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Surveillance, Epidemiology, and Outbreak Investigations Branch Division of Tuberculosis Elimination Centers for Disease Control and Prevention (CDC) Epidemiology.

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Presentation on theme: "Surveillance, Epidemiology, and Outbreak Investigations Branch Division of Tuberculosis Elimination Centers for Disease Control and Prevention (CDC) Epidemiology."— Presentation transcript:

1 Surveillance, Epidemiology, and Outbreak Investigations Branch Division of Tuberculosis Elimination Centers for Disease Control and Prevention (CDC) Epidemiology of Pediatric Tuberculosis in the United States, 1993–2014 National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention Division of Tuberculosis Elimination

2 Pediatric Tuberculosis—Background Definition of pediatric tuberculosis (TB): TB disease in a person < 15 years old In 2014: 9,421 TB cases were reported among all age groups –460 (4.9%) were pediatric Age GroupN Percent out of all age groups 0 – 4 years2622.8% 5 – 14 years1982.1%

3 2009 TB Case Definition and Verification Incident case of disease Case verification categories:  Laboratory confirmed cases –Positive culture or nucleic acid amplification test –Positive Acid-Fast Bacillus smear when culture not attainable  Clinical case definition –Positive tuberculin skin test or positive interferon gamma release assay –Signs and symptoms of TB disease –Current treatment for TB disease –Completed diagnostic evaluation  Provider diagnosis –Diagnosed by health care provider –Does not fulfill all criteria necessary to meet laboratory or clinical case definitions

4 TB Cases, All Ages, by Age Group, 1993–2014 Year Number of TB Cases

5 TB Case Rates, All Ages, by Age Group, 1993–2014 Year TB Case Rate per 100,000 Note: Rates presented on a logarithmic scale

6 Percentage of Pediatric TB Cases by Age Group, 1993–2014 N=20,789

7 Year Number of TB Cases Pediatric TB Cases by Age Group, 1993–2014 N=20,789

8 Year TB Case Rate per 100,000 Note: Rates presented on a logarithmic scale Pediatric TB Case Rates by Age Groups, 1993–2014 N=20,789

9 Year Note: Unknown, multiple race/ethnicity, and Native Hawaiian and Other Pacific Islander not shown Pediatric TB Cases by Race/Ethnicity, 1993–2014 N=20,789 Number of TB Cases

10 Pediatric TB Case Rates by Race/Ethnicity, 1993–2014 N=20,789 TB Case Rate per 100,000 Note: Rates presented on a logarithmic scale. American Indian/Alaska Native and Native Hawaiian and Other Pacific Islander rate not shown because of small denominators

11 Year TB Case Rate per 100,000 *Case data totals beginning in 1993. Note: Rates presented on a logarithmic scale. Population data not available before 1994. Pediatric TB Case Rates by Age Groups U.S.-born, 1994–2014 N=15,522*

12 Year TB Case Rate per 100,000 *Case data totals beginning in 1993. Note: Rates presented on a logarithmic scale. Population data not available before 1994. Pediatric TB Case Rates by Age Groups Foreign-born, 1994–2014 N=5,191*

13 Number and Percentage of Pediatric TB Cases by U.S. and Foreign Birth, 1993–2014 Number of Pediatric TB Cases (%)

14 Number of Pediatric TB Cases with Foreign Birth by Birth Country*, by 7-Year Intervals, 1994–2014 N=4,778 * Ranked by counts 1994–20002001–20072008–2014 Country(n)Country(n)Country(n) Mexico(836)Mexico(563)Mexico(129) Philippines(182)Somalia(123)Ethiopia(90) Viet Nam(119)Philippines(109)Philippines(81) Somalia(87)Haiti(77)Burma(65) Haiti(62)Ethiopia(65)Haiti(53) Russia(61)Viet Nam(57)Somalia(45) Other(761)Other(721)Other(492)

15 States with the Greatest Percentage of Total Pediatric TB Cases, 1993–2014 N=20,789

16 States with Greatest Numbers of Pediatric TB Cases, 1993–2014 Pediatric TB Cases StateNumberPercent*Rate** California4,9326.92.9 Texas2,6047.12.3 New York1,6604.52.0 Florida1,1104.61.6 Georgia9327.72.3 Illinois9076.21.6 All others8,6445.91.1 Overall U.S.20,7896.11.6 *Average percentage of total state cases that are pediatric, for all years **Time-averaged annual rate per 100,000

17 States with Greatest Percentage of Pediatric TB Cases, 1993–2014 *Average percentage of total state cases that are pediatric, for all years **Time-averaged rate per 100,000 Pediatric TB Cases StateNumberPercent*Rate** Alaska16511.64.8 Oklahoma36210.52.2 Rhode Island9510.32.3 Minnesota39310.01.7 North Dakota179.10.6 South Dakota338.80.9 All others19,7246.01.6 Overall U.S.20,7896.11.6

18 States with Greatest Rate of Pediatric TB Cases, 1993–2014 Pediatric TB Cases StateNumberPercent*Rate** Alaska16511.64.8 D.C. † 704.13.5 California4,9326.92.9 Texas2,6047.12.3 Georgia9327.72.3 Rhode Island9510.32.2 All others11,9915.51.2 Overall U.S.20,7896.11.6 *Average percentage of total state cases that are pediatric, for all years **Time-averaged rate per 100,000 † D.C. (District of Columbia) is a distinct reporting jurisdiction

19 Pediatric TB Cases by Case Verification Criteria*, 1993–2014 N=20,789 Provider Diagnosis 23% Clinical Case 51% Laboratory Confirmed 26% *Based on the public health surveillance definition for TB [MMWR 1997:46(No. RR-10):40-41]

