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Interferon-gamma Release Assays in children's

S El Azbaoui, A Sabri, S Ouraini, A Hassani, A Asermouh, A Agadr, R Abilkassem, N Dini, M Kmari, A Akhaddar, Z Laktati, S Aieche, N El Hafidi, F Ben Brahim, A A Bousfiha, F Ailal, C Deswarte, E Schurr, L Amar, J Bustamante, S Boisson-Dupuis, J L Casanova, L Abel, J El Baghdadi
SETTING: The utility of interferon-gamma release assays (IGRAs), such as the QuantiFERON-TB Gold In-Tube (QFT-GIT) test, in diagnosing active tuberculosis (TB) in children is unclear and depends on the epidemiological setting. OBJECTIVE: To evaluate the performance of QFT-GIT for TB diagnosis in children living in Morocco, an intermediate TB incidence country with high bacille Calmette-Gurin vaccination coverage. DESIGN: We prospectively recruited 109 Moroccan children hospitalised for clinically suspected TB, all of whom were tested using QFT-GIT...
December 2016: International Journal of Tuberculosis and Lung Disease
A T Cruz, A L Hersh, J R Starke, S E Beekmann, P M Polgreen, R Banerjee
OBJECTIVE: To evaluate the extent to which advancements in the diagnosis and treatment of latent tuberculous infection (LTBI) have been integrated into practice by pediatric infectious disease (PID) specialists. DESIGN: We conducted an online survey of the Infectious Diseases Society of America's Emerging Infections Network (EIN) membership. RESULTS: Of the 323 members, 197 (61%) responded: 7% cared for ⩾5 children with TB disease and 34% for ⩾5 children with LTBI annually...
November 2016: International Journal of Tuberculosis and Lung Disease
Begoña Santiago-García, Daniel Blázquez-Gamero, Fernando Baquero-Artigao, Jesús Ruíz-Contreras, Jose M Bellón, Maria A Muñoz-Fernández, María J Mellado-Peña
BACKGROUND: Children are at higher risk of tuberculosis (TB) dissemination and extrapulmonary disease, contributing greatly to TB-associated morbidity and long-term sequelae. However, there are very few studies that assess the impact and clinical spectrum of pediatric extrapulmonary TB (EPTB) in low-prevalence regions. METHODS: Children <18 years of age diagnosed with TB in Madrid region (2005-2013) were reviewed. We compared the epidemiology, clinical characteristics and the performance of diagnostic tests in childhood extrapulmonary and pulmonary disease...
November 2016: Pediatric Infectious Disease Journal
M Tebruegge, D Buonsenso, F Brinkmann, A Noguera-Julian, I Pavić, A Sorete Arbore, Z Vančíková, S Velizarova, S B Welch, N Ritz
SETTING: In June 2014, we became aware that shortages of purified protein derivative (PPD), the test substance used for the tuberculin skin test (TST), had occurred in several European health care institutions providing care for children with tuberculosis (TB). OBJECTIVE: To establish the extent of the shortage, a survey was performed. DESIGN: Survey conducted over a 1-month period (June-July 2014) among members of the Paediatric Tuberculosis Network European Trials Group (ptbnet)...
October 2016: International Journal of Tuberculosis and Lung Disease
Margret Johansson Gudjónsdóttir, Karsten Kötz, Ruth Stangebye Nielsen, Philip Wilmar, Sofia Olausson, Daniel Wallmyr, Birger Trollfors
BACKGROUND: Immigrants from countries with high incidence of tuberculosis (TB) are usually offered screening when they arrive to low incidence countries. The tuberculin skin test (TST) is often used. The interferon gamma release assays (IGRAs) are more specific and not affected by BCG vaccination. The aims of this study were 1. To see if there if there is a correlation between a positive IGRA (QFT) and presence of a BCG scar in children with TST ≥10 mm, 2. To compare the TST diameter with QFT result, 3...
October 6, 2016: BMC Infectious Diseases
Marc Tebruegge, Vanessa Clifford, Nigel Curtis
No abstract text is available yet for this article.
