Volume 18, Number 1—January 2012
Research
The 1918–19 Influenza Pandemic in Boyacá, Colombia
Gerardo Chowell
, Cécile Viboud, Lone Simonsen, Mark A. Miller, Rodolfo Acuna-Soto, Juan M. Ospina Díaz, and Abel Fernando Martínez-Martín
, Cécile Viboud, Lone Simonsen, Mark A. Miller, Rodolfo Acuna-Soto, Juan M. Ospina Díaz, and Abel Fernando Martínez-MartínTable 2
Main epidemiologic features of the 1918–1920 influenza pandemic*
| Location | Herald wave in 1918 | Excess mortality rate from respiratory illness/10,000 population, main 1918–19 wave (mo of peak pandemic deaths, 1918) | Death-sparing effect among elderly persons | Reference |
|---|---|---|---|---|
| Americas | ||||
| New York, USA | Yes (Mar–Apr) | 52 (Oct–Nov) | Yes | (1) |
| Mexico City, Mexico | Yes (May) | 47 (Nov) | No | (3) |
| Toluca, Mexico | Yes (May) | 162 (Nov) | No | (3) |
| Boyacá, Colombia | No | 40 (Nov) | No | This study |
| Lima, Peru | Yes (Sep–Oct)† | 29 (Nov) | No† | (4) |
| Iquitos, Peru | No | 288 (Nov) | ND | (4) |
| Europe | ||||
| Copenhagen, Denmark | Yes (Jul–Aug) | 39 (Nov) | Yes | (6) |
| Paris, France | No | 61 (Oct) | ND | (7) |
| Basque Provinces, Spain | Yes (Jun) | 121 (Oct) | ND | (19) |
| Madrid, Spain | Yes (Jun) | 53 (Oct) | Yes | (7) |
| Asia | ||||
| Taiwan | No | 67 (Nov) | No | (8,20) |
| Singapore | Yes (Jul) | 78–180 (Oct) | ND | (9,20) |
*Data from quantitative studies across different locations around the world. Locations are organized by continent (America, Europe, Asia) and latitude. ND, not determined.
†Cannot conclude because of lack of age-specific population data.
