The entire process usually takes several decades. The honor is given to those who offered contributions to theology, that still remain relevant regardless of time.
The Church has 34 doctors of which only three are women. They include St. Teresa of Avila, St. Catherine of Siena and St. Therese of Lisieux.
The next Doctor of the Church is Spaniard San Juan de Avila. The pope made the announcement during World Youth Day in Madrid.