PHC analyzed the reasons for health improvements beyond the technical biomedical intervention paradigm. It argued that other factors were equally important determinants. PHC in 1978 was underpinned by the concept of social justice and identified the main principles of equity and social justice as key to health improvements. It also highlighted the role of prevention, multisectoral collaboration, appropriate technology and sustainability. The need to improve the lot of those living in abject poverty was a major emphasis. PHC was a statement of values as much as a strategy for health care. The present call to "revitalize" PHC is to once again bring these values "to life; to animate" them [
3].
It can be argued, however, that PHC in the global context of health care and health needs more than revitalization. It is necessary to re-"frame or shape" [
3] PHC so that these principles can be translated from rhetoric into reality. The struggle to put policy to practice in PHC can be seen in the debate between Comprehensive and Selective PHC. The former argued that health improvements including those related to major diseases needed to be addressed in a context where health care delivery takes account of the principles and approaches described above. The latter argued to achieve PHC, it was necessary to focus on disease control targeting on diseases, which were more prevalent in terms of morbidity and mortality, and were cost effective [
4].
The debate continues today. Comprehensive PHC has shown some remarkable successes, although it has not been a history of smooth progression. Notable examples of good programs have been seen in the NGO (non-government organizations) sector. These programs are often small scale projects run by charismatic leaders. Illustrations include Jamkhed in India which became a model for comprehensive PHC. It provided evidence of the value of Community Health Workers (CHWs) and a community development approach to health. Other examples can be found in the book by Taylor-Ide and Taylor [
5].
On a national scale evidence is more restricted. The world's two most populated countries returned to PHC principles to address the health needs of the poor. China was the country that inspired PHC thinking through its attention to rural health care and the use of local people called "barefoot doctors" (CHWs) to give first line health care. After a period of market oriented reforms in health care and the resulting deterioration of the health of rural people who are the nation's population, China is now committing huge additional resources to revitalising rural networks based on PHC [
6]. India, which was one of the first countries to create a national community health worker scheme after the Alma Ata conference and subsequently saw the scheme disappear within 10 years, has now begun to revive the program in the context of the National Rural Health Mission [
7]. Thailand having adopted a "Basic Needs" approach in the 1970s established a health system based on an alliance between, government and NGOs that integrated PHC programs into other development programs. This alliance has produced both better health and economic improvements [
8].
The year 2008 celebrated 30 years of PHC policy. Two major reports, the World Health Report 2008 [
9] and the Report of the Commission on the Social Determinants of Health from WHO [
10] provided key contributions to this celebration. Both reaffirmed the relevance of PHC in terms of its vision and values in today's world. In addition, a number of articles in the special issue of The Lancet [
11] and in the Global Social Health Policy Forum written by public health researchers and activists summarise the influence of PHC on health policy [
12]. However, at the risk of an understatement, the world has changed radically since 1978. The world in 2008, can be broadly described as one characterised by globalisation, rapid communication and an increasing gap between rich and poor. In the context of health and health care it can be described as one which has seen a shift from major concerns about communicable diseases to chronic diseases (from targeted single interventions to concerns about environment, life style and behaviour); ideological changes (as dictated by neoliberal economics and new public management) along with dominance of Bretton Woods institutions over the UN organisations resulted in developing countries embracing market oriented health sector reforms [
13]; and a shift from medical professional monopoly on decisions and resource allocation to a much wider role for lay people [
14]. This situation presents large challenges and demands serious rethinking about the PHC vision.