Editing History of science (section)

===Germ theory===
Another important landmark in medicine and biology were the successful efforts to prove the [[germ theory of disease]]. Following this, [[Louis Pasteur]] made the first [[vaccine]] against [[rabies]], and also made many discoveries in the field of chemistry, including the [[optical isomerism|asymmetry of crystals]]. In 1847, Hungarian physician [[Ignaz Semmelweis|Ignác Fülöp Semmelweis]] dramatically reduced the occurrence of [[puerperal fever]] by simply requiring physicians to wash their hands before attending to women in childbirth. This discovery predated the [[germ theory of disease]]. However, Semmelweis' findings were not appreciated by his contemporaries and handwashing came into use only with discoveries by British surgeon [[Joseph Lister, 1st Baron Lister|Joseph Lister]], who in 1865 proved the principles of [[antisepsis]]. Lister's work was based on the important findings by French biologist [[Louis Pasteur]]. Pasteur was able to link microorganisms with disease, revolutionizing medicine. He also devised one of the most important methods in [[preventive medicine]], when in 1880 he produced a [[vaccine]] against [[rabies]]. Pasteur invented the process of [[pasteurization]], to help prevent the spread of disease through milk and other foods.<ref>{{cite book | last1=Campbell | first1=Neil A. | first2=Brad | last2=Williamson | first3=Robin J. | last3=Heyden | title=Biology: Exploring Life | publisher=Pearson Prentice Hall | year=2006 | url=http://www.phschool.com/el_marketing.html | isbn=978-0-13-250882-7 | oclc=75299209 | access-date=9 September 2008 | archive-date=2 November 2014 | archive-url=https://web.archive.org/web/20141102041816/http://www.phschool.com/el_marketing.html | url-status=live }}{{page needed|date=April 2018}}</ref>