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Latent TB infection

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https://www.readbyqxmd.com/read/28329197/systematic-review-meta-analysis-and-cost-effectiveness-of-treatment-of-latent-tuberculosis-infection-to-reduce-progression-to-multidrug-resistant-tuberculosis
#1
Suzanne M Marks, Sundari R Mase, Sapna Bamrah Morris
Background: Evidence-based recommendations for treating persons having presumed latent tuberculosis infection (LTBI) after contact to infectious multidrug-resistant tuberculosis (MDR TB) are lacking because published data consist of small observational studies. TB incidence in persons treated for latent multidrug-resistant-TB infection (MDR LTBI) is unknown. Methods: We conducted a systematic review of studies published (1/1/1994-12/31/2014) to analyze TB incidence, treatment completion and discontinuation, and cost effectiveness...
March 14, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28329119/stratification-of-latent-tuberculosis-infection-by-cellular-immune-profiling
#2
Alice Halliday, Hilary Whitworth, Sherine Hermagild Kottoor, Umar Niazi, Sarah Menzies, Heinke Kunst, Samuel Bremang, Amarjit Badhan, Peter Beverley, Onn Min Kon, Ajit Lalvani
Background: Recently-acquired and remotely-acquired latent tuberculosis (TB) infection (LTBI) are clinically indistinguishable, yet recent acquisition of infection is the greatest risk factor for progression to active TB (ATB) in immunocompetent individuals. We aimed to evaluate the ability of cellular immune signatures which differ between ATB and LTBI, to distinguish recently from remotely acquired LTBI. Methods: Fifty-nine individuals were recruited: ATB (n=20); recent LTBI (n=19); remote LTBI (n=20)...
February 28, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28328809/infectious-diseases-prevalence-vaccination-coverage-and-diagnostic-challenges-in-a-population-of-internationally-adopted-children-referred-to-a-tertiary-care-children-s-hospital-from-2009-to-2015
#3
Sara Sollai, Francesca Ghetti, Leila Bianchi, Maurizio de Martino, Luisa Galli, Elena Chiappini
Infectious diseases are common in internationally adopted children (IAC).With the objective to evaluate infectious diseases prevalence in a large cohort of IAC and to explore possible risk factors for tuberculosis (TB) and parasitic infections, clinical and laboratory data at first screening visit of all IAC (<18 years) consecutively referred to our Center in 2009 to 2015 were collected and analyzed.In total, 1612 children (median age: 5.40 years; interquartile range: 3.00-7.90) were enrolled, 123/1612 (7...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327495/risk-factors-for-latent-tuberculosis-infection-ltbi-in-health-profession-s-students-of-the-university-of-parma
#4
Silvia Bonini, Maria Grazia Riccelli, Matteo Goldoni, Luisella Selis, Massimo Corradi
BACKGROUND AND AIM OF THE WORK: Nowadays Tuberculosis (TB) is one of the major Public Health problems for several professional categories. According to Italian law, University students are compared to workers: the main risk for them is represented by biological risk, in particular by blood-transmitted or by air-transmitted agents. As for TB, many scientific studies demonstrated that prevalence of latent tuberculosis infection (LTBI) in Medicine and Surgery students was lower than those in health workers and in general population...
March 14, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28323150/systematic-expression-profiling-analysis-mines-dys-regulated-modules-in-active-tuberculosis-based-on-re-weighted-protein-protein-interaction-network-and-attract-algorithm
#5
Ying Sun, Yan Weng, Ying Zhang, Xiang Yan, Lei Guo, Jia Wang, Xin Song, Ying Yuan, Fu-Ye Chang, Chun-Ling Wang
About 90% of tuberculosis (TB) patients latently infected with Mycobacterium tuberculosis (Mtb) show no symptoms, yet have a 10% chance in lifetime to progress active TB. Nevertheless, current diagnosis approaches need improvement in efficiency and sensitivity. The objective of this work was to detect potential signatures for active TB to further improve the understanding of the biological roles of functional modules involved in this disease. First, targeted networks of active TB and control groups were established via re-weighting protein-protein interaction (PPI) networks using Pearson's correlation coefficient (PCC)...
