Fewer children would develop infections in intensive care if the plastic tubes used to deliver drugs straight into their veins were coated in antibiotics, a study in The Lancet suggests.

Inhaling laughing gas - nitrous oxide - after a traumatic event could help prevent distressing memories from "sticking" in the brain, research suggests.

A Zika vaccine could be ready for human trials in the summer, according to the man in charge of the US government's research programme.

Zika virus kills the type of tissue found in the developing brain, researchers have shown.

Darek Fidyka, who was paralysed from the chest down after a knife attack in 2010, can now ride an adapted tricycle.