pertussis attack rate in children and teens, vaxxed versus unvaxxed - Mothering Forums

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#1 of 2 Old 03-28-2014, 06:59 PM - Thread Starter
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I saw this on another thread, and did not want it to get lost.


I cannot quote it, as it is a table and is not copying and pasting well. 


The attack rate of pertussis in unvaxxed children in the above study is only double that of the vaxxed.  


This seems shockingly low.  Up until now, the number I had frequently seen was 8 - that the unvaxxed were 8 times more likely to get pertussis than the vaxxed (if exposed):


"Investigation of the Washington epidemic demonstrates multiple B. pertussis strains causing infection, primarily in vaccinated persons. Given the high transmissibility of B. pertussis, a proportion of vaccinated persons remains susceptible and can become infected during a pertussis outbreak. Unvaccinated children have at least an eightfold greater risk for pertussis than children fully vaccinated with DTaP (7)"

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#2 of 2 Old 03-29-2014, 12:22 PM
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I'm perfectly ok with those odds considering DD if far beyond infant frailty and especially considering DTaP was the vax she reacted most violently to.

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