Table 1.
Characteristics of Study Population and Sites, Peru Influenza Cohort Study, 2009–2015a
| Characteristic | Study Site | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lima | Cuzco | Tumbes | Puerto Maldonado | Total | ||||||
| No. of Participantsb | 3296 | 3565 | 2685 | 4504 | 14050 | |||||
| Sex, female | 1699 | (52) | 1830 | (51) | 1379 | (51) | 2395 | (53) | 7303 | (52) |
| Age group, y | ||||||||||
| <2 | 300 | (9) | 351 | (10) | 290 | (11) | 418 | (9) | 1359 | (10) |
| 2–4 | 220 | (7) | 232 | (6) | 170 | (6) | 376 | (8) | 998 | (7) |
| 5–11 | 401 | (12) | 447 | (13) | 327 | (12) | 713 | (16) | 1888 | (13) |
| 12–17 | 424 | (13) | 466 | (13) | 290 | (11) | 577 | (13) | 1757 | (13) |
| 18–49 | 1573 | (48) | 1637 | (46) | 1179 | (44) | 1930 | (43) | 6319 | (45) |
| 50–64 | 302 | (9) | 289 | (8) | 248 | (10) | 362 | (8) | 1201 | (9) |
| ≥65 | 76 | (2) | 143 | (4) | 181 | (7) | 128 | (3) | 528 | (4) |
| Age range, y | 0–115 | 0–106 | 0–98 | 0–92 | ||||||
| Geographic characteristic | ||||||||||
| Description of ecosystem | Coast desert | Andes mountain highlands | Dry tropical forest | Amazon rainforest | ||||||
| Study site | Pampas de San Juan de Miraflores | San Jeronimo | San Jacinto | Tambopata | ||||||
| Population | 57238 | 31687 | 7979 | 60214 | ||||||
| Latitude | 76°58′12.15″ | 71°53′00″ | 80º27′04″ | 77º32′ | ||||||
| Longitude | 12°9′5.2″ | 13°32′24″ | 03°38′35″ |
12°36′ | ||||||
| Altitude, m | 141 | 3244 | 36 | 139 | ||||||
| Average rainfall/y, mm | 15 | 800 | 250 | >1000 | ||||||
| Average temperature, C° (min–max) | 19 (17–23) | 13 (7–19) | 25 (17–36) | 28 (20–34) | ||||||
| Average relative humidity, % (min–max) | 82 (63–94) | 55 (31–82) | 80 (52–92) | 78 (55–99) | ||||||
Data are presented as No. (%) unless otherwise indicated.
aJune 2009 through July 2015 for Lima, Cuzco, and Puerto Maldonado and June 2009 through July 2014 for Tumbes.
bStudy population at enrollment.