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CHOLERA AND CIVILIZATION The reappearance of cholera in Europe raises again the question whether the twentieth century, like the nineteenth, is to witness pandemics of this disease sweeping over Western Europe and even extending at times into the United States and Canada. Fortunately we now possess very definite information concerning the modes of spread and usual vehicles of infection of this once greatly dreaded malady. It is, for example, an incontrovertibly established fact that a sewage-contaminated water supply is responsible in practically all cases for the epidemic prevalence of cholera. Scattered cases of the disease may occur in a city with a pure water supply, but no general and widespread infection need be feared so long as the water supply remains uncontaminated. The sudden outbreak of cholera which occurred in Hamburg in 1892, and which attacked about 17,000 persons and carried off 8,600, might well have been predicted by sanitarians on the basis
A Sat, study studied this question.