http://articles.mercola.com/sites/articles/archive/2002/01/16/chickenpox-children.aspxContrary to widely held beliefs, most 10-year-old children with negative or unknown varicella (chickenpox) histories are actually immune to chickenpox. Investigators from Laval University in Quebec assessed the age-specific incidence of chickenpox inenCommunityServer 2008.5 SP1 (Build: 31106.3070)