Pneumonia causes
Pneumonia is primarily caused by infectious agents, including bacteria, viruses, fungi, and, less commonly, parasites. Here are the main causes of pneumonia. Bacterial Pneumonia The most common bacterial cause of pneumonia is Streptococcus pneumoniae, also known as pneumococcus. Other bacteria that can cause pneumonia include Haemophilus influenzae, Staphylococcus aureus, Legionella pneumophila, and Mycoplasma pneumoniae. Viral …