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Volume 20, Number 11—November 2014
Research

Death Patterns during the 1918 Influenza Pandemic in Chile

Gerardo ChowellComments to Author , Lone Simonsen, Jose Flores, Mark A. Miller, and Cécile Viboud
Author affiliations: Arizona State University, Tempe, Arizona, USA (G. Chowell); National Institutes of Health, Bethesda, Maryland, USA (G. Chowell, M.A. Miller, C. Viboud); George Washington University, Washington, DC, USA (L. Simonsen); University of South Dakota, Vermillion, South Dakota, USA (J. Flores); Universidad de Chile, Santiago, Chile (J. Flores)

Main Article

Table 1

Estimates of absolute excess mortality rates attributable to pandemic influenza across 24 provinces of Chile, 1918–1921*

Province† Pandemic period, no. excess deaths/10,000 population
 Cumulative absolute excess mortality rate
Jul 1918–Mar 1919 Jun 1919–Mar 1920 Nov 1920–Mar 1921 Jun 1921–Dec 1921
Tacna 8.8 64.8 0.0 0.0 73.6
Tarapacá 14.3 0.0 10.5 0.0 24.8
Antofagasta 0.0 0.0 0.0 0.0 0.0
Atacama 27.0 27.5 0.0 42.3 96.8
Coquimbo 0.0 59.2 0.0 38.3 97.5
Aconcagua 0.0 44.6 0.0 0.0 44.6
Valparaiso 20.6 36.5 0.0 0.0 57.1
Santiago 48.0 57.9 0.0 99.7 205.6
O’ Higgins 15.1 37.4 8.0 0.0 60.5
Colchagua 12.7 57.6 0.0 0.0 70.3
Curicó 9.7 44.5 0.0 0.0 54.2
Talca 0.0 53.0 0.0 0.0 53
Maule 0.0 56.8 0.0 0.0 56.8
Linares‡ 0.0 25.6 0.0 0.0 25.6
Niuble 7.2 70.0 0.0 0.0 77.2
Concepción 0.0 57.0 0.0 0.0 57
Arauco 0.0 41.0 8.5 0.0 49.5
Bio-Bio 0.0 125.2 0.0 0.0 125.2
Malleco 0.0 76.6 0.0 0.0 76.6
Cautin 6.4 52.6 0.0 0.0 59
Valdivia 0.0 56.7 11.2 30.0 97.9
Llanquihue 7.6 80.2 0.0 36.3 124.1
Chiloé 0.0 84.1 0.0 62.3 146.4
Magallanes 21.8 18.9 0.0 46.0 86.7
Total Chile 13.6 54.4 1.4 24.5 93.9

*Excess mortality estimates were based on a seasonal regression model applied to monthly deaths.
†Provinces are sorted in geographic order from northern to southern Chile.
‡Model baseline to estimate excess deaths excluded the high-death months of Sep 1917–Mar 1918.

Main Article

Page created: October 17, 2014
Page updated: October 17, 2014
Page reviewed: October 17, 2014
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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