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Volume 24, Number 10—October 2018
Dispatch

Simple Estimates for Local Prevalence of Latent Tuberculosis Infection, United States, 2011–2015

Maryam B. HaddadComments to Author , Kala M. Raz, Timothy L. Lash, Andrew N. Hill, J. Steve Kammerer, Carla A. Winston, Kenneth G. Castro, Neel R. Gandhi, and Thomas R. Navin
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (M.B. Haddad, K.M. Raz, A.N. Hill, J.S. Kammerer, C.A. Winston, T.R. Navin); Emory University, Atlanta (M.B. Haddad, T.L. Lash, A.N. Hill, C.A. Winston, K.G. Castro, N.R. Gandhi)

Main Article

Table 2

Characteristics of 1,976 rural and 1,167 metropolitan counties, by estimated prevalence of latent TB infection, United States, 2011–2015*

Characteristic 1,976 rural counties
1,167 metropolitan counties
1,454 with estimated prevalence <1% 320 with estimated prevalence 1%–<3% 202 with estimated prevalence >3% 527 with estimated prevalence <1% 465 with estimated prevalence 1%–<3% 175 with estimated prevalence >3%
US Census 2010 data
Combined population of counties 28,727,127 11,750,121 5,816,158 37,414,210 115,341,399 109,697,523
Median county population, rounded 
to thousands
13,000
32,000
23,000

38,000
144,000
291,000
Estimated prevalence of Mycobacterium tuberculosis infection
Estimated no. infected in all counties 126,140 191,707 329,547 212,563 2,300,435 5,772,136
Estimated median no. infected/county
0
500
1,112

124
2,376
12,388
County population living in poverty, %†
<10 95 (7) 13 (4) 2 (1) 112 (21) 63 (14) 25 (14)
10–15.5 564 (39) 78 (24) 29 (14) 221 (42) 171 (37) 30 (17)
15.6–19.9 378 (26) 95 (30) 25 (12) 124 (24) 144 (31) 58 (33)
>20
417 (29)
134 (42)
146 (72)

70 (13)
87 (19)
62 (35)
Race/ethnic group in county with largest no. active TB cases reported
Black non-Hispanic 81 (15) 42 (13) 60 (30) 45 (14) 86 (18) 57 (33)
White non-Hispanic 241 (45) 109 (34) 34 (17) 142 (44) 110 (24) 17 (10)
Hispanic 74 (14) 58 (18) 60 (30) 25 (8) 82 (18) 43 (25)
Alaska Native/Native American or 
Pacific Islander 36 (7) 14 (4) 15 (7) 8 (2) 8 (2) 3 (2)
Asian 43 (8) 24 (8) 8 (4) 48 (14) 118 (25) 46 (26)
No predominant race/ethnic group 979 (67) 73 (23) 24 (12) 259 (49) 61 (13) 9 (5)

*Values are no. (%) unless otherwise noted. County equivalents (i.e., Alaska boroughs, District of Columbia, Louisiana parishes, and Virginia independent cities) are also shown. US Department of Agriculture 2013 Rural–Urban Continuum Codes were dichotomized (i.e., codes 4–9 were considered rural and codes 0–3 were considered metropolitan).
†County all-ages poverty level in 2011 as determined by US Census Bureau Small Area Income and Poverty Estimates.

Main Article

Page created: September 16, 2018
Page updated: September 16, 2018
Page reviewed: September 16, 2018
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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