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https://www.readbyqxmd.com/read/28639703/an-assessment-of-differences-in-costs-and-health-benefits-of-serology-and-nat-screening-of-donations-for-blood-transfusion-in-different-western-countries
#1
M P Janssen, M van Hulst, B Custer
BACKGROUND AND OBJECTIVES: The cost-utility of safety interventions is becoming increasingly important as a driver of implementation decisions. The aim of this study was to compare the cost-utility of different blood screening strategies in various settings, and to analyse the extent and cause of differences in health economic results. MATERIALS AND METHODS: For eight Western countries (Australia, Canada, Denmark, Finland, France, The Netherlands, UK and the United States of America), data were collected on donor and recipient populations, blood products, screening tests, and on patient treatment practices and costs...
June 22, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28639699/an-evaluation-of-asymptomatic-dengue-infections-among-blood-donors-during-the-2014-dengue-outbreak-in-guangzhou-china
#2
Qiao Liao, Zhengang Shan, Min Wang, Jieting Huang, Ru Xu, Ke Huang, Xi Tang, Weiyun Zhang, Kenrad Nelson, Chengyao Li, Yongshui Fu, Xia Rong
In 2014, an outbreak of dengue virus (DENV) infection led to 45171clinical cases diagnosed in Guangdong province, southern China. However, the potential risk of blood donors asymptomatically infected with DENV has not been evaluated. In the current study we detected anti-DENV IgG antibody and RNA in volunteer Chinese blood donors. We found that anti-DENV IgG antibody was positively detected in 3.4% (51/1500) and two donors were detected as being DENV RNA positive out of 3000 blood samples. We concluded that the presence of potential DENV in blood donors might be potential risk for blood safety...
June 22, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28632511/zika-virus-a-cause-of-concern-in-transplantation
#3
Marilyn E Levi
PURPOSE OF REVIEW: Worldwide, the number of countries reporting Zika virus (ZKV) infection continues to increase. Although 80% of cases are asymptomatic, ZKV has been identified as a neurotropic virus associated with congenital microcephaly, Guillain-Barre' syndrome, and meningoencephalitis. Until recently, infection in transplant recipients has not been identified. This study will review the existing literature on ZKV infection, laboratory testing, and management in transplant recipients...
June 16, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28632434/screening-for-celiac-disease-by-endomysial-antibodies-in-patients-with-unexplained-hypertransaminasaemia
#4
Mariam Ghozzi, Mohamed Ali Ben Salem, Fatma Mbarki, Ali Jmaa, Azza Baccouch, Nabil Sakly, Elhem Ben Jazia, Ibtissem Ghedira
OBJECTIVE: To do a serological screening for celiac disease in patients with unexplained liver cytolysis. MATERIALS AND METHODS: Fifty-six patients with liver cytolysis without known aetiology were studied. Endomysial antibodies were determined by indirect immunofluorescence on human umbilical cord. Two thousand and five hundred blood donors served as control group. For statistical analysis, we used Chi-square or Fisher's exact test. RESULTS: The frequency of IgA endomysial antibodies in our patients was significantly higher than in the control group (8...
June 20, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28627820/performance-of-the-liaison%C3%A2-xl-murex-rechtlv-i-ii-immunoassay-in-the-detection-of-htlv-1-2-antibodies-in-serum
#5
Pierre Gantner, Aurelie Velay, Nicolas Guigue, Heidi Barth, Marie-Josee Wendling, Constance Delaugerre, Samira Fafi-Kremer
BACKGROUND: Human T-cell lymphotropic virus type 1 and 2 (HTLV-1/2) immunoassays are used for blood screen- ing from blood products, milk, and organ donors. METHODS: We assessed the performance of the DiaSorin Liaison® XL murex recHTLV-I/II immunoassay relative to the Abbott Architect® rHTLV-I/II immunoassay and with the Innogenetics immunoblot as confirmation. RESULTS: A panel of HTLV positive (n = 66) and negative (n = 30) sera was tested in both techniques within the same freeze/thaw cycle...
