Egypt suffers from the highest rate of hepatitis C infections in the world. In the 1960s and 1970s, a vaccination campaign against a parasite went drastically wrong.
Afghanistan's security crisis is seeing increasing numbers of people fleeing the country. Many of them are little more than children and end up sleeping rough in Paris, hoping for a chance of a brighter future.
To help children growing up in Rio de Janeiro's shanty towns escape the culture of gang-related violence, the Criança Esperança project provides alternative education and cultural pursuits.