Human infection by orthopoxvirus

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Human infection by orthopoxvirus

ORPHA:438279Disease

What it is

A rare viral disease characterized by fever, malaise, lymphadenopathy, and a maculopapular exanthema spreading from the site of infection to other regions of the body. The skin lesions eventually dry out and may leave behind scars. The most relevant orthopox species for human disease after the eradication of the variola virus, which was responsible for smallpox, are the monkeypox virus and the cowpox virus. Infections with these viruses typically take a benign course.

Key facts

Prevalence
<1 / 1 000 000 (Europe)
Age of onset
All ages
Inheritance
Not applicable
Classified as
Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

ICD-10 codes

B03ICD-10 uses a narrower term
B04ICD-10 uses a narrower term
B08.0ICD-10 uses a narrower term

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

MONDO 0018583UMLS C1532229

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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