El Salvador has achieved a significant public health victory, officially validated by the World Health Organization (WHO) for eliminating trachoma as a public health problem. This landmark achievement marks a crucial step forward in the global fight against the world’s leading infectious cause of blindness. The validation signifies the successful culmination of years of dedicated effort, strategic investment, and robust community engagement aimed at eradicating this preventable disease.
A Global Health Milestone Celebrated
Dr. Tedros Adhanom Ghebreyesus, WHO Director-General, lauded El Salvador’s success, stating, "I congratulate El Salvador on this remarkable achievement. It is a testament to the power of political commitment, strategic investment, and community engagement. El Salvador’s success is a vital step towards our global target of eliminating trachoma worldwide by 2030 and a clear signal that a healthier, more equitable future is within reach." His remarks underscore the significance of this validation not only for El Salvador but also for the broader global health agenda.
The validation process was rigorous and multi-year, involving comprehensive assessments to confirm the absence of trachoma as a public health threat and to verify the country’s capacity to detect and respond to any potential resurgence. This meticulous approach ensures the sustainability of the elimination efforts and provides confidence in the data presented.
The Journey to Elimination: A Multi-Faceted Approach
Between 2023 and 2026, El Salvador undertook targeted assessments in communities identified as having higher environmental and social risk factors for trachoma. These extensive evaluations, which included surveying children for early signs of infection and adults for advanced stages of the disease, revealed no evidence of active trachoma transmission. The absence of active disease in children and advanced, sight-threatening conditions in adults confirmed that trachoma no longer poses a public health problem within the nation.
Dr. Jarbas Barbosa, Director of the Pan American Health Organization (PAHO), emphasized the country’s dedication to its most vulnerable populations. "This validation reflects El Salvador’s commitment to reaching populations in the most vulnerable conditions and generating solid evidence to demonstrate that trachoma is not endemic in the country," he remarked. "It is the result of sustained efforts to reach communities, identify potential cases, and ensure no one was left behind." PAHO has been a key partner in supporting regional efforts to combat neglected tropical diseases, including trachoma.
El Salvador’s success was built upon a comprehensive, multisectoral strategy. This approach involved strengthening primary healthcare services, implementing crucial improvements in water, sanitation, and hygiene (WASH) infrastructure, and enhancing eye health services, including visual acuity screenings for adults. Collaboration among various government sectors, local communities, and international partners was instrumental in achieving these integrated health outcomes.
Sustaining the Gains: Systems for the Future
Beyond achieving elimination, El Salvador has proactively established robust systems to ensure the long-term sustainability of this public health victory. These include training healthcare personnel to recognize and manage potential cases, integrating surveillance mechanisms into the national health system, and developing the capacity to detect and treat trachiasis, the advanced, blinding stage of trachoma. This proactive approach is crucial for preventing any potential re-emergence of the disease.
"El Salvador has reached a major health milestone by achieving certification as a country free of trachoma, the result of sustained national efforts, with the support of the Pan American Health Organization and the Embassy of Canada," stated El Salvador’s Minister of Health, Francisco Alabi. "We are proud to have reached this achievement in just three years, positioning the country in the region and improving the visual health of our population." The minister’s pride highlights the rapid and effective implementation of the elimination strategy.
PAHO’s support, channeled through the Initiative for the Elimination of Trachoma in the Americas and in collaboration with the Government of Canada, played a pivotal role in the country’s journey. The elimination process also provided valuable opportunities to deliver integrated health services to the communities reached during the assessment phases, extending the benefits beyond trachoma prevention.
Understanding Trachoma: A Persistent Global Challenge
Trachoma, a bacterial infection caused by Chlamydia trachomatis, is transmitted through direct contact with infectious eye and nasal discharge from infected individuals. Repeated infections can lead to irreversible scarring of the inner eyelid. This scarring, known as trachiasis, causes the eyelashes to turn inward, rubbing against the cornea and leading to chronic pain, corneal opacification, and ultimately, blindness.
The disease is intrinsically linked to poverty and inequities in access to basic services, particularly WASH and healthcare. It disproportionately affects marginalized communities in tropical regions, making it a quintessential neglected tropical disease (NTD). These diseases, despite their devastating impact, often receive insufficient attention and resources.
In the Americas, trachoma continues to be a public health concern in rural and remote areas of Brazil, Colombia, Guatemala, and Peru. Regional efforts are ongoing to better understand and address the epidemiological status of trachoma in other countries where it is suspected, including Bolivia, Ecuador, Guyana, Panama, Paraguay, and Venezuela. El Salvador’s successful elimination places it among a growing list of countries that have overcome this challenge.
The Global Context and Future Outlook
The WHO’s road map for neglected tropical diseases 2021-2030 outlines ambitious targets for the control, elimination, and eradication of these debilitating conditions. Trachoma elimination is a key component of this global strategy, with a target of worldwide elimination as a public health problem by 2030.
The definition of eliminating trachoma as a public health problem, as established by the WHO, involves specific epidemiological thresholds: a prevalence of trachomatous trichiasis (TT) unknown to the health system of less than 0.2% in individuals aged 15 years and older, and a prevalence of trachomatous inflammation – follicular (TF) in children aged 1-9 years of less than 5%, in each formerly endemic district. Crucially, the existence of a system to identify and manage incident cases of TT is also a prerequisite.
El Salvador’s achievement is particularly noteworthy as it is the first country in Central America and the second in the Americas to reach this milestone. It now joins a distinguished group of 64 countries worldwide recognized by the WHO for eliminating at least one neglected tropical disease, with seven of these countries located in the Americas. This growing list includes nations like Algeria, Australia, China, India, Mexico, Morocco, and Vietnam, showcasing a global momentum towards NTD control.
To prevent the re-emergence of trachoma, the WHO recommends that countries that have achieved elimination maintain robust surveillance systems and ensure continued access to quality eye care services. This proactive approach is vital to safeguarding the progress made and protecting populations from the threat of preventable blindness.
Trachoma is one of over 30 communicable diseases and related conditions targeted under PAHO’s Disease Elimination Initiative, which aims for their elimination in the Americas by 2030. The success in El Salvador serves as a powerful example of what can be achieved through sustained commitment and collaborative action in the fight against neglected tropical diseases, offering hope for a future where preventable blindness is a relic of the past. The WHO Alliance for the Global Elimination of Trachoma by 2020 (GET2020), launched in 1996, laid the groundwork for these global efforts, fostering a network of international stakeholders dedicated to this cause. While the initial target year has passed, the mission continues, with renewed vigor and achievable goals for the coming decade.
