The United States–Mexico border environmental public health: the challenges of working with two systems

La salud pública ambiental en la frontera entre México y los Estados Unidos: los retos que plantea trabajar con dos sistemas

A saúde pública ambiental na fronteira entre o México e os Estados Unidos: os desafios de trabalhar com dois sistemas

Genny Carrillo Felipe Uribe Rose Lucio Alberto Ramirez Lopez Marcelo Korc About the authors

ABSTRACT

This report shares the challenges and opportunities encountered by a binational project that examined the availability of environmental and public health information for the United States–Mexico border area. The researchers interviewed numerous national and binational agencies on both sides of the border, endeavoring to develop a framework to advance the knowledge of academic and public health professionals in the area of environmental border health. However, the lack of standardized indicators and metrics in both countries validates the emergent need to establish a viable framework for the collection, analysis, and dissemination of environmental information. Recommendations for next steps are included.

Keywords
Border areas; border health; bilateral cooperation programs; environmental health; delivery of health care; Mexico; United States

RESUMEN

En este informe se describen los retos y las oportunidades que ha detectado un proyecto binacional que examinó la disponibilidad de información sobre salud ambiental y salud pública en la zona fronteriza entre México y los Estados Unidos. Los investigadores entrevistaron a numerosos organismos nacionales y binacionales a ambos lados de la frontera, a fin de elaborar un marco para la difusión del conocimiento de los profesionales académicos y de la salud pública en el ámbito de la salud ambiental fronteriza. La falta de indicadores y métodos de medición normalizados en ambos países confirma la necesidad emergente de establecer un marco viable para la recopilación, el análisis y la difusión de información ambiental. Se incluyen recomendaciones para los próximos pasos. En este informe se describen los retos y las oportunidades que ha detectado un proyecto binacional que examinó la disponibilidad de información sobre salud ambiental y salud pública en la zona fronteriza entre México y los Estados Unidos. Los investigadores entrevistaron a numerosos organismos nacionales y binacionales a ambos lados de la frontera, a fin de elaborar un marco para la difusión del conocimiento de los profesionales académicos y de la salud pública en el ámbito de la salud ambiental fronteriza. La falta de indicadores y métodos de medición normalizados en ambos países confirma la necesidad emergente de establecer un marco viable para la recopilación, el análisis y la difusión de información ambiental. Se incluyen recomendaciones para los próximos pasos.

Palabras clave
Áreas fronterizas; salud fronteriza; programas de cooperación bilateral; salud ambiental; prestación de atención de salud; México; Estados Unidos

RESUMO

Este relatório apresenta os desafios e oportunidades encontrados por um projeto binacional que examinou a disponibilidade de informações ambientais e de saúde pública na região da fronteira entre o México e os Estados Unidos. Os pesquisadores entrevistaram diversas agências nacionais e binacionais em ambos os lados da fronteira, procurando desenvolver um sistema destinado a promover os conhecimentos de profissionais acadêmicos e de saúde pública na área da saúde ambiental em regiões de fronteira. No entanto, a falta de indicadores e métodos de medição padronizados entre os dois países destaca a necessidade emergente de estabelecer um sistema viável para a coleta, análise e difusão de informações ambientais. São feitas recomendações sobre as próximas medidas a serem tomadas.

Palavras-chave
Áreas de fronteira; saúde na fronteira; programas de cooperação bilateral; saúde ambiental; assistência à saúde; México; Estados Unidos

The United States–Mexico border area spans 3 100 km. In 2010, its population was more than 14 608 655 million people, with 7 303 754 million on the United States side and 7 304 901 million on Mexico side (11 United States Census Bureau. Home page. Suitland, Md: U.S. Department of Comerce; 2011. Available from: https://www.census.gov/ Accessed on 10 February 2016.
https://www.census.gov/...
). At current growth rates, the population is set to double in approximately 35 years, reaching an estimated 29 million residents by 2045 (22 Instituto Nacional de Estadistica y Geografía. Censos y conteos de población y vivienda, 2010. Aguascalientes, Mexico: INEGI; 2010. Available from: www.inegi.org.mx/est/lista_cubos/consulta.aspx?p=pob&c=1 Accessed on 22 February 2017.
www.inegi.org.mx/est/lista_cubos/consult...
).

