.

Scientific American Journal:

Baboon Study Reveals New Shortcoming of Pertussis Vaccine

Recent studies have shown that immunity from the acellular (pertusis/whooping cough) vaccine wanes relatively quickly. In 2012, for instance, a New England Journal of Medicine study determined that children’s odds of catching pertussis rose by 42 percent each year after receiving the final dose of DTaP, usually given between ages four and six, in the childhood vaccine series. 

Read study…