Two diff diseases. These are two different diseases. Pneumonia is an infection in the lung that causes fluid to collect within the air spaces (maybe w/in a lobe or more diffuse). Rheumatic heart disease is caused by the body attacking the valves of the heart in response to an untreated/inadequately treated streptococcal (most often group a) infection ("strep throat" or other).
Two separate. Processes.
See details. Pneumonia is generally an infectious disease and rhd is an autoimmune process.