We can pray for it, but as what the bibles says ''Whatever a man sows, that’s what he reaps''(Galatians 6:7-8).
God warns us about the impact of men's wrong doing. But did men listen? All men wanted was to do anything they want even if its out of the commandment (abomination, prostitution, adultery). There's a consequence in sinful things we do. There is a difference between the guilty and the innocent. Babies are innocent from the wrong doings of its roots. However, God loves us, he is a forgivable, if only humans repent and change the wrong doings we do, then probably no more innocent babies will be affected of aids. It is really sad that these things happened but its up to us humans to change for the better.