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Volume 9, Number 7—July 2003

Research

Hantavirus Prevalence in the IX Region of Chile

Marlis Täger Frey*†Comments to Author , Pablo C. Vial*‡, Constanza H. Castillo§, Paula M. Godoy*, Brian Hjelle¶, and Marcela G. Ferrés*
Author affiliations: *Universidad Católica de Chile, Santiago, Chile; †Universidad Austral de Chile, Valdivia, Chile; ‡Universidad del Desarrollo, Santiago, Chile; §Universidad de La Frontera, Temuco, Chile; ¶University of New Mexico School of Medicine, Albuquerque, New Mexico, USA

Main Article

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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