Two diff diseases
These are two different diseases.
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).
Answer assisted by David Miller, Medical Student