Definition: A pathogen is a biological agent – such as a bacterium, virus, fungus, parasite or prion – that can cause disease in a host organism. In simple terms: a pathogen is an infectious microbe ...

T cells are some of the immune system's most important warriors. They can stop tumor growth and even fight off severe ...

As the initial measles outbreak in Texas and New Mexico has grown and spread to 607 people in 22 states, many people, and especially parents have been worried about the long-term health effects of ...

Measles isn’t just a rash and a fever. The disease outbreak in West Texas that continues to grow has sent 29 people, most of them small children, to the hospital. Two people have died, including a ...

It typically causes an upper respiratory infection that ranges from mild to severe. Although the measles, mumps and rubella (MMR) vaccine is very effective at controlling the disease, dropping ...

New research reveals how measles infection disrupts immune memory and increases vulnerability to other infections, reinforcing why high vaccination coverage remains critical to preventing outbreaks ...