March 17, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28318613/latent-tuberculosis-infection-screening-prior-to-biological-treatment-in-tunisian-patients
#6
Marwa Slouma, Ines Mahmoud, Olfa Saidane, Selma Bouden, Leila Abdelmoula
OBJECTIVES: The screening of latent tuberculosis infection (LTBI) is necessary to prevent infection in patients with chronic inflammatory disease (CID) undergoing biological treatment. We aimed to assess the efficacy of LTBI screening prior to biological treatment in Tunisia, considered as a high-incidence area of active TB disease. METHODS: We conducted a retrospective study over a period of 8 years [2007-2014] including patients with chronic inflammatory rheumatism receiving biologic agents since at least 6 months...
February 24, 2017: Thérapie
https://www.readbyqxmd.com/read/28317810/comparison-of-cost-effectiveness-between-the-quantiferon-tb-gold-in-tube-and-t-spot-tests-for-screening-health-care-workers-for-latent-tuberculosis-infection
#7
Shigeto Mukai, Katsumi Shigemura, Fukashi Yamamichi, Koichi Kitagawa, Nozomi Takami, Masashi Nomi, Soichi Arakawa, Masato Fujisawa
OBJECTIVE/BACKGROUND: There are several methods used to screen for latent tuberculosis (TB) infection (LTBI) including the QuantiFERON-TB Gold-in-Tube (QFT-GIT) and T-SPOT-TB (T-SPOT) tests. Many studies have reported the equivalence of these two methods, but it is unclear which of them is more cost effective. We investigated the age and cost issues of these tests in screening for LTBI among health-care workers. MATERIALS AND METHODS: One hundred and forty new employees during 2008-2011 in our hospital were screened using the QFT-GIT test, and 140 new employees during 2011-2014 were screened with the T-SPOT test for LTBI...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28317801/utility-of-quantiferon-tuberculosis-gold-in-tube-test-for-detecting-latent-tuberculosis-infection-among-close-household-contacts-of-confirmed-tuberculosis-patients-in-accra-ghana
#8
Gloria Ivy Mensah, Sandra Akoley Sowah, Nana Yaw Asare Yeboah, Kennedy Kwasi Addo, Dolly Jackson-Sillah
OBJECTIVE/BACKGROUND: Introduction of the interferon gamma (IFN-γ) release assays with their higher sensitivity and specificity over the traditional tuberculin skin test has improved testing for latent tuberculosis infection (LTBI). None of the IFN-γ release assays has ever been used to screen for LTBI in Ghana. This study set out to determine the utility of the QuantiFERON TB Gold-in-Tube (QFT-GIT) test for the diagnosis of LTBI among close household contacts of newly diagnosed sputum smear-positive tuberculosis (TB) patents in Accra, Ghana, and the associated risk factors for a positive QFT-GIT test...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28317400/nanodiagnostics-for-tuberculosis-detection
#9
Hesham El-Samadony, Asma Althani, Mohamed Awad Tageldin, Hassan M E Azzazy
Introduction Tuberculosis (TB) is a leading killer worldwide. End TB strategy aims at ending the TB epidemic by 2030. Early, accurate, and affordable diagnosis represents a cornerstone to achieve this goal. Innovative strategies for TB diagnostics have been introduced, however the ideal assay is yet unavailable and conventional methods remain necessary for diagnosis. Unique properties of nanoparticles (NPs) have allowed their utilization in TB detection via targeting disease biomarkers. Area Covered Until now, around thirty-five TB NP-based assays have been partially or fully characterized...
March 20, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28298455/evaluation-of-quantiferon%C3%A2-tb-gold-plus-in-healthcare-workers-in-a-low-incidence-setting
#10
Hee-Won Moon, Rajiv L Gaur, Sara Shu-Hwa Tien, Mary Spangler, Madhukar Pai, Niaz Banaei
Background: Although launched in 2015, little is known about the accuracy of QuantiFERON-TB Gold-Plus (QFT-Plus) for diagnosis of latent M. tuberculosis infection (LTBI). Unlike its predecessor, QFT-Plus utilizes two antigen tubes to elicit an immune response from CD4+ and CD8+ T lymphocytes. We conducted a cross-sectional study in low-risk healthcare workers (HCWs) at a single U.S. center to compare QFT-Plus to QuantiFERON-TB Gold in-tube (QFT).Method: 989 HCWs were tested with both QFT and QFT-Plus. Risk factors for LTBI were obtained from a questionnaire...
