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diphtheria
disease
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Science & Tech
diphtheria, acute infectious disease caused by the bacillus Corynebacterium diphtheriae and characterized by a primary lesion, usually in the upper respiratory tract, and more generalized symptoms resulting from the spread of the bacterial toxin throughout the body. Diphtheria was a serious contagious disease throughout much of the world until the late 19th century, when its incidence in Europe and North America began to decline and was eventually reduced even further by immunization measures. Before then, various other measures were tried—doctor and American statesman Josiah Bartlett (1729–95), for instance, was one of the first physicians to use quinine, extracted from Peruvian ...(100 of 852 words)