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  • Title: Prevalence and predictors of maternal seasonal influenza vaccination in Hong Kong.
    Author: Yuet Sheung Yuen C, Yee Tak Fong D, Lai Yin Lee I, Chu S, Sau-mei Siu E, Tarrant M.
    Journal: Vaccine; 2013 Oct 25; 31(45):5281-8. PubMed ID: 24016814.
    Abstract:
    BACKGROUND: Pregnant women infected with influenza virus are more likely to experience severe complications when compared with their non-pregnant peers. Yet influenza vaccine uptake is low among pregnant women. The purpose of this study was to assess the prevalence of seasonal influenza vaccine uptake among pregnant women in Hong Kong and to identify predictors of vaccine uptake. METHODS: Using a multi-center cross-sectional design, we recruited 2822 new mothers during their immediate postpartum stay from all eight public obstetric hospitals in Hong Kong. We assessed antenatal maternal influenza vaccination status as well as health beliefs and perceptions toward influenza and influenza vaccination. Bivariable and multivariable logistic regression was used to identify the predictors of vaccination uptake. RESULTS: Only 49 (1.7%; 95% CI 1.3-2.3%) participants were vaccinated during their pregnancy. Fear that the vaccine would cause harm to the fetus or themselves were the most common reasons for not being vaccinated. Being aware of the vaccination recommendations (OR=2.69; 95% CI 1.06-6.82), being advised by a health-care provider (OR=6.30; 95% CI 3.19-12.46), history of vaccination (OR=2.47; 95% CI 1.25-4.91), perceived susceptibility to influenza infection (OR=3.67; 95% CI 1.64-8.22), and perceived benefits of influenza vaccination (OR=9.98; 95% CI 3.79-26.24) were all independently associated with vaccination. Perceived barriers to vaccination (OR=0.17; 95% CI 0.07-0.40) were strongly associated with failure to vaccinate. CONCLUSIONS: Low seasonal influenza vaccination uptake among Hong Kong pregnant women was related to a number of factors, all of which are amenable to interventions. Vaccination promotion strategies need to focus on encouraging health-care providers to discuss vaccination with their pregnant clients and in providing pregnant women with accurate and unbiased information about the risks of influenza infection and the benefits of vaccination.
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