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Incidence rate of HZ by age, 1994 to 2018. Note: From 1994 to 2000, the 61- to 70-year-old age group included individuals over 70 years old. In OLDW, age is capped at 89 years old to maintain patient privacy. Individuals ages 71 and older from 1994 to 2000 cannot be differentiated from those younger than 70 because birth years earlier than 1930 were assigned the year 1930. Abbreviations: HZ, herpes zoster; OLDW, OptumLabs Data Warehouse.
