Re: chicken pox vaccine effectiveness
Here is the CDC's information on the varicella vaccine.
While there is certainly differing opinions here on DS regarding vaccination and how effective or long lasting they are, I recommend starting with the CDC and from there looking at the studies that they publish rather than individuals' "beliefs" on how well they work or how long they last.
Very few routine vaccines have boosters (they have a specific course whether it is 1 or 3 or more shots over a period of time). Immunity is increased in the population or built up over time with the specific course of the vaccination. Once the course of the immunization is complete, few have any additional recommended boosters due to the potential for waning immunity.
Last edited by z2akids; 10-03-2012 at 10:33 PM.