Following the Revolution and the subsequent United States embargo against Cuba, an increase in disease and infant mortality worsened in the 1960s. The new Cuban government stated that universal healthcare would become a priority of state planning. In 1960 revolutionary and physician Che Guevara outlined his aims for the future of Cuban healthcare in an essay entitled "On Revolutionary Medicine", stating: "The work that today is entrusted to the Ministry of Health and similar organizations is to provide public health services for the greatest possible number of persons, institute a program of preventive medicine, and orient the public to the performance of hygienic practices." These aims were hampered almost immediately by an exodus of almost half of Cuba's physicians to the United States, leaving the country with only 3,000 doctors and 16 professors in the University of Havana’s medical college. Beginning in 1960, the Ministry of Public Health began a program of nationalization and regionalization of medical services. In 1965, Cuba became the first Latin American country to legalize abortion.