Dataset Information

Longitudinal surveillance of influenza in Japan, 2006-2016.

ABSTRACT: We analysed 2006-2016 national influenza surveillance data in Japan with regards to age-, sex-, and predominant virus-related epidemic patterns and the prevalence of serum influenza virus antibodies. We found a significant increase in influenza prevalence in both children (≤ 19 years old) and adults (≥ 20 years old) over time. The influenza prevalence was higher in children (0.33 [95% CI 0.26-0.40]) than in adults (0.09 [95% CI 0.07-0.11]). Additionally, the mean prevalence of antibodies for A(H1N1)pdm09 and A(H3N2) was significantly higher in children than in adults, whereas the mean prevalence of antibodies for B lineages was relatively low in both children and adults. There was a biennial cycle of the epidemic peak in children, which was associated with a relatively higher prevalence of B lineages. The female-to-male ratios of the influenza prevalence were significantly different in children (≤ 19 years old; 1.10 [95% CI:1.08-1.13]), adults (20-59 years old; 0.79 [95% CI 0.75-0.82]), and older adults (≥ 60 years old; 1.01 [95% CI 0.97-1.04]). The significant increase in influenza prevalence throughout the study period suggests a change of immunity to influenza infection. Long-term surveillance is important for developing a strategy to monitor, prevent and control for influenza epidemics.

SUBMITTER: Inaida S

PROVIDER: S-EPMC9281223 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature

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Longitudinal surveillance of influenza in Japan, 2006-2016.

Inaida Shinako S Matsuno Shigeo S Okumura Jiro J

Scientific reports 20220714 1

We analysed 2006-2016 national influenza surveillance data in Japan with regards to age-, sex-, and predominant virus-related epidemic patterns and the prevalence of serum influenza virus antibodies. We found a significant increase in influenza prevalence in both children (≤ 19 years old) and adults (≥ 20 years old) over time. The influenza prevalence was higher in children (0.33 [95% CI 0.26-0.40]) than in adults (0.09 [95% CI 0.07-0.11]). Additionally, the mean prevalence of antibodies for A(H ...[more]

PMID: 35835833

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Longitudinal surveillance of influenza in Japan, 2006-2016.

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Longitudinal surveillance of influenza in Japan, 2006-2016.

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