Simple blood test could tell if you’re going to be struck down with dementia in the next five years, experts say Patients have suffered brain damage when first symptoms of dementia appear But scientists...

The World Health Organization’s top official in Europe warned Thursday that the coronavirus is a “tornado with a long tail” and said rising case counts among young people could ultimately...

The virus that causes COVID-19 probably originated in wild bats that live in caves around Wuhan, China, and may have been passed to a second animal species before infecting people, according to the World...