Vaccines may not be the moneymakers that drug firms like, but they have transformed U.S. health. A study looking at the prevaccine and postvaccine eras finds that of 13 childhood vaccinations, nine showed at least a 90 percent decline in death and in hospitalization rates. Today's nonimmunized child typically comes from a well-to-do family granted religious or philosophical exemptions, rather than from a poor family lacking insurance, as was the case in the past.
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