With the advent of penicillin and other antibiotics, modern surgical techniques, and intensive care in the 20th century, mortality from pneumonia, which had approached 30%, dropped precipitously in the developed world.
Dengan kemajuan penicillin dan antibiotik lainnya, teknik pembedahan modern, dan perawatan intensif pada abad ke-20, mortalitas akibat pneumonia, mendekati 30%, menurun di negara-negara maju.