The border area has 14 pairs of “sister cities” that are linked to one another both economically and culturally, and in many cases, share waterways (Figure 1). These sister cities have many issues in common, but also differ substantially in how they are governed; their access to health care; and their priorities for disease surveillance and environmental data collection (33 Langellier BA, Guernsey de Zapien J, Rosales C, Ingram M, Carvajal SC. State Medicaid expansion, community interventions, and health care disparities in a United States-Mexico border community. Am J Public Health. 2014;104(8):e94-100.99 Schneider E, Laserson K, Wells C, Moore M. Tuberculosis along the United States-Mexico border, 1993–2001. Rev Panam Salud Publica. 2004;16(1):23–34.).

FIGURE 1
United States–Mexico border area showing its “sister cities,” 2016

Source: Pan American Health Organization. Transnational cooperation in environmental health along the US-Mexico border. Washington, DC: PAHO; 2013. Reproduced with permission.

The United States and Mexico are facing critical gaps in environmental health knowledge that could compromise binational efforts to confront diseases related to environmental pollutants. Many of the environmental health hazards faced by the United States–Mexico border states are unknown due to a lack of basic data that would allow comparisons among the environment and health indicators (66 Servin AE, Muñoz FA, Zúñiga ML. Healthcare provider perspectives on barriers to HIV-care access and utilisation among Latinos living with HIV in the US-Mexico border. Cult Health Sex. 2014;16(5):587–99.). Due to the health disparities among border populations, it is imperative that information sets and databases from both countries be identified and made accessible to the public health professionals in the area (1010 Homedes N, Ugalde A. Globalization and health at the United States-Mexico border. Am Public Health. 2003;93(12):2016–22., 1111 Waterman S, Stolp C. The North American Free Trade Agreement and public health at the U.S.-Mexico border. Am J Public Health. 2004;1077–8.).

Preventing and reducing chronic and infectious health problems—especially asthma, birth defects, cardiovascular disease, diabetes, and pediatric cancers that strike hundreds of thousands of families in both countries annually—demands shared information. Currently, to advance binational knowledge, academics and public health professionals on both sides work independently or collaboratively on various environmental or health topics, but must gather available information from numerous different sources, ranging from peer-reviewed journal articles to local agencies in both countries (1212 Pan American Health Organization. Transnational cooperation in environmental health along the US-Mexico border. Washington, DC: PAHO; 2013.).

Additionally, the United States–Mexico border area is plagued by international and domestic policy issues involving lawmakers and law enforcement officials in both countries (1313 Lee E, Wilson CE, Lara-Valencia F, de la Parra C, Van SchoiK R, et al. The state of the border report: a comprehensive analysis of the US-Mexico Border. Washington: Border Research Partenship; 2013.). The number of people who cross the border every day potentially increases the risk of transmitting communicable diseases from one country to the other. As such, several binational agencies and programs have been created with different missions and goals to address the challenges and facilitate collaborative work among the United States and Mexico in the border area (1414 Martinez-Donate AP, Hovell MF, Rangel MG, Zhang X, Sipan, CL, et al. Migrants in transit: the importance of monitoring HIV risk among migrant flows at the Mexico–US border. Am J Public Health. 2015;105(3):497–509.).

The purpose of this project was to identify the most important and prevalent environmental health issues in the United States–Mexico border area and to identify a stakeholder task force. This report, however, focuses on the many challenges and opportunities encountered by the study it sought to identify border agencies that generate and share health and environmental data for analyses. Ultimately, the goal was to develop a framework for a multi-phase process that would produce a binational environmental and health tracking model to be replicated throughout the border area.

