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Bird flu (avian influenza)

Also called: Bird flu, avian influenza, H5N1

Flu viruses from birds that rarely infect people, mostly those working with sick poultry or dairy cows.

RiskContact with sick birds or cattle

Overview

Bird flu rarely spreads between people.

People with flu symptoms after contact with sick birds or cattle should tell their doctor.

Symptoms

Common signs:

  • Fever, cough

Less common

  • Red eyes
  • Body aches

When to get medical care

Call 911Trouble breathing.
Get care todayFlu symptoms after bird or cattle contact.
See a doctor soonSymptoms that last or keep coming back.

Causes

Bird flu virus.

Does it spread or run in families?

  • Yes, it can spread from person to person.
  • How it spreads: coughs or sneezes.
  • Washing hands often and staying home when sick help protect others.

Who is more likely to get it

  • Poultry and dairy workers

Diagnosis

A clinician asks about your symptoms and may order tests.

The exam

A physical exam.

Tests

Tests, if needed:

  • Nose swab:

Treatment

Treatment depends on the cause and how severe it is.

Self-care

  • Rest
  • Isolate

Medicines

Medicines that may help:

MedicineHelps withGood to know
Antivirals
Flu

OwieClear doesn't give doses: follow the label or your healthcare professional. Medicine names here are examples, not a full list.

Which doctor treats this

  • Start with your primary care provider (family doctor or internist).
  • They may send you to an infectious disease specialist, for hard-to-treat infections.

Back to school, work, or sports

  • Stay home until you've had no fever for 24 hours without fever medicine and you're feeling better.
  • For the next 5 days, wash hands often and wear a mask around others.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • Some infections can pass to the baby during pregnancy or birth. Tell your provider if you've been exposed.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

Outlook

Most recent U.S. cases were mild.

Getting ready for your visit

Bring a list of your symptoms and medicines.

What to bring

  • A list of your medicines and supplements
  • Notes on when symptoms started and what makes them better or worse

Questions to ask

  • What's causing this?
  • What treatment do you recommend?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Bird flu (avian influenza)

Sources

Last updated 2026-11-12.