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Childhood TB

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https://www.readbyqxmd.com/read/28410697/multifocal-pure-tubercular-osteomyelitis-an-unusual-presentation-in-childhood
#1
Sananda Pati, Sangita De, Tarak Nath Ghosh, Mrinal Kanti Ghosh
Tuberculosis is a major health problem in the developing world. One-third of children infected with Mycobacterium tuberculosis have extra pulmonary involvement. Skeletal tuberculosis occurs in 1-6% of them with vertebra being the commonest site. Pure tubercular osteomyelitis without joint involvement occurs in only 2-3% cases of osteoarticular tuberculosis. Common sites are femur, tibia, and fibula. Disseminated skeletal involvement is very rare in children (7%) and calvarial osteomyelitis is even rarer (1%)...
April 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28399975/survey-of-health-care-worker-knowledge-about-childhood-tuberculosis-in-high-burden-centers-in-botswana
#2
T Arscott-Mills, L Masole, R Ncube, A P Steenhoff
BACKGROUND: Quantifying health care workers' (HCWs') knowledge about tuberculosis (TB) informs educational interventions. We assessed HCWs' knowledge about childhood TB in Botswana. METHODS: Semi-structured interviews were conducted with HCWs at 46 sites around Botswana using a piloted instrument. Transcripts were double-coded using a coding schema. Discrepancies were resolved by consensus and a systematic thematic analysis was performed. RESULTS: The sites (42 clinics and 4 hospitals) were urban (n = 9, 20%), semi-urban (n = 10, 22%) and rural (n = 27, 58%)...
May 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28359325/early-versus-late-bcg-vaccination-in-hiv-1-exposed-infants-in-uganda-study-protocol-for-a-randomized-controlled-trial
#3
Victoria Nankabirwa, James K Tumwine, Olive Namugga, Thorkild Tylleskär, Grace Ndeezi, Bjarne Robberstad, Mihai G Netea, Halvor Sommerfelt
BACKGROUND: Bacillus Calmette-Guérin (BCG) vaccination may have nonspecific effects, i.e., effects on childhood morbidity and mortality that go beyond its effect on the risk of childhood tuberculosis (TB). Though the available scientific literature is mostly from observational studies, and is fraught with controversy, BCG vaccination at birth may protect infants in high-mortality populations against serious infections other than TB. Yet, other studies indicate that giving BCG later in infancy may modify immune responses to non-TB antigens and potentially enhance immunity, potentially also against tuberculosis (TB)...
March 31, 2017: Trials
https://www.readbyqxmd.com/read/28333284/revisiting-the-mutant-prevention-concentration-to-guide-dosing-in-childhood-tuberculosis
#4
Devan Jaganath, H Simon Schaaf, Peter R Donald
The mutant prevention concentration (MPC) is a well-known concept in the chemotherapy of many bacterial infections, but is seldom considered in relation to tuberculosis (TB) treatment, as the required concentrations are generally viewed as unachievable without undue toxicity. Early studies revealed single mutations conferring high MICs of first- and second-line anti-TB agents; however, the growing application of genomics and quantitative drug susceptibility testing in TB suggests a wide range of MICs often determined by specific mutations and strain type...
