Comparing an Interferon Gamma Release Assay with the Tuberculin Skin Test During Pregnancy: Implications for Tuberculosis Screening During Prenatal Care
Abstract Background Currently there are no guidelines regarding optimal screening for latent tuberculosis infection during pregnancy. Objective This study measures completion rates and the concordance between the TSPOT.TB, a commercially available interferon gamma release assay (IGRA), and the traditional tuberculin skin test (TST) in a predominantly urban minority obstetrics practice. Design This is an observational cohort study of 141 pregnant women enrolled from an obstetrics practice with a large immigrant population. Women with a history of a positive TST result were excluded. Demographic and clinical risk factors for tuberculosis were assessed. Enrolled women underwent a T-SPOT.TB test and placement of TST, and returned in 48–72 h for TST interpretation. We calculated the completion rate and frequency of a positive result for each test, as well as the concordance between the T-SPOT.TB and TST. Results Among the 141 women enrolled, 75 % were either Latina or African-American, 44 % were born in a country with a high TB prevalence, and 52 % had received the Bacillus Calmette-Guerin vaccine. Seven women (5 %) had a positive screening test, a total of 3 positive T-SPOT.TB results and 6 positive TST results, and all were from countries with a high TB prevalence. The concordance of the two tests was 96.3 %. The completion rate for the T-SPOT.TB was 98 %, while the completion rate for the TST was 63 %. Conclusion: The IGRA test had a markedly higher completion rate in addition to maintaining high concordance with the two-step TST in this population of pregnant women with a high prevalence of prior TB exposure. Targeted screening of women from countries with a high prevalence of tuberculosis may be warranted during prenatal care..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2015 |
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| Erschienen: |
2015 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:20 |
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| Enthalten in: |
Maternal and child health journal - 20(2015), 6 vom: 08. Dez., Seite 1314-1320 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Molina, Rose [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| BKL: | |
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| Themen: |
Immigrant |
| doi: |
10.1007/s10995-015-1896-6 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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SPR015446328 |
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| 520 | |a Abstract Background Currently there are no guidelines regarding optimal screening for latent tuberculosis infection during pregnancy. Objective This study measures completion rates and the concordance between the TSPOT.TB, a commercially available interferon gamma release assay (IGRA), and the traditional tuberculin skin test (TST) in a predominantly urban minority obstetrics practice. Design This is an observational cohort study of 141 pregnant women enrolled from an obstetrics practice with a large immigrant population. Women with a history of a positive TST result were excluded. Demographic and clinical risk factors for tuberculosis were assessed. Enrolled women underwent a T-SPOT.TB test and placement of TST, and returned in 48–72 h for TST interpretation. We calculated the completion rate and frequency of a positive result for each test, as well as the concordance between the T-SPOT.TB and TST. Results Among the 141 women enrolled, 75 % were either Latina or African-American, 44 % were born in a country with a high TB prevalence, and 52 % had received the Bacillus Calmette-Guerin vaccine. Seven women (5 %) had a positive screening test, a total of 3 positive T-SPOT.TB results and 6 positive TST results, and all were from countries with a high TB prevalence. The concordance of the two tests was 96.3 %. The completion rate for the T-SPOT.TB was 98 %, while the completion rate for the TST was 63 %. Conclusion: The IGRA test had a markedly higher completion rate in addition to maintaining high concordance with the two-step TST in this population of pregnant women with a high prevalence of prior TB exposure. Targeted screening of women from countries with a high prevalence of tuberculosis may be warranted during prenatal care. | ||
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