Fig. 1.

Cumulative incidence of HZ per 1000 population and proportion of PHN incidence per HZ case, per 1000 population, 2005–2021. A disease episode is defined as an episode of healthcare visits starting with an index event with a herpes zoster diagnosis (ICD 10 code starting with B02) and has a washout period of 365 days. A PHN episode is defined as a disease episode where at least one healthcare visit during the disease episode has a diagnosis of PHN (ICD 10 cod e of B02.2 and/or G53.0). HZ, herpes zoster; ICD-10, International classification of diseases 10th edition; PHN, post-herpetic neuralgia