administration has thrown that into uncertainty

Despite the fact that vaccines against COVID have already undergone strict safety reviews and that people continue to die from the disease, Trump’s FDA is moving to reduce access to annual COVID boosters for healthy Americans

Sunshine may hold healing rays for a variety of autoimmune diseases such as multiple sclerosis. Scientists are turning this surprising discovery into treatments