DTaP and Pertussis Question - Mothering Forums
I'm Not Vaccinating > DTaP and Pertussis Question
RMM1117's Avatar RMM1117 09:32 AM 12-03-2009
I have heard that getting the DTaP doesnt prevent transmitting Pertussis to someone else, is that true? And what is the reason it doesnt prevent transmission to someone else? Thx!

emma1325's Avatar emma1325 12:22 PM 12-03-2009
Here you go...check out the conclusion in this paper:

http://www.cdc.gov/ncidod/eid/vol6no5/pdf/srugo.pdf

"Conclusions
The effects of whole-cell pertussis vaccine
wane after 5 to 10 years, and infection in a
vaccinated person causes nonspecific symptoms
(3-7). Vaccinated adolescents and adults may
serve as reservoirs for silent infection and
become potential transmitters to unprotected
infants (3-11). The whole-cell vaccine for
pertussis is protective only against clinical
disease, not against infection (15-17). Therefore,
even young, recently vaccinated children may
serve as reservoirs and potential transmitters of
infection."
Sileree's Avatar Sileree 09:55 PM 12-04-2009
rabrog's Avatar rabrog 01:39 AM 12-05-2009
Pertusiss is one of the least effective vaccines out there.

Jenn
RMM1117's Avatar RMM1117 11:18 AM 12-05-2009
Thanks for the replies!
SFam's Avatar SFam 02:56 AM 12-06-2009
Quote:
Originally Posted by emma1325 View Post
Here you go...check out the conclusion in this paper:

http://www.cdc.gov/ncidod/eid/vol6no5/pdf/srugo.pdf

"Conclusions
The effects of whole-cell pertussis vaccine
wane after 5 to 10 years, and infection in a
vaccinated person causes nonspecific symptoms
(3-7). Vaccinated adolescents and adults may
serve as reservoirs for silent infection and
become potential transmitters to unprotected
infants (3-11). The whole-cell vaccine for
pertussis is protective only against clinical
disease, not against infection (15-17). Therefore,
even young, recently vaccinated children may
serve as reservoirs and potential transmitters of
infection."
the above refers to whole cell pertussis, which isn't used anymore. they now use acellular pertussis (the "a" in DTaP). i don't have an answer to your question, but wanted to point out that the paper quoted may not apply to acellular pertussis, but i'm not sure.
japonica's Avatar japonica 06:45 AM 12-06-2009
http://www.ncbi.nlm.nih.gov:80/pmc/articles/PMC1626510/

So, here's some aP info for you...

Quote:
The absolute incidence of pertussis among children aged less than 10 years was highest among infants (< 1 year) (Fig. 1). Except for 1999 and 2001, children less than 1 year and 1–4 years experienced the highest rates of pertussis. The introduction of the acellular vaccine in 1997 did not appear to be associated with a reduction in the incidence of pertussis among school-aged children (5–9 years) as expected.

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