March 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28331043/world-health-organization-treatment-guidelines-for-drug-resistant-tuberculosis-2016-update
#5
Dennis Falzon, Holger J Schünemann, Elizabeth Harausz, Licé González-Angulo, Christian Lienhardt, Ernesto Jaramillo, Karin Weyer
Antimicrobial resistance is a major global concern. Tuberculosis (TB) strains resistant to rifampicin and other TB medicines challenge patient survival and public health. The World Health Organization (WHO) has published treatment guidelines for drug-resistant TB since 1997 and last updated them in 2016 based on reviews of aggregated and individual patient data from published and unpublished studies. An international expert panel formulated recommendations following the GRADE approach. The new WHO guidelines recommend a standardised 9-12 months shorter treatment regimen as first choice in patients with multidrug- or rifampicin-resistant TB (MDR/RR-TB) strains not resistant to fluoroquinolones or second-line injectable agents; resistance to these two classes of core second-line medicines is rapidly detectable with molecular diagnostics also approved by WHO in 2016...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28326606/physical-activity-sedentary-time-and-bone-strength-from-childhood-to-early-adulthood-a-mixed-longitudinal-hr-pqct-study
#6
Leigh Gabel, Heather M Macdonald, Lindsay Nettlefold, Heather A McKay
Bone strength is influenced by bone geometry, density, and bone microarchitecture, which adapt to increased mechanical loads during growth. Physical activity (PA) is essential for optimal bone strength accrual; however, less is known about how sedentary time influences bone strength and its determinants. Thus, our aim was to investigate the prospective associations between PA, sedentary time, and bone strength and its determinants during adolescence. We used HR-pQCT at distal tibia (8% site) and radius (7% site) in 173 girls and 136 boys (aged 9 to 20 years at baseline)...
March 22, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28319817/indoor-air-quality-of-low-and-middle-income-urban-households-in-durban-south-africa
#7
Nkosana Jafta, Lars Barregard, Prakash M Jeena, Rajen N Naidoo
INTRODUCTION: Elevated levels of indoor air pollutants may cause cardiopulmonary disease such as lower respiratory infection, chronic obstructive lung disease and lung cancer, but the association with tuberculosis (TB) is unclear. So far the risk estimates of TB infection or/and disease due to indoor air pollution (IAP) exposure are based on self-reported exposures rather than direct measurements of IAP, and these exposures have not been validated. OBJECTIVE: The aim of this paper was to characterize and develop predictive models for concentrations of three air pollutants (PM10, NO2 and SO2) in homes of children participating in a childhood TB study...
March 15, 2017: Environmental Research
https://www.readbyqxmd.com/read/28264670/examining-the-quality-of-childhood-tuberculosis-diagnosis-in-cambodia-a-cross-sectional-study
#8
Julia B Frieze, Rajendra-Prasad Yadav, Khann Sokhan, Song Ngak, Team Bak Khim
BACKGROUND: Cambodia is one of the 22 countries with the highest TB burden. While childhood TB is estimated to make up 10-20% of total TB cases in high-burden settings, this proportion ranges from 1.3 to 39.4% throughout Cambodia's provinces, suggesting potential under- and over-diagnosis of childhood TB, subnationally. The proportion of case notifications classified as extrapulmonary TB out of total TB case notifications in children is 87%, greatly exceeding the expected global range of 20-30%...
March 6, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28250686/prevalence-of-tuberculosis-among-children-in-north-sudan-are-we-only-seeing-the-tip-of-the-iceberg
#9
Wadie M Elmadhooun, Elmuntasir Taha Salah, Sufian K Noor, Sarra O Bushara, Ekhlas O Ahmed, Hamdan Mustafa, Amel A Sulaiman, Mohamed H Ahmed
INTRODUCTION: Tuberculosis (TB) is a significant cause of morbidity and mortality among children. The vague symptoms, the uncertain diagnostic tests and lack of adequate awareness among families all contributed in masking the actual prevalence of the disease. The objective of this study was to describe the epidemiology of childhood TB in River Nile State (RNS), North Sudan. METHODS: All registered cases of TB aged 15 years and below, at the 13 management units in RNS during 3 years, 2011-2013 were included...
January 2017: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/28166728/why-being-an-expert-despite-xpert-remains-crucial-for-children-in-high-tb-burden-settings
#10
Jason M Bacha, Katherine Ngo, Petra Clowes, Heather R Draper, Elias N Ntinginya, Andrew DiNardo, Chacha Mangu, Issa Sabi, Bariki Mtafya, Anna M Mandalakas
BACKGROUND: As access to Xpert expands in high TB-burden settings, its performance against clinically diagnosed TB as a reference standard provides important insight as the majority of childhood TB is bacteriologically unconfirmed. We aim to describe the characteristics and outcomes of children with presumptive TB and TB disease, and assess performance of Xpert under programmatic conditions against a clinical diagnosis of TB as a reference standard. METHODS: Retrospective review of children evaluated for presumptive TB in Mbeya, Tanzania...
