Table 3.

Demographics by confirmed and probable case definitions, 2008–2012, (CRFs)

	Confirmed, N = 139		Probable, N = 10,217
	n	%	n	%
Gender
Male	77	55	6,481	63
Female	46	33	3,575	35
Unknown	16	12	161	2
Age group (years)
< 10	20	14	577	6
10–19	14	10	805	8
20–29	3	2	941	9
30–39	13	9	1,212	12
40–49	21	15	1,668	16
50–59	26	19	1,888	18
60–69	23	17	1,659	16
70+	9	6	1,142	11
Unknown	10	7	325	3
Race
White	89	64	7,156	70
Black	1	1	292	3
American Indian/Alaska Native	16	12	510	5
Asian/Pacific Islander	0	0	37	0
Other	0	0	17	0
Unknown	33	24	2,205	22
Ethnicity
Hispanic	4	3	328	3
Non-Hispanic	81	58	6,797	67
Unknown	54	39	3,092	30
Immune status
Immunocompromised	7	5	451	4
Not immunocompromised	82	59	5,017	49
Unknown	50	36	4,749	46
Life-threatening complications
One or more	14	10	315	3
None	122	88	9,675	95
Unknown	3	2	227	2
Hospitalization status
Hospitalized	51	37	2,165	21
Not hospitalized	61	44	6,168	60
Unknown	27	19	1,884	18
Final outcome
Died	12	9	24	0.2
Did not die	100	72	8,518	83
Unknown	27	19	1,675	16

CRFs = case report forms.