Influenza vaccine coverage rates and perceptions on vaccination in South Korea

Kee, Sae Yoon; Lee, Jin Soo; Cheong, Hee Jin; Chun, Byung Chul; Song, Joon Young; Choi, Won Suk; Jo, Yu Mi; Seo, Yoo Bin; Kim, Woo Joo

doi:10.1016/j.jinf.2007.04.354

Cited by 107 publications

(124 citation statements)

References 26 publications

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“…In the Republic of Korea (ROK), the influenza vaccine coverage rate was an estimated 80% in elderly individuals, and pneumococcal vaccination with the 23-valent pneumococcal polysaccharide vaccine (PPV23) was adopted as the national immunization program for elderly individuals (Ն65 years of age) in May 2013 (8,9). This study evaluated the effectiveness of influenza and pneumococcal vaccination alone or in combination to prevent pneumonia and hospitalization following influenza-like illness (ILI).…”

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confidence: 99%

Prospective Cohort Study on the Effectiveness of Influenza and Pneumococcal Vaccines in Preventing Pneumonia Development and Hospitalization

Song

Lee

Wie

et al. 2014

Clin. Vaccine Immunol.

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j Pneumonia and acute exacerbation of chronic illness are leading causes of influenza-related hospitalization. Therefore, influenza and pneumococcal vaccinations are strongly recommended for adults with comorbidities. Using a hospital-based influenza surveillance system, we performed a multicenter, prospective cohort study of patients visiting emergency rooms with influenza-like illness (ILI) during the influenza epidemic period in 2013 to 2014. Patients aged >19 years were enrolled, and clinical data were collected. Multivariate analyses were performed to estimate the effectiveness of influenza and pneumococcal vaccination in preventing pneumonia development and hospitalization. During study periods, 2,262 patients with ILI were registered. Among 2,217 patients with available vaccination records, 31.9% (707 patients) and 9.7% (216 patients) had received influenza and pneumococcal vaccines, respectively. Among patients who had been administered a pneumococcal vaccine, 94.4% had received the 23-valent polysaccharide vaccine (PPV23). The adjusted rates of effectiveness of the influenza vaccine for preventing pneumonia development and hospitalization were 64.0% (95% confidence interval [CI] ‫؍‬ 29% to 81%) and 35.0% (95% CI ‫؍‬ 12% to 52%), respectively. Pneumococcal vaccination did not reduce pneumonia development or hospitalization. In conclusion, influenza rather than PPV23 vaccination may reduce pneumonia development and hospitalization in patients with preceding ILI.

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confidence: 99%

Prospective Cohort Study on the Effectiveness of Influenza and Pneumococcal Vaccines in Preventing Pneumonia Development and Hospitalization

Song

Lee

Wie

et al. 2014

Clin. Vaccine Immunol.

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“…Only 33 (18.9%) of the subjects in this study were influenza vaccine na€ ıve, as the influenza vaccine coverage rates in South Korea had been quite high (84.8%) in the risk group. 25 In conclusion, influenza vaccines in this study provided an adequate 1-year immunity to influenza H1N1 and H3N2 without differences between split and subunit vaccines in children and adolescents. The immunogenicity at one month after vaccination influenced further serological influenza infections.…”

Section: Discussionmentioning

confidence: 56%

Hemagglutination inhibiting antibody persistence 1 year after influenza vaccination in Korean children and adolescents

Kang

Eun

Kim

et al. 2017

Human Vaccines & Immunotherapeutics

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This study aimed to assess the 1-y immunogenicity of influenza vaccines and the association between immunogenicity at 1 m and further influenza infections in children aged 6 m to 18 y. Serum hemagglutination inhibition (HI) antibody titers and GMTs were determined for the recommended influenza strains 0, 1, 6, and 12 m post-vaccination. The serological evidence of influenza infections were defined as the increase of HI titer (HI 1:40 and 4-fold rise). The seroprotection rates for strains A(H1N1), A (H3N2), and B were 91.2%, 87.6%, and 87.6%, respectively, at 1 month (n = 174). These rates were 76.5%, 64.7%, and 54.6%, respectively, at 12 m. The seroprotection rates and GMTs for influenza A(H1N1) and A (H3N2) were higher at 12 m than at 0 m (p < 0.05) but not for B. There were 39 subjects (42 cases) of serological influenza infections. Subjects with seroprotection at 1 m post-vaccination had showed fewer serologic A(H1N1) (10.1 vs 54.5%) and A(H3N2) (7.2 vs 38.1%) infections than the ones with HI titer <1:40 during follow-up (P < 0.01). In conclusion, influenza vaccines used during the 2008-09 season induced adequate 1-y immunogenicity for A(H1N1) and A(H3N2). The immunogenicity at one month after vaccination influenced further serological influenza infections.

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“…17 Several authors found that a high proportion of non-vaccinated high-risk persons thought they did not qualify for the vaccination and reported having good health. 18,19 Age-based strategies have a series of advantages and disadvantages. The advantages of the age-based strategy include the possible reduction in health care expenditure and in the annual work-related economic burden of influenza morbidity.…”

Section: Discussionmentioning

confidence: 99%

Are age-based strategies effective in increasing influenza vaccination coverage?: The Spanish experience

Jiménez‐García

Herńndez-Barrera

Rodríguez-Rieiro

et al. 2012

Human Vaccines & Immunotherapeutics

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Influenza vaccine coverage rates and perceptions on vaccination in South Korea

Abstract: Doctor's recommendation was the most important factor in encouraging people to be vaccinated against influenza. Doctors should be geared up with precise information and actively encourage high risk population in order to increase vaccination coverage.

Cited by 107 publications

References 26 publications

Prospective Cohort Study on the Effectiveness of Influenza and Pneumococcal Vaccines in Preventing Pneumonia Development and Hospitalization

Prospective Cohort Study on the Effectiveness of Influenza and Pneumococcal Vaccines in Preventing Pneumonia Development and Hospitalization

Hemagglutination inhibiting antibody persistence 1 year after influenza vaccination in Korean children and adolescents

Are age-based strategies effective in increasing influenza vaccination coverage?: The Spanish experience

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