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March 3, 1900


JAMA. 1900;XXXIV(9):565. doi:10.1001/jama.1900.02460090051014

On account of the simplicity of the conditions in rural-communities, the spread of infectious diseases is more readily followed in the country than in the cities. Ricochon2 had occasion to observe, in his own practice in the country, a small focus of tuberculosis that appeared in the family of a farmer and spread to several persons in close relation with the affected family. The father and three daughters succumbed to pulmonary tuberculosis. Two neighbor women, one an aunt of the girls, also became tuberculous and died. These two women visited the patients frequently during their illness. Five deaths from tuberculosis then occurred in the family of the aunt and the son of the other neighbor woman also acquired tuberculosis of the lungs. Ricochon would explain the more than usually energetic tuberculosis witnessed on the score of an exalted virulence of the tubercle bacillus. The presence of conditions that especially