Our Symptom checker provides clinical advice on what to do next based on your symptoms.
Pneumonia is an infection of the lungs that can be very serious. It’s often caused by bacteria or viruses. Learn how to prevent getting pneumonia.
Legionnaires' disease is a severe and sometimes life-threatening form of pneumonia. Read more information about symptoms, diagnosis, treatment and prevention.
Severe acute respiratory syndrome (SARS)
Severe acute respiratory syndrome (SARS) is a viral disease that can cause severe pneumonia. Know what to do in a future outbreak.
Chest infections are common in people of all ages. Find out more about what causes chest infections, their symptoms and treatments.
Coronaviruses can cause several illnesses, from the common cold to serious respiratory infections and pneumonia. Learn more about coronaviruses.
A pleural effusion is an abnormal build-up of fluid in the space around the lungs. It can be caused by many things, most commonly heart failure, pneumonia and cancer.
Links to articles about pneumococcal disease.
Haemophilus influenzae type b (Hib)
Haemophilus influenzae type b (Hib) is a dangerous infection. It is rare in Australia, due to routine vaccination of babies. Learn about Hib symptoms.
Invasive staph infections
Invasive staphylococcus (staph) infections are less common than staph skin infections but usually more severe. Learn about the different types here.
Symptoms of serious illness in babies and children
If your child has a serious illness, it's important to get medical attention quickly. Learn how to recognise the symptoms and what to do.