Mother Teresa is known for having loved beggars, prostitutes and street children without discrimination or distinction.
Marcilio Andrino is convinced she also loved him — and interceded with God to cure him of a viral brain infection when doctors had given him little chance of survival.
Andrino's cure, declared a miracle by Pope Francis earlier this year, was the final step needed to declare Mother Teresa a saint.
She will be canonised by Francis on Sunday in St Peter's Square in the highlight of his Holy Year of Mercy, a year-long emphasis on the merciful side of the Catholic Church.
