MBI 131 Exam 2 Strautman questions with correct answers

miasmas Answer "bad air or vapors" that people originally thought caused contagious disease Germ theory of Disease Answer Evidence starts to build that microbes, rather than sin or miasmas, cause contagious diseases Ignaz Semmelweis (1840's) Answer -Suspected that doctors were transmitting childbed fever to women during childbirth -Required hand washing in chlorine solution -Incidence of childbed fever dropped from 50% to 1% -Was not believed and was ridiculed by other doctors John Snow (1850's) Answer -Cholera is a life-threatening diarrheal disease, most people in the 1800's thought the cause was bad air. -Severe epidemics in London and other cities. -Snow mapped distribution of cholera cases in London: hoped to determine cause of outbreak. John Snow's survey Answer -He found that 500 fatal cases occurred in 10 days within 250 yards of a certain intersection. -Conducted a survey: -People got water fro the Broad Street pump = people with cholera. -People who got water from other sources but lived in the same area were not sick at the same rate.