A vaccine against the deadly Ebola virus has led to 100% protection in a pioneering trial described as a "potential game-changer".
HIV can be flushed out of its hiding places in the body using a cancer drug, researchers show.
Canadian health authorities have approved the drug RU-486, commonly known as the abortion pill.
Ebola deaths have fallen in West Africa - but that doesn't mean that the hard work is done
How speaking out can save lives
Pros and cons of using first licensed malaria vaccine
How has IVF changed since the first 'test-tube baby'
Moving legacy of Ebola worker who died saving children
Michael Mosley on how to reduce cholesterol
The world's first malaria vaccine has cleared one of the final regulatory hurdles prior to being used to immunise children in sub-Saharan Africa.