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Living with Pontiac fever

A mild flu-like illness caused by Legionella bacteria that does not cause pneumonia.

Understanding Pontiac fever

Pontiac fever is a mild form of legionellosis that causes flu-like symptoms but not pneumonia.

People may have nausea, muscle aches, fever, cough and headache. GARD says it can occur at any age.

Signs & symptoms

Symptoms vary from person to person. GARD lists these:

  • Fever
  • Muscle aches
  • Headache
  • Cough
  • Tiredness (fatigue)
  • Nausea

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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
How can Pontiac fever be told apart from Legionnaires disease or the flu?
What tests can confirm it?
Should others who share my home or workplace be checked?

Quick facts

Symptoms usually startany time in life

GARD describes it as a mild form of legionellosis, but doesn't give more detail about the cause.

Infectious

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Pontiac feverGARD ID 13588 · 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 Pontiac fever.

Explore the Pontiac fever blog

Explore research for Pontiac fever

Explore actively recruiting Pontiac fever studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Pontiac fever 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 Pontiac fever 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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