Chile has officially done something no other country in the Americas has done before: eliminate leprosy disease.
In March 2026, the World Health Organization (WHO) and the Pan American Health Organization (PAHO) verified Chile as the first country in the Americas—and only the second in the world, after Jordan—to reach this milestone.
That is a big sentence. So what does it actually mean?
A disease with an ancient reputation meets modern public health
Leprosy, also called Hansen disease, is a long-lasting bacterial infection. It mainly affects the skin and peripheral nerves and, without treatment, can cause disability. It is curable with a combination of medicines, and early treatment helps prevent lasting harm.
In Chile, the disease was historically recorded mainly on Rapa Nui, also known as Easter Island. The country’s last locally acquired case was detected in 1993. More than three decades later, an independent expert panel reviewed Chile’s records, surveillance system, case-management procedures and plans for staying alert. The result: official verification that local transmission had ended and that the country could detect and respond if a case appeared in the future.
In other words, this was not a gold star handed out for simply having no recent cases. Chile had to show its work.
The quiet work behind the headline
Public health victories rarely come from one dramatic moment. This one was built through years of monitoring, reliable access to treatment and health services that kept watching even after locally acquired cases disappeared.
That last part matters. When a disease becomes rare, it can become easier to overlook. Chile continued to maintain systems capable of recognizing and treating it. Since 1995, PAHO and WHO have also helped ensure uninterrupted access to multidrug therapy in countries across the Americas, including Chile, with medicines supplied free through international partnerships.
Chile is now the 61st country worldwide to have eliminated at least one neglected tropical disease. It joins Brazil, Colombia, Ecuador, Guatemala and Mexico among countries in the Americas that have reached an elimination target for at least one such disease.
“Eliminated” does not mean “forgotten”
There is an important distinction here. WHO verification does not mean the bacterium has vanished from Earth or that Chile could never see another imported case. People travel, and health systems still need to recognize symptoms, provide treatment and prevent stigma.
The achievement means Chile has met WHO’s standard for eliminating leprosy disease within the country and has demonstrated that its defenses can hold.
That is why continued surveillance is part of the success story, not a gloomy footnote. The goal is not to declare victory and switch off the lights. It is to make the victory last.
A hopeful lesson that travels
Leprosy has carried fear and stigma for centuries. Chile’s milestone replaces some of that old story with a much better one: this is a curable disease, transmission can be stopped, and sustained public health work can push it out of entire countries.
The methods are not mysterious. Find cases. Make treatment available. Track the evidence. Keep health workers prepared. Stay committed long after the issue leaves the headlines.
Chile’s success took decades, which is exactly what makes it so encouraging. Progress does not always arrive with fireworks. Sometimes it arrives as 30 years without a locally acquired case—and a careful international review confirming that the work paid off.
Sources
- World Health Organization — Chile becomes the first country in the Americas to be verified by WHO for the elimination of leprosy (March 4, 2026): https://www.who.int/news/item/04-03-2026-chile-becomes-the-first-country-in-the-americas-to-be-verified-by-who-for-the-elimination-of-leprosy
- Pan American Health Organization — Chile becomes the first country in the Americas to be verified by WHO for the elimination of leprosy (March 4, 2026): https://www.paho.org/en/news/4-3-2026-chile-becomes-first-country-americas-be-verified-who-elimination-leprosy
- Pan American Health Organization — Leprosy (Hansen disease): https://www.paho.org/en/topics/leprosy-hansen-disease
