%0 Journal Article %J JAMA : the journal of the American Medical Association %D 2004 %T Effectiveness over time of varicella vaccine. %A Vázquez, Marietta %A LaRussa, Philip S %A Gershon, Anne A %A Niccolai, Linda M %A Muehlenbein, Catherine E %A Steinberg, Sharon P %A Shapiro, Eugene D %K Adolescent %K Age Factors %K Case-Control Studies %K Chickenpox %K Chickenpox Vaccine %K Child %K Child, Preschool %K DNA, Viral %K Female %K Herpesvirus 3, Human %K Humans %K Immunity, Active %K Immunization Schedule %K Infant %K Male %K Polymerase Chain Reaction %K Time Factors %K Vaccination %N 7 %P 851-5 %R 10.1016/j.amepre.2011.06.032 %V 291 %X Reports of outbreaks of varicella in highly immunized groups have increased concern about the effectiveness of varicella vaccine. %8 2004 Feb 18