Originally Posted by nicolebeth
We're not inclined to get DTaP for our infant, DS2. But, I was wondering if there is any information out there whether the first dose (the one the CDC recommends getting at two months) is meant to confer any amount of immunity. We're going to the two-month appointment in a few weeks, and I can imagine being told that even that first dose will do "something". When looking into this five years ago with DS1, I thought I saw that it takes three doses to have any immunity--and, by that point, the baby is out of the danger range (and wasn't protected at all by the first three doses until all three were received). I looked at the pink book, and either the 2009 edits took that part out or I read this somewhere else.
I've been wondering about this as well. Our pediatrician told us one shot was about 50/50 and two pushed the numbers to 85% or so. I'm not sure where he got his information, I should have asked.
I've been looking myself and haven't seen anything online.
DTaP is all that our little guy has had. We're in an area with pertussis and it worried me. We did one dose at 2 months and ds is now 4 months and we did another. I would have skipped the second but ugh. I just wasn't sure. It's so hard to know.
In my googling I did find an article w/ a link to a package insert but it still doesn't offer %'s after each individual vaccine, just %'s after the three doses. It shouldn't be hard info. to find. The fact that it is makes me leery about the importance of all three.
GL in your decision, if I see any additional info. I'll post here. I'm really curious also.