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Volume 9, Number 7—July 2003


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

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Table 3

Incidence of hantavirus cardiopulmonary syndrome (HCPS) and seroprevalence in Chile’s IX Region according to race

Race Seroprevalence
HCPS cases/population
RR (95% CI)a
Positive/total (%) RR (95% CI)a (rate x 100.000)
2/151 (1.3)
2.23 (0.41 to 12.06)
4/205,466 (1.9)
0.37 (0.13 to 1.06)
Other 4/678 (0.6) 30/575,776 (5.2)

aRelative risk (95% confidence interval). p values were determined by using two-tailed Fisher exact test; RR, relative risk; CI, confidence interval.

Main Article