Tag Archives: Pertusis

Pertussis Infection in Fully Vaccinated Children in Day-Care Centers, Israel

CDC Emerging Infectious Diseases

The effects of whole-cell pertussis vaccine wane after 5 to 10 years, and infection in a vaccinated person causes nonspecific symptoms (37). Vaccinated adolescents and adults may serve as reservoirs for silent infection and become potential transmitters to unprotected infants (311). The whole-cell vaccine for pertussis is protective only against clinical disease, not against infection (1517). Therefore, even young, recently vaccinated children may serve as reservoirs and potential transmitters of infection.

We found that immunity does not even persist into early childhood in some cases. We also observed that DPT vaccine does not fully protect children against the level of clinical disease defined by WHO. Our results indicate that children ages 5-6 years and possibly younger, ages 2-3 years, play a role as silent reservoirs in the transmission of pertussis in the community. Read Study…

Study shows: Newly vaccinated people carry & spread the disease to non-vaccinated

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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…