Chile has made history by becoming the first country in the Americas—and the second worldwide—to be officially verified by the World Health Organization (WHO) for the elimination of leprosy, also known as Hansen disease. This significant public health achievement reflects over three decades of dedicated effort to combat this ancient disease, which was historically recorded in Chile as early as the late 19th century, particularly on Rapa Nui (Easter Island).
Since 1993, Chile has not reported any locally acquired cases of leprosy, with the last confirmed instance occurring more than 30 years ago. Despite the absence of local transmission, the disease has remained on the public health agenda, monitored through mandatory reporting and integrated surveillance systems. This vigilance, alongside robust treatment and prevention strategies, has been crucial in maintaining the country’s leprosy-free status.
Dr. Tedros Adhanom Ghebreyesus, WHO Director-General, commended Chile’s achievement, stating, “This landmark public health achievement is a powerful testament to what leadership, science, and solidarity can accomplish.” He emphasized that Chile’s success sends a strong message globally: with sustained commitment and inclusive health services, it is possible to eradicate ancient diseases.
Chile’s elimination of leprosy has been validated through a comprehensive assessment conducted by an independent expert panel at the request of the country’s Ministry of Health. This panel reviewed the country’s epidemiological data and surveillance mechanisms, confirming the absence of local transmission and the capacity to manage potential future cases. “This is very good news and a source of great pride for our country,” stated Ximena Aguilera, Chile’s Minister of Health. “This milestone reflects decades of sustained public health efforts, including prevention strategies, early diagnosis, and effective treatment.”
Key Achievements in Public Health
Between 2012 and 2023, Chile reported only 47 cases of leprosy, all of which were not locally acquired. The country’s integrated health model focuses on early detection and comprehensive care, utilizing primary care centers as the first point of contact for suspected cases. Patients are referred to specialized dermatology services for diagnosis and treatment, ensuring timely management of the disease and its effects.
The health system in Chile prioritizes early intervention and disability prevention. It also provides holistic care, which includes physiotherapy and rehabilitation services, ensuring continuous support for those affected. This model not only aids recovery but also promotes social inclusion, addressing both physical and emotional needs associated with the disease.
Implications for the Region
Chile’s success serves as a beacon for other nations in the Americas, demonstrating the potential for disease elimination through political will, cross-sector collaboration, and adaptive planning. Since 1995, the Pan American Health Organization (PAHO), in coordination with the WHO, has provided multidrug therapy (MDT) free of charge to countries in the Americas, including Chile. This consistent access to treatment has been vital in curing patients and preventing further transmission.
PAHO has also supported Chile in aligning its surveillance efforts with international standards, enhancing laboratory capacity, and maintaining clinical expertise, especially in a low-incidence context where many health workers may never encounter a case during their careers.
Ensuring Continued Success
Chile’s elimination of leprosy has been achieved within a framework that promotes human rights and prevents discrimination. National legislation guarantees equal access to healthcare, social protection, and disability services, ensuring that affected individuals receive care without stigma or exclusion. The country’s mixed public-private health system, bolstered by regulatory oversight, further enhances equitable access, especially for vulnerable populations.
As Chile enters the post-elimination phase, it is encouraged to maintain sensitive surveillance and clinical expertise for managing future sporadic cases. The verification panel has also recommended the formal designation of a referral center and the use of WHO Academy’s online training resources for health workers, strengthening the long-term capacity and preparedness of the health system.
Leprosy, a chronic infectious disease caused by the bacterium Mycobacterium leprae, affects the skin, peripheral nerves, and mucosa of the upper respiratory tract. If left untreated, it can result in severe nerve damage, disabilities, and social stigma. However, it is fully curable with multidrug therapy, and early detection can prevent complications. Globally, leprosy persists in over 120 countries, with more than 200,000 new cases reported annually.
Chile’s achievement not only highlights the effectiveness of its public health strategies but also sets a precedent for other countries aiming to eliminate neglected tropical diseases. With ongoing commitment to health equity and comprehensive care, the nation stands as a model for disease control and eradication efforts.
This milestone underscores the importance of continued vigilance and collaboration in public health, reinforcing the demand for sustained efforts in monitoring and responding to health challenges. Engaging communities and ensuring access to care will be essential in maintaining the progress achieved and protecting the health of all Chileans.
Readers are encouraged to share their thoughts on this significant public health achievement and its implications for other regions affected by leprosy and similar diseases.
Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice.
