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Pertussis - does the vax really work? - Page 3

post #41 of 46
Quote:
Originally Posted by crazy_eights View Post
But we really don't seem to have many babies getting pertusis.
data please
post #42 of 46
Quote:
Originally Posted by mamakay View Post
No, the pertussis vax hasn't pushed pertussis into an older age group. It would have to be more effective to do that. (whereas, the chickenpox vaccine does work better, and really is doing that).

The whole "emergence of pertussis in teens and adults" is a diagnostic phenomenon. They used to think pertussis was only a disease of childhood, but once they figured out that a lot of those bad, lingering coughs adults get is actually pertussis, it started being diagnosed more in that age group.

so are you saying that the adults(who were vaxed as kids) who get that 'lingering cough', and are finally diagnosed with pertussis have lost their immunity from vaxes taken way back then?

is immunity eventually lost 100%?


(i feel like i'm going around in circles....)
post #43 of 46
Quote:
Originally Posted by Spectrolite View Post
to add to this then...

quoted from the post by LilacMama titled "Help me decide about DTaP"

"My daughter is 7 weeks old and I'm considering the DTaP vaccine for her. I've read through Dr. Sears' book and the CDC's Pink Book.

Help me out here -- The Pink Book says that 85% of the deaths related to pertussis were in infants under 3 months of age. Well, they don't start vaccinating until 2 months of age! Furthermore, it says that the vaccine is 70%+ effective AFTER 3 doses. Ummmm? By the time she's 6 months old and has gotten a full 3 doses, the chances of her having a long-term complication from the disease are VERY low -- right? "

i.e. nobody can really "save" the infants from pertussis, regardless of whether or not they are in vaccinated communities?
Well, according to the little evidence out there, even one dose probably does have some protective effect, however small, so the vaxes between 2 and 4 or 6 months probably does reduce pertussis mortality in infants by some degree. We're not talking about huge numbers...maybe 10-50 babies a year out of our 4 million birth cohort. But I bet it happens.

No way to really know for sure, though.
post #44 of 46
Quote:
Originally Posted by Spectrolite View Post
so are you saying that the adults(who were vaxed as kids) who get that 'lingering cough', and are finally diagnosed with pertussis have lost their immunity from vaxes taken way back then?

is immunity eventually lost 100%?


(i feel like i'm going around in circles....)
Not just that, but they probably lost their "natural immunity", too. We're all exposed (or mildly infected with) pertussis every 3-5 years or so. It's when you go "too long" without running into pertussis, and THEN catch it again, that you'll get a bad case.

http://pediatrics.aappublications.or...ull/115/5/1422

Quote:
Household-contact studies have indicated that infection without illness is common.40,41 These data suggest that frequent exposures maintain antibody levels in many persons at protective levels. Illness only occurs when antibody values have fallen below critical values, and then exposure occurs.
post #45 of 46
Quote:
Originally Posted by Spectrolite View Post
data please
Relevant to that discussion, is this:

http://insidevaccines.com/wordpress/...-unvaccinated/
post #46 of 46
Quote:
Originally Posted by Super Glue Mommy View Post
there are a few issues to consider. people have started taking better care of themselves for one. and also, when a vaccinated child catches something its less likely to be diagnosed correctly as they will ASSume that it "can't" be that because the child is vaccinated against it. which effects the numbers in several ways (effeciacy as well as reported cases) and also results in these things not being properly treated.
I totally agree! When I took e to the doc the other day I asked if it COULD be pertusis ( since J is a year this week) and he told me " oh no, it couldn't be, there is a vax for that ( we don't vax) and that he is to old ( he will be 4 in Apr)
WOW I am glad that they go to school for so long :eyeroll:
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