We have witnessed radical changes in infrastructure of health services as well as pattern of utilisation of care over the years in most of the transitional economies of Asia, Africa, and Latin America. The present paper recognises the existence of two different classes of service providers in the health sector: public and private, measures activities in these two sectors by looking at the utilisation rates of different health care services, and examines how different factors in the demand and supply sides economics of health care contribute to the changing scenario of the health sectors in India, Brazil, and South Afric