Pertussis has made a big comeback in recent years. “Most pertussis-related deaths occur in infants too young to be immunized. . . . All pregnant women are advised to get the Tdap vaccine, which protects against tetanus, diphtheria and pertussis, or whooping cough. . . . A different version of the vaccine is given only …
October 26, 2017
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October 23, 2017
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