Complex sentence: After 1943, when Albert Schatz, a graduate student at Rutgers University, discovered Streptomycin, the first true cure for tuberculosis, sanatoriums began to close, or (as in the case of the Paimio Sanatorium) were transformed into general hospitals.
Split into simpler sentences: After 1943, when Albert Schatz, a graduate student at Rutgers University, discovered streptomycin, the first true cure for tuberculosis, sanatoriums began to close. As in the case of the Paimio Sanatorium, many were transformed into general hospitals.