August 2016: Pediatric Infectious Disease Journal
Peter Auguste, Alexander Tsertsvadze, Joshua Pink, Rachel Court, Farah Seedat, Tara Gurung, Karoline Freeman, Sian Taylor-Phillips, Clare Walker, Jason Madan, Ngianga-Bakwin Kandala, Aileen Clarke, Paul Sutcliffe
BACKGROUND: Tuberculosis (TB), caused by Mycobacterium tuberculosis (MTB) [(Zopf 1883) Lehmann and Neumann 1896], is a major cause of morbidity and mortality. Nearly one-third of the world's population is infected with MTB; TB has an annual incidence of 9 million new cases and each year causes 2 million deaths worldwide. OBJECTIVES: To investigate the clinical effectiveness and cost-effectiveness of screening tests [interferon-gamma release assays (IGRAs) and tuberculin skin tests (TSTs)] in latent tuberculosis infection (LTBI) diagnosis to support National Institute for Health and Care Excellence (NICE) guideline development for three population groups: children, immunocompromised people and those who have recently arrived in the UK from high-incidence countries...
May 2016: Health Technology Assessment: HTA
Jennifer A Grinsdale, Shamim Islam, Olivia Chang Tran, Christine S Ho, L Masae Kawamura, Julie M Higashi
BACKGROUND: Interferon-gamma release assay utilization in pediatric tuberculosis (TB) screening is limited by a paucity of longitudinal experience, particularly in low-TB burden populations. METHODS: We conducted a retrospective review of QuantiFERON (QFT)-TB Gold results in San Francisco children from 2005 to 2008. Concordance with the tuberculin skin test (TST) was analyzed for a subset of children. Progression to active disease was determined through San Francisco and California TB registry matches...
June 2016: Journal of the Pediatric Infectious Diseases Society
Mohamed Refaat Beshir, Alaa Ebrahim Zidan, Hosam Fathi El-Saadny, Raghdaa Abdelaziz Ramadan, Nehad Ahmed Karam, Ezzat Kamel Amin, Marwa Zakaria Mohamed, Nahla Mohamed Abdelsamad
Bacille Calmette-Guérin vaccine (BCG) vaccination is used routinely in most of countries, especially developing one. The efficacy of the BCG vaccination generally decreases with time. The tuberculin skin test (TST) is a most popular diagnostic test for suspicion of tuberculosis (TB) in children till now, but it has many false positives. The interferon-gamma release assay (IGRA) is more specific than TST for detection of childhood TB, as it is more specific to Mycobacterium tuberculosis.Evaluate the interferon gamma response and TST reaction in BCG vaccinated children in east of Egypt...
April 2016: Medicine (Baltimore)
Lindsay A Hatzenbuehler, Jeffrey R Starke, Edward A Graviss, E O'Brian Smith, Andrea T Cruz
BACKGROUND: Screening for and treating tuberculosis (TB) infection in children and adolescents is an effective way of decreasing future TB cases. However, current approaches leave many children at risk for TB unidentified. METHODS: We recruited adolescent students from 2 public high schools (a magnet and a low-income) in the Houston Independent School District. Compared with the magnet school, the student population at the low-income school was larger, primarily Hispanic and economically disadvantaged...
July 2016: Pediatric Infectious Disease Journal
Bhanu Williams, Lucy Pickard, Louis Grandjean, Sue Pope, Sarah R Anderson, Gail Morgan, Amanda Williams
BACKGROUND: In January 2013 a secondary school pupil in London was diagnosed with sputum-smear positive pulmonary tuberculosis (TB) and was started on treatment. In April 2013 another pupil in the same year group at the same school was diagnosed with sputum-smear positive pulmonary TB. Pupils in the same year were then screened for tuberculosis. METHODS: Interferon gamma release assay (IGRA) testing was used to identify those infected with tuberculosis. Further tests were conducted to identify contacts with active tuberculosis disease and specimens were sent for genotypic testing...
March 3, 2016: Journal of Public Health
Sahar Nejat, Rutger Bennet
AIM: Increasing numbers of migrants to Sweden are screened for tuberculosis (TB), and a rational approach to screening is required. We evaluated positive tuberculin skin tests (TSTs) and interferon-gamma release assays (IGRAs) on paediatric migrants in relation to the TB incidence in the corresponding foreign-born populations in Stockholm. METHODS: This study examined the characteristics of migrants under the age of 18 who were referred to a paediatric TB clinic at Karolinska University Hospital from 2008 to 2014 by primary care centres in Stockholm County...
June 2016: Acta Paediatrica
Miguel Santin, José-María García-García, José Domínguez
INTRODUCTION: Interferon-gamma release assays are widely used for the diagnosis of tuberculosis infection in low-prevalence countries. However, there is no consensus on their application. The objective of this study was to develop guidelines for the use of interferon-gamma release assays in specific clinical scenarios in Spain. METHODS: A panel of experts comprising specialists in infectious diseases, respiratory diseases, microbiology, pediatrics and preventive medicine, together with a methodologist, formulated the clinical questions and outcomes of interest...
