Why didn't people believe semmelweis' findings?

People didn't believe Ignaz Semmelweis' findings due to a combination of entrenched medical practices, lack of understanding of germ theory, and resistance to change. His emphasis on hand hygiene clashed with the prevailing belief that diseases were caused by miasma or "bad air," and many doctors felt insulted by the implication that they were responsible for the spread of infections. Additionally, Semmelweis faced significant opposition from his peers, which hindered the acceptance of his ideas during his lifetime.