March 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28298223/migration-to-middle-income-countries-and-tuberculosis-global-policies-for-global-economies
#11
Julia Moreira Pescarini, Laura Cunha Rodrigues, M Gabriela M Gomes, Eliseu Alves Waldman
BACKGROUND: International migration to middle-income countries is increasing and its health consequences, in particular increasing transmission rates of tuberculosis (TB), deserve consideration. Migration and TB are a matter of concern in high-income countries and targeted screening of migrants for active and latent TB infection is a main strategy to manage risk and minimize transmission. In this paper, we discuss some aspects of TB control and migration in the context of middle-income countries, together with the prospect of responding with equitable and comprehensive policies...
March 15, 2017: Globalization and Health
https://www.readbyqxmd.com/read/28293431/promoting-adherence-to-treatment-for-latent-tb-infection-through-mobile-phone-text-messaging-study-protocol-for-a-pilot-randomized-controlled-trial
#12
Eyal Oren, Melanie L Bell, Francisco Garcia, Carlos Perez-Velez, Lynn B Gerald
BACKGROUND: An estimated two billion people, over one third of the world's population, have latent infection with Mycobacterium tuberculosis (LTBI). Patient adherence to LTBI treatment is currently poor given that individuals show no symptoms of illness and may not feel that they are at risk of developing active tuberculosis (TB). Short text messages can serve as a simple reminder to take medications and address barriers to adherence such as forgetfulness and lack of social support. METHODS/DESIGN: We aim to determine the feasibility and acceptability of text reminders for improving adherence in latent TB patients using a randomized controlled single-blinded trial, measuring adherence through an increase in treatment completion rates...
2017: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/28292277/poor-predictability-of-quantiferon-tb-assay-in-recipients-and-donors-for-tuberculosis-development-after-kidney-transplantation-in-an-intermediate-tb-burden-country
#13
Enkthuya Jambaldorj, Miyeun Han, Jong Cheol Jeong, Tai Yeon Koo, Sang Il Min, Eun Young Song, Jongwon Ha, Curie Ahn, Jaeseok Yang
BACKGROUND: Tuberculosis (TB) is a common opportunistic infection after kidney transplantation (KT). The QuantiFERON-TB-Gold In-Tube test (QFT) is widely used for assessing latent TB; however, it is currently unclear whether the pre-KT QFT of the recipient and donor can predict post-KT TB. METHODS: We retrospectively reviewed patients who received KT between January 2009 and December 2015 at Seoul National University Hospital. The QFT was performed in 458 KT recipients and 239 paired living donors, and 138 KT recipients underwent both the QFT and tuberculin skin test (TST)...
March 14, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28284258/mycobacterium-tuberculosis-infection-among-persons-who-inject-drugs-in-san-diego-california
#14
R F Armenta, K M Collins, S A Strathdee, M A Bulterys, F Munoz, J Cuevas-Mota, P Chiles, R S Garfein
BACKGROUND: Persons who inject drugs (PWID) might be at increased risk for Mycobacterium tuberculosis infection and reactivation of latent tuberculous infection (LTBI) due to their injection drug use. OBJECTIVES: To determine prevalence and correlates of M. tuberculosis infection among PWID in San Diego, California, USA. METHODS: PWID aged 18 years underwent standardized interviews and serologic testing using an interferon-gamma release assay (IGRA) for LTBI and rapid point-of-care assays for human immunodeficiency virus (HIV) and hepatitis C virus (HCV) infections...
April 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28283492/prevalence-of-latent-tb-infection-and-tb-disease-among-adolescents-in-high-tb-burden-countries-in-africa-a-systematic-review-protocol
#15
Erick Wekesa Bunyasi, Bey-Marrie Schmidt, Leila Hussein Abdullahi, Humphrey Mulenga, Michele Tameris, Angelique Luabeya, Justin Shenje, Thomas Scriba, Hennie Geldenhuys, Robin Wood, Mark Hatherill
INTRODUCTION: Almost a third of the world population has latent tuberculosis (TB) infection (LTBI), ∼10 million of whom develop TB disease annually, despite existence of effective, but lengthy, preventive and curative drug regimens. Although adolescents appear to have a very high force of LTBI, their reported incidence of TB disease is less than that of their corresponding general population. The few available studies on adolescent TB infection and disease prevalence are not sufficient to address the apparent discordance between rates of infection and disease in high TB burden countries in Africa...
