During the nazi occupation, the establishment was used for Wehrmacht soldiers. After WWII, since the main building was still occupied as a military facility, the hospital was reorganized for a few months around two barracks by Dr. Władysław Baranowski, head of the city health department. In 1949, the infectious diseases ward was moved to the Hospital for Infectious Diseases at 10 Świętego Floriana Street and the institution transformed into the "Municipal Pulmonary Hospital": with 144 beds, Władysław Baranowski was raised to the position of director.