How did Joseph lister improve the survival rate of his parents?

Joseph Lister significantly improved surgical outcomes by introducing antiseptic techniques, which dramatically reduced postoperative infections. He advocated for the use of carbolic acid to sterilize surgical instruments and clean wounds, thereby minimizing the risk of sepsis. While Lister's direct impact on his parents' survival is not historically documented, his pioneering work laid the foundation for safer surgical practices that benefitted countless patients, including his contemporaries.