Pope Francis signed the decree for Blessed Teresa's cause and advanced three other sainthood causes Dec. 17, the Vatican announced.
Although the date for the canonization ceremony will be officially announced during the next consistory of cardinals in February, Archbishop Rino Fisichella, president of the Vatican office organizing the Holy Year of Mercy events, had said it would be Sept. 4. That date celebrates the Jubilee of workers and volunteers of mercy and comes the day before the 19th anniversary of her death, Sept. 5, 1997.
The postulator for her sainthood cause, Father Brian Kolodiejchuk of the Missionaries of Charity, said the second miracle that was approved involved the healing of a now 42-year-old mechanical engineer in Santos, Brazil.
Doctors diagnosed the man with a viral brain infection that resulted in multiple brain abscesses, the priest said in a statement published Dec. 18 by AsiaNews, the Rome-based missionary news agency. Treatments given were ineffective and the man went into a coma, the postulator wrote.
The then-newly married man's wife had spent months praying to Blessed Teresa and her prayers were joined by those of her relatives and friends when her dying husband was taken to the operating room Dec. 9, 2008.
When the surgeon entered the operating room, he reported that he found the patient awake, free of pain and asking, "What am I doing here?" Doctors reported the man showed no more symptoms and a Vatican medical commission voted unanimously in September 2015 that the healing was inexplicable.
St. John Paul II had made an exception to the usual canonization process in Mother Teresa's case by allowing her sainthood cause to be opened without waiting the usual five years after a candidate's death. He beatified her in 2003.
The order she started -- the Missionaries of Charity -- continues its outreach to the "poorest of the poor."
Among the other decrees approved Dec. 17, the Pope recognized the heroic virtues of Comboni Father Giuseppe Ambrosoli, an Italian surgeon, priest and missionary who dedicated his life to caring for people in Uganda, where he also founded a hospital and midwifery school before his death in 1987. His father ran the highly successful Ambrosoli honey company.
The Pope also recognized the heroic virtues of De La Salle Brother Leonardo Lanzuela Martinez of Spain (1894-1976) and Heinrich Hahn, a German surgeon.
Born in 1800, the lay Catholic doctor was the father of 10 children and dedicated much of his activity to providing medical care to the poor. He was also involved in public service, even serving in the German parliament. He founded the St. Francis Xavier Mission Society in Germany and the "Giuseppino" Institute for those suffering from incurable illnesses. He died in 1882.