The 1918–19 Influenza Pandemic in Boyacá, Colombia

Gerardo Chowell*, Cecile Viboud, Lone Simonsen, Mark Miller, R Acuna-Soto, J.M. Díaz, A.F. Martínez-Martin

*Corresponding author

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstract

To quantify age-specific excess-mortality rates and transmissibility patterns for the 1918-20 influenza pandemic in Boyacá, Colombia, we reviewed archival mortality records. We identified a severe pandemic wave during October 1918-January1919 associated with 40 excess deaths per 10,000 population. The age profile for excess deaths was W shaped; highest mortality rates were among infants (<5 y of age), followed by elderly persons (>60 y) and young adults (25-29 y). Mean reproduction number was estimated at 1.4-1.7, assuming 3- or 4-day generation intervals. Boyacá, unlike cities in Europe, the United States, or Mexico, experienced neither a herald pandemic wave of deaths early in 1918 nor a recrudescent wave in 1920. In agreement with reports from Mexico, our study found no death-sparing effect for elderly persons in Colombia. We found regional disparities in prior immunity and timing of introduction of the 1918 pandemic virus across populations.
OriginalsprogEngelsk
TidsskriftEmerging Infectious Diseases
Vol/bind18
Udgave nummer1
Sider (fra-til)48-56
ISSN1080-6040
DOI
StatusUdgivet - jan. 2012
Udgivet eksterntJa

Citer dette

Chowell, G., Viboud, C., Simonsen, L., Miller, M., Acuna-Soto, R., Díaz, J. M., & Martínez-Martin, A. F. (2012). The 1918–19 Influenza Pandemic in Boyacá, Colombia. Emerging Infectious Diseases , 18(1), 48-56. https://doi.org/10.3201/eid1801.101969