Influenza-associated morbidity in subtropical Taiwan.

  • ChungMin L
  • SzuYuan C
  • SzuChieh C
  • et al.
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Abstract

Objectives: The purpose of this study was to assess the characteristics of influenza-associated morbidity in subtropical Taiwan, corresponding to the seasonal patterns, weather, and co-circulation of influenza (sub)types, and other respiratory viruses, where the burden of influenza is poorly quantified. Methods: This study applied the virus variation-guided Poisson seasonal regression models to evaluate the impact of epidemic influenza on morbidity in Taiwan for 1999-2006. The models allow for the adjusting of influenza-associated morbidity for factors such as annual trend, seasonality, temperature, relative humidity, influenza A (H1N1), A (H3N2), B, and respiratory syncytial virus. Results: Influenza-associated morbidity was associated more strongly with temperature than relative humidity. Influenza A (H3N2) was more coordinated with other virus (sub)types than A (H1N1). Type B dominated simultaneously with A (H3N2) at times, whereas A (H3N2) and A (H1N1) rarely dominated simultaneously with each other. Epidemiologically, A (H3N2) appeared to be the dominant subtype (51%), followed by type B (39%) and then A (H1N1) (10%) for influenza-associated morbidity. Conclusions: This study suggests that seasonality and influenza (sub)types contribute significantly to influenza morbidity in subtropical Taiwan. This is important for influenza control managers who are involved actively in using epidemic and climate information to achieve influenza-reduction targets in subtropical regions.

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ChungMin, L., SzuYuan, C., SzuChieh, C., & ChiaPin, C. (2009). Influenza-associated morbidity in subtropical Taiwan. International Journal of Infectious Diseases. Oxford. Retrieved from http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B7CPT-4V75HPX-2&_user=10&_coverDate=09%2F30%2F2009&_rdoc=13&_fmt=high&_orig=browse&_srch=doc-info(%23toc%2317975%232009%23999869994%231459089%23FLA%23display%23Volume)&_cdi=17975&_sort=d&_docanchor=

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