March 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28279508/tuberculosis-elimination-and-the-challenge-of-latent-tuberculosis
#16
Alberto Matteelli, Giorgia Sulis, Susanna Capone, Lia D'Ambrosio, Giovanni Battista Migliori, Haileyesus Getahun
Latent tuberculosis infection (LTBI) affects one third to one fourth of the human population and is the reservoir for a significant proportion of emerging active tuberculosis (TB) cases, especially in low incidence countries. The World Health Organization launched in 2015 the END-TB strategy that aims at TB elimination and promotes, for the first time ever, the management of LTBI. The preventive package, basically consisting of testing and treatment for LTBI in groups at high risk of reactivation, is a mainstay of the first pillar of the strategy, alongside prompt diagnosis and early treatment of both drug-susceptible and drug-resistant TB disease...
March 6, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28276801/tuberculosis-infection-and-disease-in-the-2015-cohort-of-unaccompanied-minors-seeking-asylum-in-northern-stockholm-sweden
#17
Rutger Bennet, Margareta Eriksson
BACKGROUND: Minors with a stated age <18 years unaccompanied by a responsible adult form an increasing part of refugees to Europe. They are older than other asylum-seeking children and many come from countries with a high tuberculosis (TB) incidence. During the 2015 refugee crisis, 35,369 of 162,877 refugees (22%) seeking asylum in Sweden were unaccompanied minors, which gave us the opportunity to study their burden of TB infection and disease. METHODS: Of the unaccompanied minors seeking asylum in Sweden during 2015, 2936 (8...
February 19, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28274215/comparing-interferon-gamma-release-assays-with-tuberculin-skin-test-for-identifying-latent-tuberculosis-infection-that-progresses-to-active-tuberculosis-systematic-review-and-meta-analysis
#18
Peter Auguste, Alexander Tsertsvadze, Joshua Pink, Rachel Court, Noel McCarthy, Paul Sutcliffe, Aileen Clarke
BACKGROUND: Timely and accurate identification of people with latent tuberculosis infection (LTBI) is important for controlling Mycobacterium tuberculosis (TB). There is no gold standard for diagnosis of LTBI. Screening tests such as interferon gamma release assays (IGRAs) and tuberculin skin test (TST) provide indirect and imperfect information. This systematic review compared two types of IGRAs QuantiFERON®-TB Gold In-Tube test (QFT-GIT) and T-SPOT.TB with TST for identification of LTBI by predicting progression to a diagnosis of active TB in three subgroups: children, immunocompromised people, and those recently arrived from countries with high TB burden...
March 9, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28256382/agents-of-change-the-role-of-healthcare-workers-in-the-prevention-of-nosocomial-and-occupational-tuberculosis
#19
Ruvandhi R Nathavitharana, Patricia Bond, Angela Dramowski, Koot Kotze, Philip Lederer, Ingrid Oxley, Jurgens A Peters, Chanel Rossouw, Helene-Mari van der Westhuizen, Bart Willems, Tiong Xun Ting, Arne von Delft, Dalene von Delft, Raquel Duarte, Edward Nardell, Alimuddin Zumla
Healthcare workers (HCWs) play a central role in global tuberculosis (TB) elimination efforts but their contributions are undermined by occupational TB. HCWs have higher rates of latent and active TB than the general population due to persistent occupational TB exposure, particularly in settings where there is a high prevalence of undiagnosed TB in healthcare facilities and TB infection control (TB-IC) programmes are absent or poorly implemented. Occupational health programmes in high TB burden settings are often weak or non-existent and thus data that record the extent of the increased risk of occupational TB globally are scarce...
February 27, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28256381/breaking-the-barriers-migrants-and-tuberculosis
#20
Giovanni Sotgiu, Masoud Dara, Rosella Centis, Alberto Matteelli, Ivan Solovic, Christina Gratziou, Adrian Rendon, Giovanni Battista Migliori
Tuberculosis (TB) can represent an important clinical and public health in developing and developed countries. Low- and middle-income countries are facing an epidemic which is difficult to address because of the drug-resistance spread and the association of TB with HIV/AIDS. High-income countries, whose TB incidence has decreased in the last decades, can be involved in new TB epidemic waves owing to social, healthcare, and economic hurdles and challenges. In particular, migrants coming from high TB incidence countries can represent a new epidemiological issue in the TB care and control in geographical areas where primary care and specialized centres are not equipped to face the clinical and public health issues associated with the TB disease...
February 27, 2017: La Presse Médicale
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