MATERIALS AND METHODS

This project was conducted in 2014 – 2015 and focused on Hidalgo, Kinney, and Maverick counties in the State of Texas in the United States, and Piedras Negras municipality in the State of Coahuila in Mexico. Thirty local and international stakeholders from both countries were contacted and surveyed (Table 1) using an open-ended interview that covered methodologies for data collection, management, and accessibility, and type of data on environmental contaminants, as well as impact on population health. A content analysis of interviews was performed.

TABLE 1
Description of national and binational agencies charged with health and/or environmental oversight in the United States of America and Mexico, 2016

To establish partnerships with binational stakeholders, the researchers first drew up “Memorandums of Understanding” with authorities from Mexico and the United States to ascertain the data type and collection methodology being employed by each. The Mexican agencies approached were the Secretaría de Medio Ambiente y Recursos Naturales (Environment and Natural Resources Secretariat; SEMARNAT), the Secretaría de Salud (Health Secretariat), as well as other state and federal agencies. The United States agencies were the Department of Health and Human Services (DHHS), the Environmental Protection Agency (EPA), the Texas Commission on Environmental Quality (TCEQ), and other potential sources, including the 11 public health regions that compose the Texas Department of State Health Services. A number of key partners were identified from among various local and regional governmental agencies and from academic institutions in the State of Tamaulipas (Mexico) and Texas. Table 2 lists some of the contributors based on their access to data for this project.

TABLE 2
List of Mexican stakeholders interviewed and scope of work related to environmental and health issues in the northern part of Coahuila State, Mexico, 2016

Source information in Mexico

An integrated system will assist various governmental and non-governmental organizations in Mexico. Data collected in Mexico regarding health and environmental issues is managed by federal and state authorities. The Health Secretariat organizes and operates the Sistema Nacional de Vigilancia Epidemiológica (National System for Epidemiological Surveillance; SINAVE), which identifies disease cases, mortality, and risk and protective factors for epidemiological surveillance according to national standards (1515 Government of Mexico. Norma Oficial Mexicana NOM-17-SSA2-2012 para la Vigilancia Epidemiológica. Diario Oficial de la Federación, (19-02-2013). Mexico: SEGOB. Available from: http://dof.gob.mx/nota_detalle.php?codigo=5288225&fecha=19/02/2013 Accessed 9 February 2016.
http://dof.gob.mx/nota_detalle.php?codig...
).

It is important to clarify that epidemiological surveillance in Mexico is integrated in the Sistema Único de Información para la Vigilancia Epidemiológica (Information System for Epidemiological Surveillance; SUIVE). This system has four components: Weekly New Cases (SUAVE); the Hospital Network for Epidemiological Surveillance (RHOVE); the Epidemiologic and Statistic Systems for mortality; and the Epidemiologic Surveillance for Special Systems. It is important to mention that operations and procedures for epidemiologic surveillance are standardized through out the different institutions of the National Health System (1616 Secretaría de Salud. Notificación semanal de casos nuevos de enfermedades, 2015. Mexico: Secretaría de Salud. Available from: https://www.gob.mx/cms/uploads/attachment/file/50240/morbi_dic_2015.pdf Accessed 8 February 2016.
https://www.gob.mx/cms/uploads/attachmen...
).

SUAVE is a weekly reporting system of new cases of diseases in Mexico. The morbidity data gathered can be analyzed at various levels—local, state, regional, and by jurisdiction. For this report, the data was gathered and analyzed at the “Sanitary Jurisdiction Level I” for the City of Piedras Negras, Coahuila. This jurisdiction comprises several municipalities located in the northern part of the State of Coahuila, including Allende, Guerrero, Hidalgo, Nava, Piedras Negras, and Villa Union. In 2010, these municipalities had 202 888 inhabitants (1717 Instituto Nacional de Estadistica y Geografía. Población total y su distribución porcentual según condición de uso de servicios de salud e institución por cada municipio, 2010. Aguascalientes, Mexico: INEGI; 2010. Available from: http://www3.inegi.org.mx/sistemas/tabuladosbasicos/default.aspx?c=27303&s=est Accessed 7 February 2017.
http://www3.inegi.org.mx/sistemas/tabula...
). In Mexico, the methodology for calculating an indicator is based on the total number of cases for a specific disease divided by the total population covered by the health system. Thus, the crude incidence age-adjustedrate is obtained using the straightforward method of adjusting rates (1818 Organizacion Panamericana de la Salud. La estandarización: un método epidemiológico clásico para la comparación de tasas. Epidemiol Bull. 2002;23(3):9–12.).

