Leprosy is a chronic infectious disease caused by the *bacterium* ***Mycobacterium leprae***. It primarily affects the skin, peripheral nerves, upper respiratory tract, eyes, and testes. While curable, it can lead to permanent disability if left untreated, mainly affecting people in tropical and subtropical regions. Track Leprosy activity and outbreaks specific to Illinois.
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Leprosy is one of the oldest recorded diseases, often leading to severe social stigma and isolation throughout history. The bacterium *Mycobacterium leprae* was identified by Norwegian physician Gerhard Armauer Hansen in 1873, making it the first bacterium ever identified as causing human disease. Its curability with Multi-Drug Therapy since the 1980s has drastically reduced its global burden.
Leprosy is primarily transmitted through droplets from the nose and mouth during close and frequent contact with an untreated person who has the disease. It is not highly contagious, and most people are naturally immune to the bacterium. Transmission typically requires prolonged contact, making casual contact with an infected person generally safe.
Contagious Period: Varies by disease
Local health department information and state-specific prevention guidance
Our AI-powered surveillance continuously monitors Leprosy activity across Illinois. We track data from state health departments, local hospitals, CDC reports, and 50+ global health sources to provide early warning of emerging threats.
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For official state health alerts, vaccination locations, and public health guidance specific to Illinois, visit your state health department's website.
Whether you live in Illinois, are traveling there, or have family in the state, understanding Leprosy prevention is essential. Follow these evidence-based prevention measures:
If you experience symptoms of Leprosy in Illinois, contact your healthcare provider immediately. Early diagnosis and treatment improve outcomes significantly.
Emergency symptoms: If you experience severe symptoms, difficulty breathing, or signs of dehydration, call 911 or go to your nearest emergency room.
Trusted information from leading health organizations
Official guidance from the U.S. Centers for Disease Control and Prevention
View CDC Resources →Global disease surveillance and guidelines from the World Health Organization
View WHO Resources →Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-06-03
No confirmed cases reported in Illinois yet. Here are the latest Leprosy reports from our global surveillance network.
The World Health Organization (WHO), together with the Pan American Health Organization (PAHO), congratulates Chile for becoming the first country in the Americas - and the second globally - to be officially verified as having eliminated leprosy disease. Leprosy (Hansen disease)…
India remains the highest-burden leprosy country in the world, reporting over 100 000 new cases annually in most recent years and accounting for more than half of global new case detections. Despite achieving WHO’s “elimination as a public health problem” threshold…
A leprosy detection campaign is scheduled to run in Chamarajanagar from November 24 to December 9. This proactive public health initiative aims to identify cases and prevent further transmission and disability within the community. <!-- hash:ce35b9e9402253b40ab9baf6b125def2 -->
* Chile is the first country in the Americas verified by WHO for eliminating leprosy disease * No locally acquired leprosy cases reported in Chile for over 30 years since 1993 * Leprosy is a chronic infectious disease causing nerve damage and disabilities if untreated Did our …
No cases of leprosy have been registered in Serbia for many years, Dr. Dragana Plavsa, an epidemiologist with the Batut Institute of Public Health, said today. Plavsa added that leprosy could appear in our country, but only as an imported case, and that the disease is difficult t…
No cases of leprosy have been registered in Serbia for many years, Dr. Dragana Plavsa, an epidemiologist with the Batut Institute of Public Health, said today. Plavsa added that leprosy could appear in our country, but only as an imported case, and that the disease is difficult t…
Despite being eliminated as a public health problem in the late 1980s, leprosy and its long-term impacts remain a persistent health challenge in Papua New Guinea, Kiribati, and Fiji. An Australian non-profit pharmaceutical developer says its treatment targeting type 2 leprosy rea…
REPUBLIKA.CO.ID, JAKARTA -- Indonesian President Prabowo Subianto has given his full support to the Sasakawa Foundation, which is committed to helping Indonesia eliminate leprosy. This was announced by Yohei Sasakawa, WHO Honorary Ambassador for Leprosy Elimination and Chairman o…
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