February 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28129755/improving-case-detection-of-tuberculosis-among-children-in-bangladesh-lessons-learned-through-an-implementation-research
#11
Ziaul Islam, Kazi Istiaque Sanin, Tahmeed Ahmed
BACKGROUND: According to the Bangladesh National Tuberculosis Control Program (NTP), the proportion of childhood tuberculosis (TB) among all reported cases is only 3%. This is considerably lower compared to other high-burden countries. One of our previous studies identified substantial gaps at the primary care level related to capacity of service providers, supply of required logistics and community awareness about childhood TB. Therefore, we conducted an implementation study with the objectives to address those gaps...
January 28, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28107473/butimba-intensifying-the-hunt-for-child-tb-in-swaziland-through-household-contact-tracing
#12
Anna Maria Mandalakas, Katherine Ngo, Pilar Alonso Ustero, Rachel Golin, Florence Anabwani, Bulisile Mzileni, Welile Sikhondze, Robert Stevens
BACKGROUND: Limited data exists to inform contact tracing guidelines in children and HIV-affected populations. We evaluated the yield and additionality of household contact and source case investigations in Swaziland, a TB/HIV high-burden setting, while prioritizing identification of childhood TB. METHODS: In partnership with 7 local TB clinics, we implemented standardized contact tracing of index cases (IC) receiving TB treatment. Prioritizing child contacts and HIV-affected households, screening officers screened contacts for TB symptoms and to identify risk factors associated with TB...
2017: PloS One
https://www.readbyqxmd.com/read/28043630/effective-testing-for-pulmonary-tuberculosis-using-xpert-mtb-rif-assay-for-stool-specimens-in-immunocompetent-pakistani-children
#13
Zahra Hasan, Fehmina Arif, Sadia Shakoor, Aisha Mehnaz, Alnoor Akber, Akbar Kanji, Mussarat Ashraf, Rumina Hasan
OBJECTIVE/BACKGROUND: Childhood tuberculosis (TB) is largely a paucibacillary disease and difficult to diagnose. It is difficult to obtain a sputum or gastric aspirate (GA) sample, and patients are often undiagnosed and treated empirically. Stool is a noninvasive specimen not usually used for TB testing in Pakistan. We investigated the value of Xpert MTB/RIF to diagnose Mycobacterium tuberculosis (MTB) in children with pulmonary TB cases, by performing comparative testing of GA and stool samples...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043600/benefits-and-challenges-of-molecular-diagnostics-for-childhood-tuberculosis
#14
Cristina Gutierrez
Expanding tuberculosis (TB)-diagnostic services, including access to rapid tests, is a World Health Organization (WHO) strategy to accelerate progress toward ending TB. Faster and more sensitive molecular tests capable of diagnosing TB and drug-resistant TB have the technical capacity to address limitations associated with smears and cultures by increasing accuracy and shortening turnaround times as compared with those of these conventional laboratory methods. Nucleic acid amplification assays used to detect and analyze Mycobacterium tuberculosis (MTB)-complex nucleic acids can be used directly on specimens from patients suspected of having TB...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043529/relation-between-smear-positivity-and-imaging-findings-in-children-with-pulmonary-tuberculosis
#15
Maryam Hassanzad, Mohammad Reza Bolursaz, Payam Mehrian, Farahnaz Aghahosseini, Ali Akbar Velayati
OBJECTIVE/BACKGROUND: We investigated the relationship between high-resolution computed tomography (HRCT) imaging manifestation of tuberculosis (TB) in childhood and the results of sputum smear. The aim of this study was to identify an alternative indicator of infectivity to prevent disease transmission through special isolation methods in children who have a clinical condition that suggests TB. METHODS: This retrospective comparative study was performed on 95 children under the age of 15years with a diagnosis of TB based on World Health Organization criteria and laboratory data (smear and culture positive for Mycobacterium tuberculosis)...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043528/childhood-tuberculosis-in-qatar
#16
Jay P N Singh, Reem Mohammed, Thanveer Thayyullathil, Abdullatif Al-Khal, Zubaida Al-Suwaidi
Childhood tuberculosis (TB) has been long neglected but has gained attention in recent years. In 2012, the World Health Organization annual report included an estimate for childhood TB for the first time, and in the following year, the TB Alliance received a grant from UNITAID (International Drug Purchase Facility) to develop pediatric TB formulations. Qatar is a low-incidence country. In this observational study, laboratory-confirmed cases of TB were analyzed from 2013 to 2015 and included patients aged ⩽14years...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28003956/global-burden-of-childhood-tuberculosis
#17
Helen E Jenkins
In 2015, the World Health Organization (WHO) declared tuberculosis (TB) to be responsible for more deaths than any other single infectious disease. The burden of TB among children has frequently been dismissed as relatively low with resulting deaths contributing very little to global under-five all-cause mortality, although without rigorous estimates of these statistics, the burden of childhood TB was, in reality, unknown. Recent work in the area has resulted in a WHO estimate of 1 million new cases of childhood TB in 2014 resulting in 136,000 deaths...
2016: Pneumonia
https://www.readbyqxmd.com/read/28003904/a-case-of-deep-vein-thrombosis-and-intracranial-sinus-thrombosis-possible-rare-complications-of-childhood-abdominal-tuberculosis
#18
Geeta Gathwala, Poonam Dalal, Virender Gehlawat, Jasbir Singh, Vandana Arya
Severe pulmonary tuberculosis (TB) complicated by deep vein thrombosis (DVT) in adults has been reported previously in the medical literature; however, childhood extrapulmonary TB complicated by DVT is rare. We report a 13-year-old girl who presented to the Department of Pediatrics at the Postgraduate Institute of Medical Sciences in Rohtak, India, in 2012 with abdominal TB complicated by DVT and intracranial sinus thrombosis. She was treated with a course of four antitubercular drugs and short-term anticoagulation therapy with a positive outcome over the next six months...
November 2016: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/27931215/why-the-convention-on-the-rights-of-the-child-must-become-a-guiding-framework-for-the-realization-of-the-rights-of-children-affected-by-tuberculosis
#19
Robindra Basu Roy, Nicola Brandt, Nicolette Moodie, Mitra Motlagh, Kumanan Rasanathan, James A Seddon, Anne K Detjen, Beate Kampmann
BACKGROUND: Until recently, paediatric tuberculosis (TB) has been relatively neglected by the broader TB and the maternal and child health communities. Human rights-based approaches to children affected by TB could be powerful; however, awareness and application of such strategies is not widespread. DISCUSSION: We summarize the current challenges faced by children affected by TB, including: consideration of their family context; the limitations of preventive, diagnostic and treatment options; paucity of paediatric-specific research; failure in implementation of interventions; and stigma...
December 8, 2016: BMC International Health and Human Rights
https://www.readbyqxmd.com/read/27865396/mycobacterium-smegmatis-proteoliposome-induce-protection-in-a-murine-progressive-pulmonary-tuberculosis-model
#20
Yanely Tirado, Alina Puig, Nadine Alvarez, Reinier Borrero, Alicia Aguilar, Frank Camacho, Fatima Reyes, Sonsire Fernandez, Jose Luis Perez, Reynaldo Acevedo, Dulce Mata Espinoza, Jorge Alberto Barrios Payan, Maria de Los A Garcia, Ramlah Kadir, María E Sarmiento, Rogelio Hernandez-Pando, Mohd-Nor Norazmi, Armando Acosta
Tuberculosis (TB) remains an important cause of mortality and morbidity. The TB vaccine, BCG, is not fully protective against the adult form of the disease and is unable to prevent its transmission although it is still useful against severe childhood TB. Hence, the search for new vaccines is of great interest. In a previous study, we have shown that proteoliposomes obtained from Mycobacterium smegmatis (PLMs) induced cross reactive humoral and cellular response against Mycobacterium tuberculosis (Mtb) antigens...
December 2016: Tuberculosis
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