This guideline provides recommendations for the management of suspected and confirmed community- and hospital-acquired pneumonia in adults. However, it does not provide recommendations on areas of care where best practice is already established, such as diagnosis using chest X-ray. This guideline does not cover bronchiectasis complicated by pneumonia, people younger than 18 years, or patients who acquire pneumonia while intubated or in an intensive care unit, who are immunocompromised, or in whom management of pneumonia is an expected part of end-of-life care. his guideline covers diagnosing and managing community- and hospital-acquired pneumonia in adults. It aims to improve accurate assessment and diagnosis of pneumonia to help guide antibiotic prescribing and ensure that people receive the right treatment.