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HOUSEHOLD AND COMMUNITY TRANSMISSION OF THE ASIAN INFLUENZA A (H2N2) AND INFLUENZA B VIRUSES IN 1957 AND 1961

Identifieur interne : 000040 ( PascalFrancis/Curation ); précédent : 000039; suivant : 000041

HOUSEHOLD AND COMMUNITY TRANSMISSION OF THE ASIAN INFLUENZA A (H2N2) AND INFLUENZA B VIRUSES IN 1957 AND 1961

Auteurs : Hiroshi Nishiura [Allemagne, Japon] ; Gerardo Chowell [États-Unis]

Source :

RBID : Pascal:08-0066294

Descripteurs français

English descriptors

Abstract

This study analyzed the distribution of the number of cases in households of various sizes, reconsidering previous survey data from the Asian influenza A (H2N2) pandemic in 1957 and the influenza B epidemic in 1961. The final size distributions for the number of household cases were extracted from four different data sources (n = 547, 671, 92 and 263 households), and a probability model was applied to estimate the community probability of infection (CPI) and household secondary attack rate (SAR). For the 1957 Asian influenza pandemic, the CPI and household SAR were estimated to be 0.42 [95% confidence intervals (Cl): 0.37, 0.47] and 7.06% (95% Cl: 4.73, 9.44), respectively, using data from Tokyo. The figures for the same pandemic using data from Osaka were 0.21 (95% Cl: 0.19, 0.22) and 9.07% (95% Cl: 6.73, 11.53), respectively. Similarly, the CPI and household SAR for two different datasets of influenza B epidemics in Osaka in 1961 were estimated as 0.37 (95% Cl: 0.30, 0.44) and 18.41% (95% Cl:11.37, 25.95) and 0.20 (95% Cl: 0.13, 0.28) and 10.51% (95% Cl: 8.01, 13.15), respectively. Community transmission was more frequent than household transmission, both for the Asian influenza pandemic and the influenza B epidemic, implying that community-based countermeasures (eg, area quarantine and social distancing) may play key roles in influenza interventions.
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A03   1    @0 Southeast asian j. trop. med. public health
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A08 01  1  ENG  @1 HOUSEHOLD AND COMMUNITY TRANSMISSION OF THE ASIAN INFLUENZA A (H2N2) AND INFLUENZA B VIRUSES IN 1957 AND 1961
A11 01  1    @1 NISHIURA (Hiroshi)
A11 02  1    @1 CHOWELL (Gerardo)
A14 01      @1 Department of Medical Biometry, University of Tübingen @2 Tübingen @3 DEU @Z 1 aut.
A14 02      @1 Research Center for Tropical Infectious Diseases, Nagasaki University Institute of Tropical Medicine @2 Nagasaki @3 JPN @Z 1 aut.
A14 03      @1 Center for Nonlinear Studies, Theoretical Division (MS B284), Los Alamos National Laboratory @2 Los Alamos, NM @3 USA @Z 2 aut.
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A64 01  1    @0 Southeast Asian journal of tropical medicine and public health
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C01 01    ENG  @0 This study analyzed the distribution of the number of cases in households of various sizes, reconsidering previous survey data from the Asian influenza A (H2N2) pandemic in 1957 and the influenza B epidemic in 1961. The final size distributions for the number of household cases were extracted from four different data sources (n = 547, 671, 92 and 263 households), and a probability model was applied to estimate the community probability of infection (CPI) and household secondary attack rate (SAR). For the 1957 Asian influenza pandemic, the CPI and household SAR were estimated to be 0.42 [95% confidence intervals (Cl): 0.37, 0.47] and 7.06% (95% Cl: 4.73, 9.44), respectively, using data from Tokyo. The figures for the same pandemic using data from Osaka were 0.21 (95% Cl: 0.19, 0.22) and 9.07% (95% Cl: 6.73, 11.53), respectively. Similarly, the CPI and household SAR for two different datasets of influenza B epidemics in Osaka in 1961 were estimated as 0.37 (95% Cl: 0.30, 0.44) and 18.41% (95% Cl:11.37, 25.95) and 0.20 (95% Cl: 0.13, 0.28) and 10.51% (95% Cl: 8.01, 13.15), respectively. Community transmission was more frequent than household transmission, both for the Asian influenza pandemic and the influenza B epidemic, implying that community-based countermeasures (eg, area quarantine and social distancing) may play key roles in influenza interventions.
C02 01  X    @0 002B01
C02 02  X    @0 002B05C02C
C03 01  X  FRE  @0 Grippe A @5 01
C03 01  X  ENG  @0 Influenza A @5 01
C03 01  X  SPA  @0 Gripe A @5 01
C03 02  X  FRE  @0 Grippe B @5 02
C03 02  X  ENG  @0 Influenza B @5 02
C03 02  X  SPA  @0 Gripe B @5 02
C03 03  X  FRE  @0 Ménage @5 09
C03 03  X  ENG  @0 Household @5 09
C03 03  X  SPA  @0 Familia @5 09
C03 04  X  FRE  @0 Communauté @5 10
C03 04  X  ENG  @0 Community @5 10
C03 04  X  SPA  @0 Comunidad @5 10
C03 05  X  FRE  @0 Transmission @5 11
C03 05  X  ENG  @0 Transmission @5 11
C03 05  X  SPA  @0 Transmisión @5 11
C03 06  X  FRE  @0 Médecine tropicale @5 12
C03 06  X  ENG  @0 Tropical medicine @5 12
C03 06  X  SPA  @0 Medicina tropical @5 12
C07 01  X  FRE  @0 Virose
C07 01  X  ENG  @0 Viral disease
C07 01  X  SPA  @0 Virosis
C07 02  X  FRE  @0 Infection
C07 02  X  ENG  @0 Infection
C07 02  X  SPA  @0 Infección
N21       @1 035
N44 01      @1 OTO
N82       @1 OTO

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Pascal:08-0066294

Le document en format XML

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