No, you argued that increased hygiene did all the heavy lifting, as medical treatment would have involved vaccines and medicines that were developed after the microscope that convinced people that germs were a "real" thing combined with the fact they could now offer medicines and vaccines that kept the germs at bay. Hygiene was the natural course of action hundreds of years before the invent of the microscope, medicines and vaccines, no amount of natural immunity would have kept many people from dying prior to that.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2652987/