¯

What is the Legionnaires' Disease?

Dec. 30, 2025

A Legionnaires’ disease outbreak has prompted a health alert in Sydney’s central business district recently, with authorities urging people to remain vigilant for symptoms.

About Legionnaires' Disease:

  • It is a severe form of a lung infection (pneumonia) caused by a bacterium known as legionella.
  • The disease got its name when a group of people at an American Legion convention became ill with this type of pneumonia in 1976.
  • Transmission:
    • Legionella is found naturally in freshwater, such as lakes and rivers. It can also be found in soil.
    • Most people who catch Legionnaires’ disease breathe in the bacteria from water or soil.
    • You usually can’t get infected by drinking water that contains the bacteria unless you aspirate it (accidentally breathe the water into your lungs).
    • It is not contagious, meaning it is not spread from person to person.
    • Older adults, people with weakened immune systems, and people who smoke have a higher risk of getting Legionnaires’ disease.
  • Symptoms:
    • Legionnaires’ disease causes pneumonia-like symptoms that start two to 14 days after exposure to Legionella.
    • Patients usually present with fever, cough, shortness of breath, tiredness, headache, muscle pain, and may have gastrointestinal symptoms such as abdominal pain and diarrhoea.
    • In severe cases, neurological symptoms (e.g., confusion) and respiratory failure may occur, and some cases may result in death.
  • Treatment:
    • Treating right away with antibiotics most often cures Legionnaires’ disease.
    • But some people still have problems after treatment.
    • Currently, there is no vaccine available for LD.

Latest Current Affairs

See All

Enquire Now