Chancroid is a bacterial sexually transmitted infection (STI) caused by *Haemophilus ducreyi*. It is characterized by painful genital ulcers and primarily affects individuals engaging in unprotected sexual activity, particularly in regions with limited resources and specific populations globally. While less common in developed countries today, it remains a public health concern.
Transmission methods vary. Please consult CDC or WHO resources for specific information.
Contagious Period: Varies by disease
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Data sources: BEACON, ProMED, WHO, CDC, and 50+ national health agencies
Our AI-powered surveillance hasn't detected significant Chancroid activity in the past 30 days.
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Currently, Chancroid case counts are within baseline expectations globally. However, diseases can emerge rapidly, which is why continuous monitoring is critical.
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Trusted information from leading health organizations
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: 2026-03-05
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