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Impact of medical and behavioural factors on influenza-like illness, healthcare-seeking, and antiviral treatment during the 2009 H1N1 pandemic: USA, 2009–2010

  • M. BIGGERSTAFF (a1), M. A. JHUNG (a1), C. REED (a1), S. GARG (a1) (a2), L. BALLUZ (a3), A. M. FRY (a1) and L. FINELLI (a1)...
Summary
SUMMARY

We analysed a cross-sectional telephone survey of U.S. adults to assess the impact of selected characteristics on healthcare-seeking behaviours and treatment practices of people with influenza-like illness (ILI) from September 2009 to March 2010. Of 216 431 respondents, 8·1% reported ILI. After adjusting for selected characteristics, respondents aged 18–64 years with the following factors were more likely to report ILI: a diagnosis of asthma [adjusted odds ratio (aOR) 1·88, 95% CI 1·67–2·13] or heart disease (aOR 1·41, 95% CI 1·17–1·70), being disabled (aOR 1·75, 95% CI 1·57–1·96), and reporting financial barriers to healthcare access (aOR 1·63, 95% CI 1·45–1·82). Similar associations were seen in respondents aged ⩾65 years. Forty percent of respondents with ILI sought healthcare, and 14% who sought healthcare reported receiving influenza antiviral treatment. Treatment was not more frequent in patients with high-risk conditions, except those aged 18–64 years with heart disease (aOR 1·90, 95% CI 1·03–3·51). Of patients at high risk for influenza complications, self-reported ILI was greater but receipt of antiviral treatment was not, despite guidelines recommending their use in this population.

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Corresponding author
* Author for correspondence: M. Biggerstaff, MPH, Centers for Disease Control and Prevention, 1600 Clifton Road NE MS A-32, Atlanta, GA 30333, USA. (Email: MBiggerstaff@cdc.gov)
References
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35. C Schoen , Insured but not protected: how many adults are underinsured? Health Affairs (Millwood) 2005; Suppl. Web Exclusives: W5-289-W285-302.

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Epidemiology & Infection
  • ISSN: 0950-2688
  • EISSN: 1469-4409
  • URL: /core/journals/epidemiology-and-infection
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