According to the AANP Smart Brief's postings today, it looks like they may begin to reassess the need for two varicella vaccines vs. one as it had been recommended in the past....see below:

 

Data cast doubt on chickenpox vaccine recommendation
Data from a chickenpox outbreak at an Arkansas elementary school showed vaccinated children still came down with a mild case of the illness, even if they had two inoculations. The CDC study found vaccine efficacy was 85.4% for one dose and 89.1% for two doses, not significantly different. Researchers suggested the two-dose recommendation for children, which began in 2006, may need to be reassessed. Medscape (free registration)/Reuters(8/12)