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Living with Hendra virus infection

A rare virus infection passed from horses to people, starting with flu-like symptoms.

Understanding Hendra virus infection

Hendra virus infection is a rare viral illness caused by the Hendra virus after close contact with the bodily fluids of infected horses.

Flu-like symptoms begin about one week after contact. They include fever, muscle aches, headaches, and tiredness. Brain and nerve symptoms such as vertigo, confusion, and loss of balance have also been reported, along with breathing problems. It can occur at any time in life.

Signs & symptoms

Symptoms vary from person to person. GARD describes these signs:

  • Fever
  • Muscle aches (myalgia)
  • Headache
  • Tiredness (lethargy)
  • Vertigo and confusion
  • Poor coordination (ataxia)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Brain and nervous system specialists (neurologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What contact with horses puts a person at risk?
Which tests confirm Hendra virus infection?
Which symptoms should send me to the doctor quickly after horse contact?

Quick facts

Symptoms usually startany time in life

It is caused by the Hendra virus, spread through close contact with the bodily fluids of infected horses.

InfectiousNeurological

Also known as: hendra henipavirus caused disease or disorder; hendra henipavirus disease or disorder; hendra henipavirus infectious disease; infection caused by hendra virus

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Hendra virus infectionGARD ID 21448 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Hendra virus infection.

Explore the Hendra virus infection blog

Explore research for Hendra virus infection

Explore actively recruiting Hendra virus infection studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Hendra virus infection with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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I can help you find recruiting Hendra virus infection studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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