MADRID — Spain’s Health Minister Salvador Illa says the government hopes to vaccinate between 15 and 20 million people by next May or June.

The government had said it planned to vaccinate 2.5 million between residents and health workers in elderly care homes, first line health workers and disabled or dependent groups in the first three months.

It hopes to begin vaccinating next month and receive more than 140 million vaccine doses in all.

Prime Minister Pedro Sánchez said that in a third phase, the rest of Spain’s 47 million population would get vaccines. The vaccines will be free and voluntary.

Meanwhile, Spain’s Sociological Research Center issued a poll saying 55% of Spaniards would wait and see the effects of the vaccines before getting them. It said 8% would not take the vaccine.