Trends in Tuberculosis, 2007– United States
||Trends in Tuberculosis, 2007
– United States
How many cases of tuberculosis (TB) were reported
in the United States in 2007?
In total, 13,299 TB cases (a rate of 4.4 cases per
100,000 persons) were reported in the United States in 2007. Both
the number of TB cases reported and the case rate decreased; this
represents a 3.3% and 4.2% decline, respectively, compared to 2006.
The TB rate in 2007 was the lowest recorded since national reporting
began in 1953.
Is the rate of TB declining in the United States?
Yes. The TB rate has been going down in the United
States each year since 1992. However, progress has slowed in the
recent years. The average annual percentage decline in the TB rate
slowed from 6.6% for 1993 through 2002, to an annual average decline
of 3.3% for 2003 through 2007.
How do the TB rates compare between U.S.-born
persons and foreign-born persons living in the United States?
In 2007, the TB rate in foreign-born persons in the
United States (20.7 cases per 100,000 persons) was nearly 10* times
greater than that of U.S.-born persons (2.1 cases per 100,000
persons). Also of note, 58% of all TB cases in the United States
occurred in foreign-born persons in 2007.
* Ratio calculation is based on unrounded data values.
How many people died from TB in the United States?
There were 644 deaths from TB in 2006. Compared to
1996 data, when 1,202 deaths from TB occurred, this represents a 46%
decrease in TB deaths in the last decade.
What are the rates of TB for different racial and
American Indians or Alaska Natives: 5.9 cases
per 100,000 persons
Asians: 26.3 cases per 100,000 persons
Blacks: 9.4 cases per 100,000 persons
Native Hawaiians and other Pacific Islanders: 23.0
cases per 100,000 persons
Hispanics or Latinos: 8.5 cases per 100,000 persons
Whites: 1.1 cases per 100,000 persons
† For this report, persons identified as white, black,
Asian, American Indian/Alaska Native, native Hawaiian or other Pacific
Islander, or of multiple races are all non-Hispanic. Persons identified
as Hispanic may be of any race.
Is multidrug-resistant tuberculosis (MDR TB) on the
Since 1993, when the TB surveillance system was
expanded to include drug-susceptibility results, reported MDR TB
cases have decreased in the United States. Among all reported TB
cases in the United States, the percentage of primary multidrug-resistant
(MDR) TB* cases decreased from 2.5% (407 cases) in 1993 to
approximately 1.1% (98 cases) in 2007.
Since 1997, the percentage of U.S.-born patients with MDR TB has
remained < 1.0%. However, of the total number of reported primary
MDR TB cases, the proportion occurring in foreign-born persons
increased from 25.5% (103 of 407) in 1993, to 80% (78 of 98) in
*Primary multidrug-resistant TB (MDR TB) is defined
as no previous history of TB disease and is resistant to at least
isoniazid and rifampin, the two best first-line TB treatment drugs.
How are TB data collected?
Data on TB cases are reported to CDC from 60
reporting areas, including the 50 states, the District of Columbia,
New York City, Puerto Rico, and seven other U.S. jurisdictions in
the Pacific and Caribbean. These cases must meet the CDC/Council of
State and Territorial Epidemiologists
case definition. When cases are reported, specific information
is provided about the person with TB. This includes the patient’s
race, ethnicity (either Hispanic or non-Hispanic), treatment
information, and when available, drug-susceptibility test results.
CDC calculates national and state TB rates, and rates for
foreign-born, U.S.-born, and racial/ethnic populations. These
calculations use U.S. census population estimates for the years 1993
Where can I find TB data for my state?
The most recent surveillance report, Reported
Tuberculosis in the United States, 2007, has TB data from 60
reporting areas. If you need additional state-specific data not
available in this report, you can contact your state TB control office.
Tuberculosis in the United States, 2007. Atlanta, GA: U.S.
Department of Health and Human Services, CDC, October 2008.
CDC. Questions and Answers
CDC. The Difference Between Latent
TB Infection and Active TB Disease.
Tuberculosis (MDR TB).
State TB Control Offices
Online Tuberculosis Information System (OTIS)
The Online Tuberculosis Information System (OTIS) is a
query-based system containing information on verified tuberculosis
(TB) cases reported to the Centers for Disease Control and