The Impact of Influenza Epidemics on Hospitalizations

Lone Simonsen, Keiji Fukuda, Lawrence B. Schonberger, Nancy J. Cox

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

The traditional method for assessing the severity of influenza seasons is to estimate the associated increase (i.e., excess) in pneumonia and influenza (P&I) mortality. In this study, excess P&I hospitalizations were estimated from National Hospital Discharge Survey Data from 26 influenza seasons (1970-1995). The average seasonal rate of excess P&I hospitalization was 49 (range, 8-102)/100,000 persons, but average rates were twice as high during A(H3N2) influenza seasons as during A(H1N1)/B seasons. Persons aged <65 years had 57% of all influenza-related hospitalizations; however, the average seasonal risk for influenza-related P&I hospitalizations was much higher in the elderly than in persons aged <65 years. The 26 pairs of excess P&I hospitalization and mortality rates were linearly correlated. During the A(H3N2) influenza seasons after the 1968 pandemic, excess P&I hospitalizations declined among persons aged <65 years but not among the elderly. This suggests that influenza-related hospitalizations will increase disproportionately among younger persons in future pandemics.
OriginalsprogEngelsk
TidsskriftJournal of Infectious Diseases
Vol/bind181
Udgave nummer3
Antal sider7
ISSN0022-1899
StatusUdgivet - 2000
Udgivet eksterntJa

Citer dette

Simonsen, L., Fukuda, K., Schonberger, L. B., & Cox, N. J. (2000). The Impact of Influenza Epidemics on Hospitalizations. Journal of Infectious Diseases, 181(3).
Simonsen, Lone ; Fukuda, Keiji ; Schonberger, Lawrence B. ; Cox, Nancy J. / The Impact of Influenza Epidemics on Hospitalizations. I: Journal of Infectious Diseases. 2000 ; Bind 181, Nr. 3.
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abstract = "The traditional method for assessing the severity of influenza seasons is to estimate the associated increase (i.e., excess) in pneumonia and influenza (P&I) mortality. In this study, excess P&I hospitalizations were estimated from National Hospital Discharge Survey Data from 26 influenza seasons (1970-1995). The average seasonal rate of excess P&I hospitalization was 49 (range, 8-102)/100,000 persons, but average rates were twice as high during A(H3N2) influenza seasons as during A(H1N1)/B seasons. Persons aged <65 years had 57{\%} of all influenza-related hospitalizations; however, the average seasonal risk for influenza-related P&I hospitalizations was much higher in the elderly than in persons aged <65 years. The 26 pairs of excess P&I hospitalization and mortality rates were linearly correlated. During the A(H3N2) influenza seasons after the 1968 pandemic, excess P&I hospitalizations declined among persons aged <65 years but not among the elderly. This suggests that influenza-related hospitalizations will increase disproportionately among younger persons in future pandemics.",
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Simonsen, L, Fukuda, K, Schonberger, LB & Cox, NJ 2000, 'The Impact of Influenza Epidemics on Hospitalizations', Journal of Infectious Diseases, bind 181, nr. 3.

The Impact of Influenza Epidemics on Hospitalizations. / Simonsen, Lone; Fukuda, Keiji; Schonberger, Lawrence B.; Cox, Nancy J.

I: Journal of Infectious Diseases, Bind 181, Nr. 3, 2000.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - The Impact of Influenza Epidemics on Hospitalizations

AU - Simonsen, Lone

AU - Fukuda, Keiji

AU - Schonberger, Lawrence B.

AU - Cox, Nancy J.

PY - 2000

Y1 - 2000

N2 - The traditional method for assessing the severity of influenza seasons is to estimate the associated increase (i.e., excess) in pneumonia and influenza (P&I) mortality. In this study, excess P&I hospitalizations were estimated from National Hospital Discharge Survey Data from 26 influenza seasons (1970-1995). The average seasonal rate of excess P&I hospitalization was 49 (range, 8-102)/100,000 persons, but average rates were twice as high during A(H3N2) influenza seasons as during A(H1N1)/B seasons. Persons aged <65 years had 57% of all influenza-related hospitalizations; however, the average seasonal risk for influenza-related P&I hospitalizations was much higher in the elderly than in persons aged <65 years. The 26 pairs of excess P&I hospitalization and mortality rates were linearly correlated. During the A(H3N2) influenza seasons after the 1968 pandemic, excess P&I hospitalizations declined among persons aged <65 years but not among the elderly. This suggests that influenza-related hospitalizations will increase disproportionately among younger persons in future pandemics.

AB - The traditional method for assessing the severity of influenza seasons is to estimate the associated increase (i.e., excess) in pneumonia and influenza (P&I) mortality. In this study, excess P&I hospitalizations were estimated from National Hospital Discharge Survey Data from 26 influenza seasons (1970-1995). The average seasonal rate of excess P&I hospitalization was 49 (range, 8-102)/100,000 persons, but average rates were twice as high during A(H3N2) influenza seasons as during A(H1N1)/B seasons. Persons aged <65 years had 57% of all influenza-related hospitalizations; however, the average seasonal risk for influenza-related P&I hospitalizations was much higher in the elderly than in persons aged <65 years. The 26 pairs of excess P&I hospitalization and mortality rates were linearly correlated. During the A(H3N2) influenza seasons after the 1968 pandemic, excess P&I hospitalizations declined among persons aged <65 years but not among the elderly. This suggests that influenza-related hospitalizations will increase disproportionately among younger persons in future pandemics.

M3 - Journal article

VL - 181

JO - Journal of Infectious Diseases

JF - Journal of Infectious Diseases

SN - 0022-1899

IS - 3

ER -