section_path: 14th-century plague/Signs and symptoms/Pneumonic plague
section_name: Pneumonic plague
paragraph_text: Pneumonic plague
  
  Lodewijk Heyligen, whose master Cardinal Giovanni Colonna died of plague in 1348, noted a distinct form of the disease, pneumonic plague, that infected the lungs and led to respiratory problems. Symptoms include fever, cough and blood-tinged sputum. As the disease progresses, sputum becomes free-flowing and bright red. Pneumonic plague has a mortality rate of 90–95%.