May 2016: Enfermedades Infecciosas y Microbiología Clínica
Phil Lowenthal, Pennan M Barry, Jennifer Flood
BACKGROUND: Since 2007, immigration applicants 2-14 years old with a tuberculin skin test (TST) ≥10 mm and an otherwise negative evaluation for tuberculosis (TB) are assigned a classification for TB infection and instructed to seek domestic evaluation upon arrival in the US in accordance with Centers for Disease Control and Prevention instructions. We examined the characteristics and outcome of domestic evaluation of immigrant children who arrived in California with a positive TST on preimmigration examination to inform the preimmigration TB screening process...
March 2016: Pediatric Infectious Disease Journal
Lin Sun, Jian-ling Tian, Qing-qin Yin, Jing Xiao, Jie-qiong Li, Ya-jie Guo, Guo-shuang Feng, Xiao-xia Peng, Hui Qi, Fang Xu, Wei-wei Jiao, Chen Shen, A-dong Shen
Interferon Gamma Release Assays (IGRAs) were developed for the indirect or immunologic diagnosis of tuberculosis infection; however, they have also been used to assist in difficult to diagnose cases of tuberculosis disease in adults, and to a lesser extent, in children, especially in those under 5 years old. We evaluated the utility of using an IGRA in pediatric tuberculosis in younger children in a hospital setting. The diagnostic accuracy of T-SPOT.TB and TST was assessed in 117 children with active tuberculosis and 413 children with respiratory tract infection...
2015: PloS One
Philip N Britton, Veronica Yeung, Chris Lowbridge, David Isaacs, Ben J Marais
BACKGROUND: Tuberculosis (TB) notification rates in Australia have plateaued at a low level, but the pediatric disease burden remains poorly described. Child cases provide a marker of recent transmission and present unique diagnostic challenges. METHODS: We performed an audit of all children (<18 years of age) treated for TB at the Children's Hospital at Westmead, Sydney, Australia from January 2008 to December 2011. Demographics, clinical presentation, diagnostics, disease profile, treatment, and outcome were reviewed...
September 2013: Journal of the Pediatric Infectious Diseases Society
Alice Pong, Kathleen S Moser, Sung Min Park, Anthony Magit, Maria Isabel Garcia, John S Bradley
QuantiFERON-TB Gold In-Tube (QFT-GIT) and tuberculin skin test (TST) results are reported in 23 children with active tuberculosis due to Mycobacterium tuberculosis and Mycobacterium bovis. Overall QFT-GIT (96%) was more sensitive than TST (74%) for detecting tuberculosis infection in these patients.
March 2012: Journal of the Pediatric Infectious Diseases Society
V Amanatidou, E Critselis, A Trochoutsou, A Soldatou, K Benetatou, N Spyridis, N G Papadopoulos, M N Tsolia
OBJECTIVE: To assess interferon-gamma inducible protein 10 (IP-10) as a diagnostic marker for tuberculous infection in children, particularly in relation to its differential diagnostic performance in young children. DESIGN AND RESULTS: A case-control study was conducted among 161 children and adolescents (mean age 6.3 years ± standard deviation 1.7; males n = 79, 49%). Fifty-four (33.5%) had active TB, 53 (33%) had latent tuberculous infection (LTBI), and 54 (33...
December 2015: International Journal of Tuberculosis and Lung Disease
A T Cruz, B J Martinez
In the last century, the United States has transitioned from a high to a low tuberculosis (TB) incidence country. A major factor in this decline has been the emphasis on identification and treatment of patients with tuberculous infection. While identification, testing, and preventive therapy pose challenges, recent developments in childhood TB offer more options for effective strategies that are acceptable to both children and their families. These include screening and testing in non-traditional settings, use of more specific assays (interferon-gamma release assays) for testing, and implementation of shorter-course preventive regimens...
December 2015: International Journal of Tuberculosis and Lung Disease
Teresa Bielecka, Anna Komorowska-Piotrowska, Agnieszka Mazur, Wojciech Feleszko
Tuberculosis morbidity rates in Poland have been gradually decreasing. Nevertheless, there are approximately 8 thousand cases being registered annually, which includes almost 3 thousand massively infectious patients. In the last 3 years, around 100 cases/year have been reported among children below 14 years of age. Infection with Mycobacterium tuberculosis should be considered in all patients who present symptoms suggesting tuberculosis, have had recent contact with a person suffering from lung tuberculosis or are planned to undergo an immunosuppressive treatment...
October 13, 2015: Postȩpy Higieny i Medycyny Doświadczalnej
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