RHOVE gathers information about hospitalization discharges, but only includes hospitals that are part of the Health Secretariat. The information obtained is analyzed by the hospital. In the northern part of the State of Coahuila, data on hospital discharges is gathered from the General Hospital in Piedras Negras. In order to calculate indicators, the total number of hospital discharges are registered by year per disease, divided by the total discharges in the year multiplied by 100.

Considering the importance of timely and accurate information on health conditions and the need to understand the prevalence and distribution of target conditions for both sides of the border, the researchers examined relevant existing and potential health data sources at the national, state, and regional levels. Additionally, current national and state health tracking systems were reviewed to explore the potential opportunities and constraints of their data sources in providing integrated information for effective assessment and analysis of community health.

Identification of common indicators in the United States–Mexico border area is urgently needed; however, it will take time to develop policies and procedures for addressing the issue. Health and environmental health professionals and federal representatives from both countries participated in a forum held on 6 February 2014 in McAllen, Texas, for the purpose of gathering input from participants on their respective and most significant environmental and health issues. Topics such as water quality and gastrointestinal diseases and air pollution from unpaved streets were acknowledged. The participants also provided information on the agencies related to each topic; however, they were unable to speak to the quality of the data required nor how to gather it.

RESULTS

The results of this project show that morbidity indicators from both sides of the United States–Mexico border area cannot be compared because the metrics used in data collection differ greatly. For example, in Coahuila, morbidity from asthma should be an indicator registered in the National Health System, but it is not. In Texas, there are annual surveys that evaluate diseases such as asthma and the data can be stratified using different population characteristics. In Coahuila, the indicator of annual hospital discharges by a specific disease is calculated based on the total number of hospital discharges in a given year. In Texas, there is a registry for annual discharges in a county and the indicator is comprised of a numerator of total health cases and a denominator of the exposed population.

In terms of the environment, the State of Texas utilizes air monitoring stations that are located near the United States–Mexico border. These stations are run by TCEQ and measure ranges of PPM 10 and PPM 2.5. In Coahuila, there were two data sets of air pollution taken in 2005 and 2008. These data were crude, measured in tons of air pollutants freed into the air and accumulated per year. The lack of standardized indicators and metrics in both countries validates the emergent need to establish a viable framework for the collection, analysis, and dissemination of environmental information. Currently, some programs, such as the United States–Mexico Border Health Commission are producing United States–Mexico data reports, but provide information/data sets separately (one for the United States, another for Mexico) due to the differences in data collection measures and metrics, and lack of any standardization.

Although Mexico and the United States share several common interests related to environmental and health problems along the border, there are conflicting positions on how to address them due to the absence of a legal framework on which to build bilateral cooperation. The creation of the United States–Mexico Border Health Commission (BHC) and the Border Environment Cooperation Commission (BECC) acknowledged the need for structures and mechanisms for fostering bilateral cooperation. A focus of these should be to develop a governance approach that includes coordinating among the various interests and stakeholders to assist in clarifying direction related to government’ actions (1919 Hill CJ, Lynn LE. Governance and public management, an introduction. J Policy Anal Manage. 2004;23(1):3–11.).

