Study of New York City rats shows they carry 6,500 different species of fleas, lice and mites.
Investigations on into accidental release of pathogen from Tulane National Primate Research Center in Louisiana.
High diversity of flu viruses and low vaccine protection reasons for concern.
Rare Disease Day is observed on 28 February 2015 to raise awareness and understanding of conditions
Enchroma CX colour blind correction sunglasses trick the brain into seeing correct colours
Tetrandrine from herb shown to prevent Ebola in mice and in human tissue cultures.
Italian surgeon plans to use head transplants to help people with muscle and nerve degeneration.
Delayed reporting and complications from other diseases are causing most deaths, the ministry says.
Outreach efforts by survivors' association behind the 'zero Ebola case' story in Port Loko 'hot spot'.
Daily HIV pill prevents transmission among gay men, study finds.
Eating Disorder Awareness Week 2015 raises awareness of eating disorders from 23 February to 1 March.
Three men were trained to use their brain's electrical signals to move nerve-contacting prosthetic bionic hands
House of Lords votes to allow Britain to become first country to allow '3-parent' babies
Robear has strong mechanical arms that can lift up to 80kg of weight gently without jolting patients.
Watch the moment Allen Zderad sees his wife for the first time in a decade using a bionic eye.