TABLE 2

Crude HZ Incidence Rates per 100 000 Person Years for Each Year After the First Dose of Varicella Vaccine at 12–18 Months of Age and Before Administration of a Second Dose

Vaccination yaTime Since Vaccination, y
<11–<22–<33–<44–<55–<6
2003371713974
20044429181030
200557361711713
20067328147814
2007662569918
200879249650
2009562110800
201032141010
2011461582
201244102
2013289
201424
All yb502111756
  • Excludes children vaccinated before 2003, children vaccinated at 11 months of age, and those classified as immunosuppressed during the study period. —, not applicable.

  • a Each row of the table reveals annual HZ incidence rates over the subsequent 6-year period for the cohort of children vaccinated in that calendar year; follow-up for calendar years 2010–2014 is truncated at December 31, 2014, study end date.

  • b Annual HZ incidence rates over the 6-year period after varicella vaccination for all study years combined (2003–2014; P < .0001).