Two molecules found in various plants, including one extracted from birch, could prevent viruses as formidable as HIV, Ebola, ...

The virus, spread by ticks, can cause a disease that leads to swelling of the brain and permanent health problems in half of severe cases.

This and other mosquito-borne illnesses are on the rise globally and are spreading to more northern locations. Health officials sound alarm as dangerous mosquito-borne disease is discovered in major ...