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For a decade, state and federal agencies have worked jointly with communities throughout the USA, with the objective of measuring the health-risk from lead pollution in residential zones. Often these communities have been linked with facilities previously associated with activities like mining and metallurgy; nevertheless, there are other industries like paint manufacturing and battery recycling, that have also been identified as lead pollution sources. The vast experience in cleaning up the contaminated sites has shown that ample programs designed to identify and handle the exposure routes can help, in an effective manner, to diminish blood lead levels (BLL) in susceptible populations, such as in young children. Environmental intervention programs are more effective when the affected communities carry out health education/intervention programs, geared towards the development of individualized strategies for handling the risk implied by the presence of lead in the atmosphere. The English version of this paper is available at: http://www.insp.mx/salud/index.html.

Lead regulations and standards have resulted in a lower exposure to lead in the general population of the United States of America. This paper highlights some of the know-how developed through lead-containing experiences, particularly regarding lead content in air and water. The availability of a solid and clear scientific knowledge is central to the success of these policies. Collateral effects of some air-related standards show the extent to which problem-oriented efforts may be beneficial in other areas, inasmuch as they may have untoward consequences if careful planning and evaluation are not considered. Finally, this paper presents a discussion of the differences between centralized and decentralized approaches to lead exposure control. The English version of this paper is available at: http://www.insp.mx/salud/index.html.

This paper discusses recent trends concerning the commercialization of pesticides in Mexico and focuses on organophosphates and their potential health risk impact. It points out the existing lack of knowledge on health effects associated to chronic exposure to organophosphate pesticides. A need for both toxicological and epidemiologic studies of chronic exposure is identified. Regulatory programs for pesticides in Mexico and the United States are also compared. The paper also addresses the possibility of effective enforcement of environmental and health regulations in Mexico as a result of more rigorous surveillance under NAFTA.

In this paper are discussed essential issues about the concept, characteristics and general functions of sanitary regulation, as well as the principles and main lines of action contained in the Program of Modernization of the Sanitary Regulation, which is being implemented by the Ministry of Health of Mexico. In addition, some considerations are offered regarding the supporting role of such a program, in the context of the free trade era that Mexico is undergoing. After 40 years of an outdated sanitary regulation based in a non-functional licensing concept, the new and improved scheme relies on several ammendments to the General Health Law. Thus, the present approach, focuses on a set of flexible, simple and efficient rules, strengthened by proven scientific and technical procedures.

The three countries that have signed the North American Free Trade Agreement (NAFTA) have focused particular interest and concern on the potential impact that this agreement will have on the environmental health, based on the premise that economical development should not detriment neither the environment nor the human health. In this paper, the NAFTA is presented as an opportunity to improve environmental and occupational health in Mexico and assumes that the study of the potential impact of NAFTA could help to find the solutions of the former and actual environmental health problems. From this perspective, the north-border maquila industry is analyzed as a case study for the purpose of identifying and predicting the impact of NAFTA on environmental and the occupational health. Preventive as well as control measurements are suggested. The general characteristics of the U.S.-Mexico border and the maquila industry are presented. The lack of both social investment and urban planning along with population and economical growth are described. An explanation of the impact that these factors have had on the environmental and occupational problems is discussed. Special emphasis is given to the human health problems including that of water, air and soil contamination by industrial toxic residues. Also, some possible health impact of NAFTA are outlined. Finally a sustainable developmental intervention is suggested, based on NAFTA as an opportunity to take advantage of coming structural changes that will improve the environmental health conditions at the northern-border and in the entire country.

This paper discusses some of the proposals regarding the improvement of the efficiency in the delivery of health care services. Several countries have implemented different strategies based on the experience of the Health Maintenance Organizations, which have used the market to stimulate competition between providers and insurance companies. One of the proposals includes the creation of agencies that would compete in quality and in price. Another one implies the creation of a National Health Service capable of hiring public or private services from local agencies. The ideal strategy would enable a consumer to choose between insurance companies and public and private providers, and would hopefully create cost conditions reasonably correlated with the efficiency and quality of the rendered services.

The purpose of this paper is to present the basic principles needed to implement a national strategy for quality assurance in medical care in Mexico. The first part is devoted to a review of the basic concepts of quality of care with the aim of analyzing the evolution of the discussion of the concept of "quality assurance". This review constitutes the reference frame of the description of the historical evolution of quality assurance in different parts of the world. Finally, the experiences regarding quality assurance in Mexico are discussed and several basic proposals for the design of a national quality assurance strategy are presented.

In this paper the role of efficiency in health care delivery is discussed. In the first part several definitions of efficiency are presented and the most common efficiency analysis are described. In the second part of the paper some experiences aimed at improving the efficiency of health care delivery in England, Latin America and Mexico are discussed. Finally, the author presents four proposals for the improvement of efficiency of health care delivery in Mexico: monetary reward associated to performance, alternative organization of health services, investment in management training for health manpower, and operational research in the health systems.