The modern vaccine for whooping cough becomes less effective as children age, a new study shows
Infants and children are supposed to receive five doses of the DTaP vaccine before age 7. Four vaccines are administered before 18 months, and another is given when a child is 4 to 6 years old. A similar booster shot is given when a child is 11 or 12 years old.
Dr. Kathryn Edwards, a professor of pediatrics at Vanderbilt University who was not involved in the study, wrote in an editorial that health care organizations and the CDC must"continue to monitor the pertussis burden in the United States and work with scientists to improve the existing pertussis vaccines."That research is ongoing, Edwards noted. One technique currently being studied involves increasing the number of antigens -- the bits of B.
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