John Snow Take the handle off the pump!! Kathleen Tuthill http://www.ph.ucla.edu/epi/snow/snowcricketarticle.html trace an outbreak of cholera removed the pump handle on a cholera-infested well http://www.ph.ucla.edu/epi/snow/snowcricketarticle.html John Snow Kathleen Tuthill Dr John Snow removed the pump handle on a cholera-infested well preventative action John Snow Or remove a pump handle John Snow established Take the handle off the pump!! according to the UCLA Department of Epidemiology John Snow and the Broad Street Pump врач Джон Сноу в 1854 году установил John Snow and the Broad Street pump