websites for controlling spread of disease

Louis Pasteur

http://www.bbc.co.uk/history/historic_figures/pasteur_louis.shtml

Semmelweiss

http://www.youtube.com/watch?v=T73PYNyyeiI

Florey & chain

http://www.schoolshistory.org.uk/floreyandchain.htm

Flemming

http://www.nobelprize.org/nobel_prizes/medicine/laureates/1945/fleming-bio.html