Nigeria has an unusually high number of infertile couples, experts have found. Some of them go to fertility hospitals for in-vitro fertilisation (IVF), a process whereby the female egg is fertilised by sperm outside the body. But the process costs about 7,000 euros which many couples cannot afford. Some of those couples patronise "baby factories", where young girls are kept to give birth to babies who are then sold for about a third of what would have been paid to undergo IVF in a fertility hospital.
