Healthcare costs associated with varicella and herpes zoster in Norway.

BACKGROUND

Norway does not implement routine vaccination against varicella or herpes zoster. Despite substantial health burden associated with both diseases, their economic impact is not well described. The aim of the present study was to document the healthcare costs associated with both conditions in a Norwegian setting.

METHODS

We used registry data about patients' contacts with primary and specialized healthcare services from 2008 to 2014 to estimate the costs associated with varicella and herpes zoster in the primary and hospital care sector. We calculated the individual costs by treatment facility (general practitioner and emergency primary care clinic) in primary care and by treatment level (inpatient, outpatient or ambulatory treatment) at hospitals.

RESULTS

We estimate that the annual healthcare cost of patients with varicella and herpes zoster are NOK 85 million (approximately € 9 million). Of the annual costs, 73% are associated with herpes zoster and 27% are due to varicella. The majority (54%) of the total annual cost is represented by patients with herpes zoster treated in hospital.

CONCLUSION

Varicella and herpes zoster impose a substantial financial burden on the national healthcare services in Norway. Most of the costs are incurred by herpes zoster, which could be prevented by vaccination.