A viral disease is any condition that’s caused by a virus. There are several types of viral disease, depending on the underlying virus. We’ll go over some of the main types, including how they ...

Powassan virus can also cause severe disease, including encephalitis or meningitis, or infection of membranes around the brain and spinal cord. These symptoms can include confusion, ...

Australian man dies from rare infection caused by ‘rabies-like’ bat virus - Fatality is only the fourth case ever recorded in ...

Vector-borne diseases make up more than 17% of all infectious diseases caused by bacteria, viruses, and parasites. There are 249 million cases of malaria reported worldwide, which lead to more ...

Deadly viruses throughout history From the Ebola to COVID-19, diseases caused by viruses have killed humans throughout history. Viruses are much older than human beings, possibly even older than ...

Liver disease (hepatic disease) is any disease that negatively affects the normal, healthy performance of the liver. Learn more about types of liver problems and their causes at WebMD.

The CDC finds that leishmaniasis, a skin disease spread by sand flies, is spreading at low levels in the southern U.S. It was previously considered a tropical disease only be acquired abroad.

Bleeding eye disease: An outbreak of deadly Marburg virus disease (MVD), often referred to as the 'bleeding eye virus', has killed at least 15 people, and infected at least 66 in Rwanda as of ...

A tick-borne parasitic disease has claimed new ground in the Northeast, having been announced as being "endemic" in three more states. According to a Morbidity and Mortality Weekly Report ...