When the Governments of Mexico and the United States created the BHC in 2000, one of the objectives was to “strengthen the system of border health information” (2020 The United States-Mexico Border Health Commission. El Paso. Available from: www.borderhealth.org/about_us.php Accessed on 15 January 2017.
www.borderhealth.org/about_us.php...
). However, a health information system was not among its priorities or initiatives. Nonetheless, an administrative group that emerged at the local level was the Bi-national Health Council (BiHC). Originally sponsored by the Texas Department of State and Human Services, the BiHC extends this group along the international border (2020 The United States-Mexico Border Health Commission. El Paso. Available from: www.borderhealth.org/about_us.php Accessed on 15 January 2017.
www.borderhealth.org/about_us.php...
). This regional group forms a local framework for acting on bi-national health issues, establishing several priorities in the field of public health. However, these bi-national health councils do not include research in their objectives, and as such are not gathering comparable information on health issues. Consequently, these bi-national health councils should serve as the administrative figures from which BHC could meet its objective of strengthening the border health information system. Additional support could be garnered from other actors, such as the Working Group on Border Health Research, which is part of the BHC, and the Group of Leaders Across Borders in Arizona and Texas, among others.

BECC meanwhile, supports initiatives to solve critical environmental and health conditions in the border area in spite of the lack of environmental infrastructure (66 Servin AE, Muñoz FA, Zúñiga ML. Healthcare provider perspectives on barriers to HIV-care access and utilisation among Latinos living with HIV in the US-Mexico border. Cult Health Sex. 2014;16(5):587–99.). Thus, BECC is another administrative figure from which regional actors could develop projects in order to create infrastructure and utilize equipment to obtain comparable information from a bi-national perspective.

DISCUSSION

The framework of any study needs to consider that data collection and health and environmental resources exist in a cultural, organizational, and social context that should be included in the analysis (2121 Liaw ST, Pearce C, Liyanage H, Liaw GS, de Lusignan S. An integrated organization wide data quality management and information governance framework: theoretical underpinnings. Inform Prim Care. 2014;21:199–206.). In particular, this complexity exists in a cross-border area where political, administrative, economic, and cultural processes converge and are expressed differently by each country. It is therefore, imperative to analyze the decision-making processes of each country that could directly or indirectly affect the development of information on health and the environment and its accessibility. It is necessary to consider the interaction of numerous factors and to address how information should be handled and shared.

Tremendous progress was made toward improving the quality of the environment and human health in the United States–Mexico border through the Border 2012 Program and is being continued through the 2020 Program (2222 The United States-Mexico Border 2020 Program, Environmental Protection Agency, Washington, DC. Available from: www.epa.gov/border2020 Accessed on 3 May 2017.
www.epa.gov/border2020...
). Academics and public health professionals are working together to improve border health and develop some type of surveillance for a range of important topics, including infectious diseases (2323 Collins-Dogrul J. Managing US–Mexico “border health”: an organizational field approach. Soc Sci Med. 2006;63(12):3199–211., 2424 Texas Department of State Health Services. Infection disease control reporting, 2016. Austin: Texas Department of State Health Services; 2016. Available from: www.dshs.state.tx.us/idcu/investigation/conditions/ Accessed on 3 March 2017.
www.dshs.state.tx.us/idcu/investigation/...
). However, much more collaboration, access to data, and a similar report system are needed to link environmental factors to environment-related health issues. Implementation of a bi-national environmental health tracking system along the border is important as it will help identify environmental health exposures among the communities, as well as related health consequences.

Challenges

It became apparent during the course of the project that “Memorandums of Understanding” were not sufficient for obtaining immediate access to the requested information. Moreover, when obtained, the information from different institutions was incomplete, partial, and limited in relation to geographic distribution and time periods. This is contrary to the norms that regulate the quantity and quality of the gathered information.

Furthermore, the process of interviewing institutional agencies and non-governmental organizations that collect and manage health and environmental information made it evident that staff charged with data often did not have decision-making authority. Although an executive at the contacted institution might have agreed to provide the required information, the task was often delegated to a subordinate and the outcome differed from the expectation set.

On the other hand, the information garnered from interviews of health and environmental authorities shed light on the most important health consequences related to pollutants. However, they were uncertain on how to access the data that supported their statements or whom to contact to obtain it. In addition, they pointed to a lack of standards among sources, contents, the extent of, and quantity of the information mentioned.

It is also important to mention that the United States faces challenges related to data collection at the state and county levels since much of it comes from investigations of outbreaks that are resolved locally. All too often this data is not reported to the appropriate entities, and thus, is not included in national databases.

