A deer tick climbs a blade of tall grass in the woods. It stretches its front legs as far as it can, waiting for a passerby. When a hiker brushes past, the tick clings on. It finds a prime position, ...

In 1997, clouds of smoke hung over the rainforests of Indonesia as an area roughly the size of Pennsylvania was burned to make way for agriculture, the fires exacerbated by drought. Smothered in haze, ...

Measles have surged to a record high, with more cases reported this year than any year since the disease was declared eliminated in the United States in 2000. This disappointing record comes amid ...

Liver disease is any disease that directly affects your liver. Unlike acute liver failure, which happens suddenly, liver disease progresses slowly over time. Some types of liver disease, like ...

Researchers have made great strides to prevent deaths from fatal diseases, but the cures for some of them still elude us. When you purchase through links on our site, we may earn an affiliate ...

Parkinson’s disease is a progressive disorder of later life, defined clinically by motor features (asymmetric bradykinesia, rigidity, tremor, and imbalance) and pathologically by neuronal degeneration ...

Hiking and camping fanatics know all too well the risks of a tick bite. Ticks are tiny but carry mighty illnesses, including Lyme disease. They thrive in heavily wooded areas across the U.S. and ...

Chronic wasting disease has been spreading among deer in the United States, which has raised concerns that the fatal neurological illness might make the leap to people. But a recent study suggests ...

Humans can catch a huge number of diseases from animals, and these can be caused by viruses, bacteria, parasites or fungi. When you purchase through links on our site, we may earn an affiliate ...

Think of your immune system like a hardworking security team: Day and night, with zero breaks, it’s scanning for potentially dangerous intruders. And while you mindlessly scroll your social feeds and ...

Sue Gray, 59, has been sick half her life. But it took two decades to confirm why. When Gray was 30 and living with her then-husband in the middle of the woods in upstate New York, she felt a tick on ...

Biodiversity loss, global warming, pollution and the spread of invasive species are making infectious diseases more dangerous to organisms around the world. By Emily Anthes Several large-scale, ...