How does Legionnaires get diagnosed?

How does Legionnaires get diagnosed?

The most commonly used laboratory test for diagnosis of Legionnaires’ disease is the urinary antigen test (UAT), which detects a molecule of the Legionella bacterium in urine. If the patient has pneumonia and the test is positive, then you should consider the patient to have Legionnaires’ disease.

Can blood test detect Legionella?

Legionella is a type of bacteria that can cause a severe form of pneumonia known as Legionnaires’ disease. Legionella tests look for these bacteria in urine, sputum, or blood. Legionnaires’ disease got its name in 1976 after a group of people attending an American Legion convention became ill with pneumonia.

Is Legionnaires disease hard to diagnose?

Doctors most often diagnose Legionnaires’ disease the same way they detect other forms of pneumonia, with a chest X-ray and by symptoms. Legionnaires’ disease can look similar to regular pneumonia on a chest X-ray. Your doctor may test a sample of your urine or phlegm (mucus) to confirm you have Legionnaires’ disease.

How does one become infected with Legionella?

People can get Legionnaires’ disease or Pontiac fever when they breathe in small droplets of water in the air that contain the bacteria. Less commonly, people can get sick by aspiration of drinking water containing Legionella. This happens when water accidently goes into the lungs while drinking.

What organism causes Legionnaires disease?

Legionella bacteria can cause a serious type of pneumonia (lung infection) called Legionnaires’ disease. Legionella bacteria can also cause a less serious illness called Pontiac fever.

How long do Legionella antibodies last?

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
Frozen 14 days

What medical specialist is the best trained to diagnose and treat Legionnaires disease?

You’re likely to start by seeing your family doctor. In some cases, you might be referred to a doctor who specializes in treating lung disease (pulmonologist) or infectious diseases, or you might be advised to go to an emergency department.

Who is more susceptible to Legionella?

The risk increases with age but some people are at higher risk including: people over 45 years of age. smokers and heavy drinkers. people suffering from chronic respiratory or kidney disease.

Where is Legionella commonly found?

The bacterium Legionella pneumophila and related bacteria are common in natural water sources such as rivers, lakes and reservoirs, but usually in low numbers. They may also be found in purpose-built water systems such as cooling towers, evaporative condensers, hot and cold water systems and spa pools.

How do I know if I have Legionella pneumophila?

Cough, which might bring up mucus and sometimes blood. Shortness of breath. Chest pain. Gastrointestinal symptoms, such as nausea, vomiting and diarrhea.

Is Legionnaires disease acute or chronic?

Symptoms. Legionellosis is a generic term describing the pneumonic and non-pneumonic forms of infection with Legionella. The non-pneumonic form (Pontiac disease) is an acute, self-limiting influenza-like illness usually lasting 2–5 days. The incubation period is from a few and up to 48 hours.

What happens to lungs with Legionnaires disease?

Legionnaires’ disease can lead to a number of life-threatening complications, including: Respiratory failure. This occurs when the lungs can’t provide the body with enough oxygen or can’t remove enough carbon dioxide from the blood.

Is Legionnaires disease long term?

According to Victor L. Yu, MD, an infectious disease specialist and Legionnaires’ disease expert, “As with any acute illness, patients who recover from Legionnaires’ disease can suffer long term side effects. The most common are fatigue and lack of energy for several months.”

How to test for Legionella?

Testing for Legionella in Water. In order to ensure that you stay apprised of the Legionella situation in your facility,you must be sure to regularly test the water.

  • Take Routine Building Water Samples.
  • Give Water Samples to an Accredited Microbiology Lab.
  • How to test for Legionnaires?

    – Other patients with healthcare-associated Legionnaires’ disease diagnosed in the past 12 months – Positive environmental tests for Legionella – Current changes in water quality that may lead to Legionella growth (such as low chlorine levels or nearby construction)

    What are the signs and symptoms of Legionnaires disease?


  • Headache
  • Muscle pain
  • A fever that might be 107 F or higher
  • What are the long-term effects of Legionnaires’ disease?


  • Short term memory loss
  • Long term memory loss
  • Fatigue
  • Onset of asthma (although it is unclear,when this occurs,whether Legionnaires’ disease is the sole cause)