The word microbe was not invented until 1878 and Louis Pasteur only developed his theory that infectious germs could be transmitted through the air in the 1850s.
Ang salitang mikrobyo ay nalikha lamang sa taong 1878 at nabuo ni Louis Pasteur ang kaniyang teorya na ang mga sakit ay nakahahawa sa pamamagitan ng hangin pagdating lamang ng dekadang 1850.