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Volume 14, Number 6—June 2008

Research

Tuberculosis from Mycobacterium bovis in Binational Communities, United States

Timothy C. Rodwell*Comments to Author , Marisa Moore†‡, Kathleen S. Moser†, Stephanie K. Brodine§, and Steffanie A. Strathdee*
Author affiliations: *University of California San Diego School of Medicine, La Jolla, California, USA; †County of San Diego Health and Human Services, San Diego, California, USA; ‡Centers for Disease Control and Prevention, San Diego, California, USA; §San Diego State University, San Diego, California, USA;

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Table 2

Univariate comparison of Mycobacterium bovis cases relative to M. tuberculosis cases, San Diego County, California, 2001–2005*

Characteristic No. (%)†M. bovis cases, 
n = 132 No. (%)† M. tuberculosis cases,
n = 1,192 Univariate p value
Sex 0.15
M 75 (56.8) 754 (63.2)
F
57 (43.2)
438 (36.7)

Age group, y <0.001
0–4 15 (11.4) 10 (0.8)
5–14 14 (10.6) 15 (1.3)
15–24 21 (15.9) 156 (13.1)
25–44 46 (34.8) 409 (34.3)
45–64 20 (15.2) 356 (29.9)
>64
16 (12.1)
246 (20.6)

Race/ethnicity <0.001‡
Hispanic 128 (96.9) 529 (44.3)
White 3 (2.27) 151 (12.6)
Asian 1 (0.75) 420 (35.2)
Black 0 86 (7.2)
Other
0
6 (1.0)

Country of birth <0.001
Mexico 79 (59.8) 382 (32.0)
United States 53 (40.2) 302 (25.3)
Philippines 0 248 (20.8)
Other
0
260 (21.8)

Previous TB 0.52
Yes 5 (3.8) 60 (5.0)
No 127 (96.2) 1128 (94.6)
Unknown§
0
4 (0.3)

Sputum AFB smear result 0.16
Positive 40 (30.3) 590 (49.4)
Negative 43 (32.5) 461 (38.6)
Not done§
49 (37.1)
141 (11.8)

Disease site <0.001
Pulmonary 71 (53.7) 1031 (86.4)
Extrapulmonary
61 (46.2)
161 (13.5)

Clinical manifestations <0.001
Single site disease 84 (63.6) 1036 (86.9)
Multisite disease
48 (36.4)
156 (13.1)

Chest radiograph lesions <0.001
No lesions 55 (41.7) 123 (10.3)
Pulmonary lesions consistent with TB 75 (56.8) 1063 (89.2)
Unknown§
2 (1.5)
6 (0.5)

HIV status <0.001
Negative 48 (36.4) 611 (51.3)
Positive 33 (25.0) 107 (9.0)
Unknown
51 (38.6)
474 (39.8)

Treatment outcome 0.02
Died before treatment completed 19 (14.3) 91 (7.6)
Alive at end of treatment 102 (77.2) 913 (76.5)
Unknown 11 (8.3) 188 (15.7)

*TB, tuberculosis; AFB, acid-fast bacillus.
†Percentages do not always add up to 100% due to rounding.
‡Fisher exact p value.
§Not included in χ2 calculation.

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