A health worker extracts a worm from a child's leg as Samuel Makoy Yibi, the national co-ordinator for the Guinea Worm Eradication Programme in South Sudan, assists.
A volunteer in Nigeria inspects a Guinea worm emerging from a man's calf. Guinea worm is on track to become the second human disease, and the first parasitic infection, to be eradicated as cases hit an all-time low.
Guinea worms are thin, thread-like parasites. Inside the human body, they can grow up to one metre before emerging through the skin.
A woman in Nigeria filters drinking water using a simple cloth filter. Nigeria, previously the world’s most endemic country, reported its last case of Guinea worm disease in 2008.
A woman uses flip charts to show schoolchildren how Guinea worm disease is contracted, and what they must do to prevent it. Last year, the UAE pledged $10 million to help fight the disease.
Former US president Jimmy Carter comforts a child who is being treated for Guinea worm disease. A non-profit he founded, The Carter Centre, has been on a mission to wipe out the disease.