maybe my memory is foggy about the links i read on this site......maybe it said only adults recently vaccinated were capable of transmitting pertussis without symptoms...hmmm
emmy, read Warfel
To test our hypothesis, infant baboons were vaccinated at 2, 4, and 6 mo of age with aP or whole-cell pertussis (wP) vaccines and challenged with B. pertussis at 7 mo. Infection was followed by quantifying colonization in nasopharyngeal washes and monitoring leukocytosis and symptoms. Baboons vaccinated with aP were protected from severe pertussis-associated symptoms but not from colonization, did not clear the infection faster than naïve animals, and readily transmitted B. pertussis to unvaccinated contacts. Vaccination with wP induced a more rapid clearance compared with naïve and aP-vaccinated animals.
these infants, that had just,
completed the series "readily transmitted."
The aP vaccine will not prevent colonization or transmission. That's why children are up to 6 doses DTaP/Tdap's between the ages of 2mos and the 11 or 12 years.
“This disease is back because we didn’t really understand how our immune defenses against whooping cough worked, and did not understand how the vaccines needed to work to prevent it,” said Christopher J. Gill
, associate professor of global health and lead author of the article. “Instead we layered assumptions upon assumptions, and now find ourselves in the uncomfortable position of admitting that we may made some crucial errors. This is definitely not where we thought we’d be in 2017.”
But vaccines are safe and effective. The children who are behind on one
of the 6 aP vaccines will be counted as unvaccinated, in the media, and blamed for the spread. Heck, they may be fully vaccinated for pertussis and only behind on a single vaccine for something unrelated to pertussis. Still get the blame. But we're all crazy.
Parents who are choosing not to vaccinate, need to be aware of this situation too. Your infant/child, is not going to be protected in a group of vaccinated children OR adults if pertussis is circulating. They are the safest in a group of those who have recovered from pertussis naturally.
Around 2/3 of the way down, Suzanne Humphries talks about pertussis. You might find it helpful
The pertussis component of the vaccine is a subunit. It will not shed for that reason.
This might be helpful for review
I hate to highjack the thread but this is a topic that people really need to understand
Thank you for presenting the opportunity to discuss it!