OK--have done a lot more reading this morning--and here is my grand conclusion (ta-da!)...
1. Vaccination/boosters of adults and teens does not prevent transmission (from vaccine manufacturer).
2. Unvax'd children are more likely to get WC than vax'd children (NY Times article
said 1 in 20 for unvax'd kids, vs 1 in 500 for vax'd kids--based on a retrospective study of WC diagnoses in a CO Kaiser plan)
3. Sooo... we're all equally exposed since vaccination status does not prevent transmission, unvax'd children are more likely to get it, so vax your child if you want the partial protection and leave the rest of us alone.