General information, not a diagnosis Method and limitations

Fact sheetVirus

Rift Valley fever

Rift Valley fever is a viral zoonosis. Exposure to blood or organs of infected animals and mosquito bites can transmit infection.

Documentary Enrichment: · General information

Essentials

Viral zoonose affecting mainly farmed animals and transmitted to humans by contact or mosquitoes.

Agent
Phlebovirus of the Rift Valley
Transmission or exposure
Animal/zoonosis · Vector

Situation and vulnerability

Farmers, veterinarians and slaughterhouse staff are involved. An important piece of information to report is episodes of disease or abortion in livestock.

Signs and limits of their interpretation

Infection can be discreet or cause fever and pain. Eye, neurological or hemorrhagic forms, rarer, may appear.

Diagnosis and monitoring

The confirmation is based in particular on RT-PCR or antibody tests. Analysis and management are organized medically; the first signs are similar to other fevers.

Official sources consulted on . Documentary summary, without medical rereading.

Check these benchmarks in the WHO reference →

Prevention and care

Protect professional contacts with animal tissues, avoid unpasteurized products and reduce bites. A visual or neurological disorder after a fever requires rapid assessment.

Practical issues

Does a mild illness exclude subsequent eye complication?

No: WHO describes visual disorders that may occur after the first symptoms. Any loss of vision should be reported even after general improvement.

Preparing for an exchange with a professional

  • Tissue or bedding contacts
  • Place and dates of stay
  • Fever and then changes of vision

Bring the full minutes and dates. This information facilitates evaluation; its collection must not delay an urgent appeal.

Individual decisionThe choice of a test, treatment or prevention depends on the local situation and recommendations. In case of distress, call 911.
A calm clinical consultation desk, blank folder, glass of water and an unmarked notebook. AI-generated illustration.
Prevention illustration — Fièvre de la vallée du Rift — A calm clinical consultation desk, blank folder, glass of water and an unmarked notebook.
Image generated by artificial intelligence. AI illustration; it does not depict a disease, biological agent or diagnosis.

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Related fact sheets

These sheets share ways or contexts of exhibition in our catalogue. This reconciliation does not establish a differential diagnosis.

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Further reading

These publications help you verify the concepts discussed. Disease records and directory entries each identify their sources.

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