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Volume 18, Number 1—January 2012


The 1918–19 Influenza Pandemic in Boyacá, Colombia

Gerardo ChowellComments to Author , Cécile Viboud, Lone Simonsen, Mark A. Miller, Rodolfo Acuna-Soto, Juan M. Ospina Díaz, and Abel Fernando Martínez-Martín
Author affiliations: Arizona State University, Tempe, Arizona, USA (G. Chowell); National Institutes of Health, Bethesda, Maryland, USA (G. Chowell, C. Viboud, M.A. Miller); George Washington University, Washington, DC, USA (L. Simonsen); Universidad Nacional Autónoma de México, Delegación Coyoacán, Mexico (R. Acuna-Soto); Universidad Pedagógica y Tecnológica de Colombia, Boyacá, Colombia (J.M. Ospina Díaz, A.F. Martínez-Martín)

Main Article

Table 4

Estimates of the reproduction number across influenza pandemic locations in the Americas , 1918–19*

Location, north to south Time of pandemic wave R estimate
3-d serial interval 6-d serial interval
45 US cities† 1918 autumn† 1.7–1.8 2.5–3.3 (2,22)
Toluca 1918 spring 1.6–1.8 2.4–3.1 (3)
Toluca 1918 autumn 2.0–2.5 3.2–6.1 (3)
Mexico City 1918 spring 1.3–1.3 1.7–1.8 (3)
Mexico City 1918 autumn 1.3–1.3 1.6–1.7 (3)
Boyacá, Colombia 1918 Oct–Nov 1.4–1.5 1.8–2.3 This study
Lima, Peru 1918 Nov–1919 Feb 1.3–1.4 1.6–2.0 (4)

*Values are based on a range of estimates provided by considering different distributions of the generation interval (exponentially distributed latent and infectious periods or fixed generation interval). R, reproduction number.
†R estimates are based on the mean of the initial growth rates across 45 US cities.

Main Article