Population immunity to varicella in Canada: A Canadian Immunization Research Network (CIRN) study.

ABSTRACT:

Introduction

The incidence of varicella in Canada has decreased by almost 99% since vaccination was introduced. However, variation in the timing and eligibility of vaccination programs across the country has resulted in some cohorts being under-vaccinated and therefore potentially susceptible to infection.

Methods

We used nationally representative specimens from the Biobank of Statistics Canada's Canadian Health Measures Survey (CHMS) as well as residual specimens from Ontario collected between 2009-2014 to estimate population immunity across age-groups and geography, and identify any groups at increased risk of varicella infection.

Results

The weighted proportion of specimens with antibody levels above the threshold of protection was 93.6% (95% CI: 92.4, 95.0). Prote

SUBMITTER: Wright J 

PROVIDER: S-EPMC11332944 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature