See below: Edwin klebs (1834-1913), a swiss-german pathologist, identified and described the bacterium that causes diphtheria in 1883. (just to point out the devastation that diphtheria caused, in 1883, the diphtheria death rate was 125 per 100, 000 people in new york city.) a year later, german bacteriologist friedrich loeffler (1852-1915) http://www.Historyofvaccines.Org/content/blog/early-uses-diphtheria-antitoxin-united-states.
Answered 12/29/2013
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