I came across such an article: "Have you ever thought why babies in the arms of beggars always asleep?"
I think this is a common problem in developing countries where social welfare is low and law enforcement is not strict. In Cambodia, especially Phnom Penh, we always see women carrying babies begging for money. However, most people know that the babies are not those women's children.
The article further clarify one thing "Have you ever thought why babies in the arms of beggars always asleep?". This is true but not always true. The article says that there is a mafia like organisation, those beggars are "employees" while the babies are the "tool" for them to work. If the babies stay awake all days, they will cry and beggars will get frustrated. So they feed the babies with wine (vodka) or drug. This sometime kills the babies but the beggars will continue to carry the bodies of the babies until they "log off" because a mother carrying body of a baby will gain more sympathy from people.