20 Laboratory Confirmed Clinical Case Provider Diagnosis Pediatric TB Cases by Case Verification Criteria and Age Group, 1993–2014 N=20,789

21 Pediatric TB Cases by Site of Disease, 1993–2014 *Any extrapulmonary involvement which includes cases that are extrapulmonary only and both. Patients may have more than one disease site but are counted in mutually exclusive categories for surveillance purposes. Any extrapulmonary involvement* (totaling 29.4%) Extrapulmonary site (%) Lymphatic18.8% Meningeal3.5% Miliary1.3% Bone & Joint1.5% Other4.3%

22 Pulmonary Extrapulmonary Both Pediatric TB Cases by Site of Disease and Age Group, 1993–2014 N=20,789

23 Pediatric TB Cases with Any Extrapulmonary Involvement* by Age Group and Selected Sites of Disease, 1993–2014 N=20,789 Site of Disease Age <1 (n =2,105) Age 1–4 (n=10,141) Age 5–9 (n=4,666) Age 10–14 (n=3,877) Lymphatic7.9%19.2%22.1%19.4% Meningeal8.3%3.9%1.6%2.1% Miliary4.7%1.1%0.5%1.1% Bone & Joint0.4%1.3%1.8%2.3% Other3.4%2.6%4.5%9.0% Total24.7%28.1%30.5%33.9% * “Any extrapulmonary involvement” includes: 1.) extrapulmonary only, and 2.) both extrapulmonary and pulmonary. Note: Combine the total extrapulmonary percent shown with the pulmonary percentage in slide #22 to obtain 100% for each age group.

24 Percentage of TB Cases in Children Age < 1 Year With Any Extrapulmonary Involvement*, 1993–2014 N=2,105 Site of disease U.S.-born (n=1,955) Foreign-born (n=145) Lymphatic7.2%17.9% Meningeal8.7%2.7% Miliary4.8%3.5% Bone & Joint0.3%0.7% Other3.4%3.5% Total24.4%28.3% * “Any extrapulmonary involvement” includes: 1.) extrapulmonary only, and 2.) both extrapulmonary and pulmonary.

25 Percentage of TB Cases in Children Age 1–4 Years With Any Extrapulmonary Involvement*, 1993–2014 N=10,141 Site of disease U.S.-born (n=8,440) Foreign-born (n=1,659) Lymphatic19.3%18.7% Meningeal 4.4% 1.9% Miliary 1.1% 0.9% Bone & Joint 1.2% 2.2% Other 2.7% 2.0% Total28.7%25.7% * “Any extrapulmonary involvement” includes: 1.) extrapulmonary only, and 2.) both extrapulmonary and pulmonary.

26 Percentage of TB Cases in Children Age 5–9 Years With Any Extrapulmonary Involvement*, 1993–2014 N=4,666 Site of disease U.S.-born (n=3,086) Foreign-born (n=1,561) Lymphatic23.3%19.8% Meningeal2.0%1.0% Miliary0.5%0.6% Bone & Joint1.5%2.4% Other4.7%4.2% Total32.0%28.0% * “Any extrapulmonary involvement” includes: 1.) extrapulmonary only, and 2.) both extrapulmonary and pulmonary.

27 Percentage of TB Cases in Children Age 10–14 Years With Any Extrapulmonary Involvement*, 1993–2014 N=3,877 Site of disease U.S.-born (n=2,041) Foreign-born (n=1,826) Lymphatic20.3%18.5% Meningeal2.2%2.0% Miliary1.5%0.7% Bone & Joint2.0%2.6% Other10.0%7.7% Total36.0%31.5% * “Any extrapulmonary involvement” includes: 1.) extrapulmonary only, and 2.) both extrapulmonary and pulmonary.

28 Pediatric TB Cases by HIV Status, 1993–2013* N=20,329 Information on HIV results is not available for the majority of pediatric TB cases (74.1%) *California HIV data missing from 2005 - 2010; Vermont HIV data through 2006 only. **Pediatric TB cases with positive HIV test results divided by all pediatric TB cases. Note: Through 2004, California only reported positive HIV test results based on TB and AIDS registry matching; all other California TB cases were classified as “Unknown.” Pediatric TB cases with HIV-positive test results, minimum estimate** 0.9% Pediatric cases with HIV-positive test results of those patients with known results 3.4%

29 Number and Percentage of Culture- Confirmed Pediatric TB Cases with Drug Resistance, 1993–2013 First line drugs are isoniazid, rifampin, pyrazinamide and ethambutol MDR TB = resistance to at least isoniazid and rifampin

30 Year Percentage *Pediatric TB cases with patient alive at diagnosis and started on treatment Pediatric TB Cases by Use of Directly Observed Therapy (DOT), 1993–2012 N=19,782*

31 Pediatric TB Cases by Treatment Outcome 1993–2012 N=19,782* OutcomeCases% Completed treatment18,89895.6 Moved3972.0 Lost to follow-up1620.8 Died1030.5 Other**2221.1 Note: Cause of death not recorded in TB case reports until 2009; “Moved” no longer a valid response *Pediatric TB cases with patient alive at diagnosis and started on treatment **Other includes refused, other, unknown, adverse drug reaction, and missing

32 Deaths Occurring Among Pediatric TB Cases, by Age Group, 1993–2012 N=19,782 Age GroupCasesDeaths*% of Cases Age < 11,975381.9 Age 1–49,671620.6 Age 5–94,459280.6 Age 10–143,677240.7 Note: Cause of death not recorded in TB case reports for the full time period analyzed *Death includes died during therapy or dead at TB diagnosis

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