• What impact have vaccines had in the 20th century?

    5 monthes ago - By World Bank

    Via The Wall Street Journal The number of infected people, measured over 70-some years and across all 50 states and the District of Columbia, generally declined after vaccines were introduced. The heat maps show number of cases per 100,000 people. Full series of interactive visualizations with data on Measles, Hepatitis A, Mumps, Pertussis, Polio, Rubella and Smallpox. Data from the CDC and Project Tycho
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