Analysis of information sources in references of the Wikipedia article "History of Philadelphia" in English language version.
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has generic name (help)Health authorities and municipal officials in this and other large cities were particularly alarmed over the extraordinarily high incidence of tuberculosis among the black citizenry. In 1905, health experts in Philadelphia described tuberculosis among blacks in the city as 'exceedingly prevalent.' Between 1910 and 1920, according to the records of the city's health department, the proportion of blacks who developed tuberculosis was four to six times the proportion of white citizens who developed the disease.
Health authorities and municipal officials in this and other large cities were particularly alarmed over the extraordinarily high incidence of tuberculosis among the black citizenry. In 1905, health experts in Philadelphia described tuberculosis among blacks in the city as 'exceedingly prevalent.' Between 1910 and 1920, according to the records of the city's health department, the proportion of blacks who developed tuberculosis was four to six times the proportion of white citizens who developed the disease.
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has generic name (help)Health authorities and municipal officials in this and other large cities were particularly alarmed over the extraordinarily high incidence of tuberculosis among the black citizenry. In 1905, health experts in Philadelphia described tuberculosis among blacks in the city as 'exceedingly prevalent.' Between 1910 and 1920, according to the records of the city's health department, the proportion of blacks who developed tuberculosis was four to six times the proportion of white citizens who developed the disease.