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Related Experiment Videos

Cowpox with severe generalized eruption, Finland.

Paula M Pelkonen1, Kyllikki Tarvainen, Arja Hynninen

  • 1Faculty of Veterinary Medicine, Helsinki, Finland. Paula.Pelkonen@helsinki.fi

Emerging Infectious Diseases
|January 14, 2004
PubMed
Summary
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A severe cowpox infection was diagnosed in an atopic child. The virus strain was linked to a Russian isolate, with potential transmission from the family dog, highlighting zoonotic risks.

Area of Science:

  • Veterinary Virology
  • Human Infectious Diseases
  • Epidemiology

Background:

  • Cowpox is a zoonotic viral infection caused by the cowpox virus, a member of the Orthopoxvirus genus.
  • While typically causing localized lesions in animals, severe or generalized disease can occur, particularly in immunocompromised or atopic individuals.
  • Orthopoxvirus infections in humans and animals are monitored for public health surveillance.

Observation:

  • A 4-year-old atopic girl presented with a severe, generalized cowpox eruption.
  • Diagnostic methods included electron microscopy, virus isolation, PCR, and serological testing for immunoglobulin M and IgG antibodies.
  • The patient's dog exhibited orthopoxvirus-specific antibodies, suggesting a potential animal-to-human transmission route.

Findings:

Related Experiment Videos

  • Genetic analysis of the cowpox virus hemagglutinin gene revealed clustering with a Russian cowpox virus strain and distant relation to other cowpox and vaccinia strains.
  • High orthopoxvirus seroprevalence was noted in Finnish wild rodents (0%-92%) and in humans over 50 years old (100%), decreasing in younger age groups.
  • The case highlights the potential for severe cowpox manifestations in atopic individuals and underscores zoonotic transmission pathways.

    • Implications:

    • This case emphasizes the importance of considering cowpox in differential diagnoses for severe, generalized skin eruptions, especially in atopic patients.
    • Identifying the source of infection, such as a pet dog, is crucial for preventing further transmission within households and communities.
    • Understanding the epidemiology of orthopoxviruses in wildlife and human populations is vital for effective public health preparedness and response strategies.