Government agencies from both countries are charged with addressing the environmental and health challenges arising from the growing population and the industrialization of the United States–Mexico border area. A clearer path is needed within the agencies to help academics and researchers identify where and how to gather information required to study the border area’s specific and diverse public health problems.

Recommendations

Based upon the 2-year experience of this study, it is extremely important that researchers who wish to engage in a similar study first develop a formal plan or strategy for working with binational agencies to: (a) identify entities/individuals with whom to work; (b) gather information; and (c) interpret and compare the collected data. Researchers from the United States are more readily available, and fortunately, data is more easily obtained from many websites, as well as through requests for information made to State and Federal agencies.

The Pan American Health Organization (PAHO) has developed a socioecological model that proposes a four-step public health approach to reduce and prevent transnational environmental health problems along the United States–Mexico border area (1010 Homedes N, Ugalde A. Globalization and health at the United States-Mexico border. Am Public Health. 2003;93(12):2016–22.). This model should be used as the basis for establishing a standardized binational data collection program based on the environmental health priorities of both countries.

The development and identification of common binational environmental health issues and collaboration is imperative for the success of any initiative. It is important to specify which agencies will lead the project, and if possible, which departments within the collaborating agencies will be responsible for the provision of information. It is also of paramount importance that authorized contacts be identified, due to restrictions limiting access to databases and information. Nonetheless, setbacks in an established network may still occur if government policy and/or priorities change.

Conclusions

The United States–Mexico border populations shares many environmental, social, economic, cultural, and health characteristics. However, addressing their everyday problems is complicated by differing rules and regulations pertaining to the political and administrative organizations of their respective countries. This has resulted in health and environmental problems that are addressed unilaterally by each country’s institutions, undermining interagency cooperation for data collection and analysis and shared solutions. Future studies should focus not only on the governance of the information generated in each country, but also on how to resolve border problems through cooperation at the regional level.

Many border programs have been developed and work with public health professionals to address environmental and health issues; however, more is needed to collect, integrate, analyze, and disseminate standardized data from both countries. Furthermore, it is important that this data be contained within one main database that can be accessed by both countries. Additionally, standardized metrics would allow both countries to compare and contrast statistics in a more efficient and reliable manner. These metrics would also facilitate better policy development to provide improved public health for the border areas in the 21st Century. Building on the strengths of each country and taking into consideration the limitations of the current modes of cooperation will bring forth a new era characterized by partnerships among truly binational border-wide organizations and stronger collaboration between the public health and environmental protection sectors, which will lead to a better future for the United States–Mexico border.

Although it is unrealistic to believe that every single disease will be tracked and that all information will be shared bi-nationally, if health officials from both countries identify and categorize priority diseases and environmental issues, a standardized data set could be developed and monitored. High ranking health and environmental officials need to work closely to identify venues to develop an environmental public health system that will help both countries institute policies to decrease environmental exposure and to monitor the possibility of outbreaks. It is important to develop binational or international mechanisms utilizing organizations, such as PAHO, to develop databases and tools to share information. Such a collaboration may provide governmental agencies with confidence regarding the storage, handling, exchange, and dissemination of information on health and the environment. The latter is becoming increasingly strategic from a political standpoint and will be more critical as the effects of climate change are experienced, especially in communities along the United States–Mexico border.

Acknowledgements

The authors wish to acknowledge to Juan Parra, of El Colegio de la Frontera Norte for assisting with the editing of the bibliography.

Funding

This project was carried out with funds obtained from the Border Environmental Cooperation Commission (Award Number: TAA14-026; B2020 R6.934).

Conflict of interests

None declared.

Disclaimer

Authors hold sole responsibility for the views expressed in the manuscript, which may not necessarily reflect the opinion or policy of the RPSP/PAJPH and/or PAHO.

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Publication Dates

  • Publication in this collection
    21 Aug 2017

History

  • Received
    15 Nov 2016
  • Accepted
    06 Dec 2016
Organización Panamericana de la Salud Washington - Washington - United States
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