Yeah I was feeling the same way. By having that vax in a combo (along with two vaxes for diseases that have cases of <1 and <30 per year) it just makes it that much easier to pass. Maybe it's a good thing. Like you, I'll definitely feel better after 6 mos or 1yr. Of course, of my ped's 4 pertussis cases in the last two years (you know I got the lecture) two were adolescents, the other two were infants who were uncompletely vaxed, so if we got the vax we're not protected anyway when they're that young?