. 2003 Jul;9(7):827–832. doi: 10.3201/eid0907.020587

Table 3. Incidence of hantavirus cardiopulmonary syndrome (HCPS) and seroprevalence in Chile’s IX Region according to race.

Race	Seroprevalence	Incidence	HCPS cases/population	RR (95% CI)^a
Race	Positive/total (%)	RR (95% CI)^a	(rate x 100.000)	RR (95% CI)^a
Mapuche	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.