World Pneumonia Day: Causes, symptoms to look after

Bacteria: Streptococcus pneumoniae is the most common bacterial cause of pneumonia, but other bacteria such as Haemophilus influenzae and Staphylococcus aureus can also be responsible

Viruses: Influenza (flu) viruses, respiratory syncytial virus (RSV), and rhinoviruses are common viral causes of pneumonia

Fungi: In some cases, fungi such as Pneumocystis jirovecii can cause pneumonia, particularly in individuals with weakened immune systems

Cough: Pneumonia often presents with a persistent cough that may produce phlegm or pus

Fever: A high fever is a common symptom of pneumonia, particularly in bacterial cases

Shortness of Breath: Difficulty breathing or shortness of breath may occur, especially during physical activity

Chest Pain: Chest pain that worsens with breathing or coughing is a common symptom