"Hospices: Mothers who could either not care for or did not want their children abandoned them at a hospice. As many as one-fourth to one-half of the illegitimate babies born in Paris each year were taken to a hospice. There was one in each arrondissement(section) in Paris due to the high number of abandoned children. Most women either left their babies at the actual hospice, or gave birth at the hospital and when the police and hospice authorities could not deter the mother from abandoning the child,they signed a form stating they were abandoning their child. From here, the authorities took the baby to the hospice. This was primarily done because abandoning children on the street was illegal. Also, at this time, there was no adoption program established."
This is from a site that is using the work of Victor Hugo "Les Misérables" to talk about some of the social issues of the time. This is a physical abandonment and although they are no more left in hospices babies are still abandoned... at streets, garbages, name it.
There are numerous kinds of abandonment and even at home surrounded by parents and a whole bunch of people some children are not seen, heard even noticed. I don't think I have to say anything else. These are scenes we would no longer want to see but I doubt it will ever end.