Table 1:

Completed Case Studies on Tuberculosis (TB)^a

	Government Level and Population Size	Geographic Region	Population Impacted and Topic	Year(s) of TB Cases/Outbreak
1	State – medium	Southwest	Immigrants	2006–2008
2	Local – small metropolitan area	Midwest	Extensive outbreak	2012–2014
3	Local – large central metropolitan area	Northeast	Health care facility	2013
4	State – small	Northeast	College	2014
5	Local – Multi-county, serves micropolitan, small, and medium metropolitan areas	Southeast	Port	2014
6	Federal		Cross-border	2010
7	State – medium	Southeast	Correctional facility	2014
8	Local – large fringe metropolitan area	Southeast	High school	2012–2013
9	Local – medium metropolitan area	West	Law enforcement involvement	2014
10	Local – small metropolitan area	Midwest	Extensive outbreak	2013
11	Local – large central metropolitan area	Midwest	Homeless	2014
12	Local – large central metropolitan area	West	Homeless	2007–2013

^aNotes: State population sizes are categorized as follows: small, < 3 million; medium, between 3 and 10 million; large, > 10 million.

Local population size classifications follow the National Center for Health Statistics 2013 Urban-Rural Classification Scheme for Counties: 1, large central metro; 2, large fringe metro; 3, medium metro; 4, small metro; 5, micropolitan; 6, noncore.^b Geographic regions are defined as follows: West is California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Washington, Wyoming; Southwest is Arizona, New Mexico, Oklahoma, Texas; Midwest is Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin; Southeast is Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, Tennessee, South Carolina, Virginia, West Virginia; and Northeast is Connecticut, Delaware, District of Columbia, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont.

^bSource: Ingram DD, Franco SJ. 2013 NCHS Urban-Rural Classification Scheme for Counties. National Center for Health Statistics; 2014. https://www.cdc.gov/nchs/data/series/sr_02/sr02_166.pdf.