Test: Vaccines Video #4 of 8.

Polio and DPT vaccines

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Select the correct answer below.

DPT vaccines mandated since the 1940s have

A. Completely eradicated whooping cough from the US

B. Had no effect on recent outbreaks of pertussis

C. Immunized children from the possibility of pertussis

D. been tested repeatedly by the FDA in risk/benefit studies

E. never contained mercury that exceeded EPA safe levels