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Herpes zoster in Australia: Evidence of increase in incidence in adults attributable to varicella immunization?

journal contribution
posted on 2022-10-24, 04:58 authored by A Jardine, S J Conaty, Hassan VallyHassan Vally
Rates of herpes zoster (HZ) hospitalizations, antiviral prescriptions, and New South Wales emergency-department presentations for age groups <20, 20-39, 40-59 and ≥60 years were investigated. Trends were analysed using Poisson regression to determine if rates increased following funding of varicella immunization in Australia in November 2005. The regression analysis revealed significantly increasing trends of between 2% and 6% per year in both antiviral prescriptions and emergency-department presentations in all except the <20 years age group. When considered together, the differential changes in rates observed by age group provides preliminary evidence to indicate that HZ incidence is increasing in adults aged >20 years. However, it is not possible to attribute the increasing trends in HZ observed directly to the varicella immunization programme, and continued monitoring and analyses of data for a longer duration, both pre- and post-vaccine introduction, is required. © Copyright Cambridge University Press 2010.

History

Journal

Epidemiology and Infection

Volume

139

Pagination

658 - 665

ISSN

0950-2688

eISSN

1469-4409