The cold sore-causing herpes simplex virus, HSV-1, is extremely common with an estimated 3.7 billion people already infected with it.
The man's caregiver has told him that people are clapping from their windows due to his musical performance.
Researchers investigated the link between junk foods, ageing and markers of Alzheimer's disease in the brain.
For a century, scientists have relied on a fundamental assumption about the brain's neurons. New research shows it's wrong.
Roundworms can protect themselves in the same way human neurons can.