<s>[INST] Types of pneumonia [/INST] Pneumonia can be classified into two groups depending on the clinical presentation:

Community-acquired pneumonia (CAP). Community-acquired pneumonia is characterised by a rapid clinical onset, high fever, pain in one side or transient abdominal pain, rapid breathing (tachypnoea), cough and purulent or brownish phlegm. One example of this common type of presentation is pneumonia induced by Streptococcus pneumoniae (pneumococcus), which is considered the main pneumonia-causing microorganism worldwide.
Community-acquired pneumonia with an atypical clinical presentation. This is characterised by a less acute onset, low fever, a barely productive (dry) cough, diarrhoea and/or vomiting. Pneumonias caused by intracellular bacteria, e.g., Mycoplasma pneumoniae or Legionella pneumophila, are known as atypical pneumonias due to their unusual presentation. Source: Clinic Barcelona. Link: https://www.clinicbarcelona.org/en/assistance/diseases/pneumonia. Field: Lung Disease. Disease: Pneumonia </s>