WHO Confirms Chile’s Success in Ending Local Transmission of Hansen’s Disease
Chile has become the first nation in the Americas to be officially verified by the World Health Organization (WHO) for eliminating leprosy as a public health problem. The recognition comes after more than three decades without any locally transmitted cases. Chile recorded its last indigenous case of the disease in 1993, marking a major milestone in the global fight against infectious diseases.
The achievement reflects long-term public health surveillance, timely diagnosis and consistent monitoring by Chile’s healthcare system. Even after local cases became rare, authorities maintained strong disease surveillance to ensure that imported infections could be rapidly identified and treated.
WHO Verification and Global Recognition
The certification followed an extensive evaluation conducted by experts from the WHO and the Pan American Health Organization (PAHO). At the request of Chile’s Ministry of Health, specialists examined epidemiological records, surveillance systems and case management practices.
The assessment confirmed that local transmission had been effectively interrupted and that the country still possesses strong capacity to detect and respond to any imported cases. Chile has therefore become the second country worldwide to receive official WHO confirmation of leprosy elimination, after Jordan achieved the milestone in 2024.
Understanding Leprosy (Hansen’s Disease)
Leprosy, also called Hansen’s disease, is a chronic infectious illness caused by the bacterium Mycobacterium leprae. The disease mainly affects the skin, peripheral nerves, eyes and respiratory tract lining.
Leprosy develops slowly, often with an incubation period of around five years, though symptoms may take decades to appear. Early signs include skin lesions, numbness, nerve damage, muscle weakness and eye complications. If untreated, the infection can cause permanent disabilities.
Today, leprosy is fully curable through multidrug therapy (MDT), which uses antibiotics such as rifampicin, dapsone and clofazimine.
Global Situation of the Disease
Leprosy is classified among the WHO’s Neglected Tropical Diseases (NTDs) , which primarily affect vulnerable populations in developing regions. Global initiatives over the past decades have significantly reduced its prevalence.
Despite this progress, the disease has not been eradicated. According to WHO data, 172,717 new cases were reported globally in 2024 , with most occurring in parts of Asia, Africa and Latin America. Delayed diagnosis, social stigma and weak health infrastructure remain major challenges.
Important Facts for Exams
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Leprosy is also known as Hansen’s disease .
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It is caused by the bacterium Mycobacterium leprae .
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The disease is treated using multidrug therapy (MDT) .
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WHO’s Global Leprosy Strategy 2021–2030 aims to interrupt transmission and reduce disabilities.
Factors Behind Chile’s Achievement
Chile’s success is largely attributed to strong public health infrastructure, consistent disease surveillance and universal access to treatment. Authorities maintained mandatory reporting systems even when case numbers declined significantly.
Early detection programmes, integrated healthcare services and collaboration with international organisations
Month: Current Affairs - March 06, 2026
Category: Public Health | WHO