pneumonia (MONDO_0005249, a Monarch Disease Ontology term) is an acute, acute and chronic, or chronic inflammation focally or diffusely affecting the lung parenchyma, caused by an infection in one or both of the lungs (by bacteria, viruses, fungi, or mycoplasma.). Symptoms include cough, shortness of breath, fevers, chills, chest pain, headache, sweating, and weakness.