Volume 9, Number 7—July 2003
Research
Hantavirus Prevalence in the IX Region of Chile
Marlis Täger Frey*†
, Pablo C. Vial*‡, Constanza H. Castillo§, Paula M. Godoy*, Brian Hjelle¶, and Marcela G. Ferrés*
, Pablo C. Vial*‡, Constanza H. Castillo§, Paula M. Godoy*, Brian Hjelle¶, and Marcela G. Ferrés*
Table 1
Relationship between independent variables and seropositivity to hantaviruses, IX Region, Chile
| Variables | Seropositive (total) | p value | RR (95% CI)a |
|---|---|---|---|
| Sex |
|||
| Male |
4 (395) |
0.43 |
|
| Female |
2 (435) |
||
| Age |
|||
| 15–44 y of age |
2 (550) |
0.18 |
|
| >44 y of age |
4 (280) |
||
| Race |
|||
| Mapuche |
2 (151) |
0.30 |
|
| Other |
4 (679) |
||
| Area |
|||
| Andean |
6 (271) |
0.0001a |
NAb |
| Central |
0 (273) |
||
| Coastal |
0 (286) |
||
| Risk activity or labor |
|||
| Agrarianc |
|||
| No activity |
1 (271) |
||
| Two or more |
4 (341) |
0.38 |
|
| Forestingd |
|||
| No activity |
1 (279) |
||
| With activity |
5 (135) |
0.018 |
9.72 (1.15 to 82.44) |
| Exposure to rodents |
|||
| Peridomestic |
5 (731) |
0.10 |
|
| Laboral | 5 (453) | 1.00 |
ap <0.05; p values were determined by using 2-tailed Fisher exact test; RR, relative risk; CI, confidence interval.
bNot applicable.
cClearing, shrubbery cutting, working in pastures or cellars.
dForesting, working at a sawmill.
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