May 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28623087/highly-multiplex-real-time-pcr-based-screening-for-blood-borne-pathogens-on-an-openarray-platform
#6
Elena Grigorenko, Carolyn Fisher, Sunali Patel, Valerie Winkelman, Phillip Williamson, Caren Chancey, Germán Añez, Maria Rios, Victoria Majam, Sanjai Kumar, Robert Duncan
Molecular diagnostics are increasingly used in the blood bank industry. A device that can combine simultaneous detection of multiple targets with the flexibility of inclusion of emerging pathogens is desirable for testing blood products. A highly multiplexed blood-borne pathogen panel (BBPP) using dual-label probe chemistry (TaqMan assays) was developed for simultaneous detection and discrimination of 17 viral pathogens in human plasma samples and 13 bacterial and protozoan pathogens in human blood samples on the OpenArray platform...
June 12, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28617169/the-frequency-and-associated-factors-for-bk-virus-infection-in-a-center-performing-mainly-living-kidney-transplantations
#7
Selma Alagoz, Mert Kuskucu, Sibel Gulcicek, Serkan Feyyaz Yalin, Meric Oruc, Kenan Midilli, Erkan Yılmaz, Mehmet Riza Altiparmak, Nurhan Seyahi
PURPOSE: BK virus (BKV) nephropathy has increasingly become an important cause of morbidity in renal transplant recipients. We evaluated the frequency and associated factors for BKV infection in a center performing mainly living donor transplantations over a long time period. METHODS: One hundred consecutive renal transplant patients were included. Quarterly visits were planned to examine urine for decoy cells and to measure the BKV DNA in the blood and urine. Renal biopsy was performed in case of deteriorated allograft function...
June 2017: Progress in Transplantation
https://www.readbyqxmd.com/read/28612350/blood-donor-borrelia-burgdorferi-sensu-lato-seroprevalence-and-history-of-tick-bites-at-a-northern-limit-of-the-vector-distribution
#8
Dag Hvidsten, Liisa Mortensen, Bjørn Straume, Mirjana Grujic Arsenovic, Anne-Berit Pedersen, Gro Lyngås, Jeremy S Gray, Nils Grude
In order to study the antibody seroprevalence of the causal agent of Lyme borreliosis, Borrelia burgdorferi sensu lato (s.l.), and the history of tick bites at a geographical distribution limit of Ixodes ricinus, we compared healthy blood donors in geographically extreme regions: the borreliosis-endemic Vestfold County (59°N) and the region of northern Norway. Blood samples were screened using IgG/VlsE ELISA, and positive/borderline samples were confirmed using C6 ELISA and immunoblot assays. Also, donors completed a questionnaire consisting of several items including the places they have lived, and whether they owned any pets...
June 14, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28607116/elimination-of-babesia-microti-is-dependent-on-intraerythrocytic-killing-and-cd4-t-cells
#9
Sini Skariah, Paul Arnaboldi, Raymond J Dattwyler, Ali A Sultan, Corey Gaylets, Odaelys Walwyn, Hannah Mulhall, Xia Wu, Soha R Dargham, Dana G Mordue
Babesiosis is a tick-borne zoonosis caused by protozoans of the genus Babesia, apicomplexan parasites that replicate within erythrocytes. However, unlike related Plasmodium species, the pathogenesis of Babesia infection remains poorly understood. The primary etiological agent of babesiosis in the United States is B. microti. In healthy individuals, tick-transmitted infection with Babesia causes no specific clinical manifestations, with many having no symptoms at all. However, even in asymptomatic people, a Babesia carriage state can be established that can last up to a year or more...
June 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28607051/computationally-optimized-deimmunization-libraries-yield-highly-mutated-enzymes-with-low-immunogenicity-and-enhanced-activity
#10
Regina S Salvat, Deeptak Verma, Andrew S Parker, Jack R Kirsch, Seth A Brooks, Chris Bailey-Kellogg, Karl E Griswold
Therapeutic proteins of wide-ranging function hold great promise for treating disease, but immune surveillance of these macromolecules can drive an antidrug immune response that compromises efficacy and even undermines safety. To eliminate widespread T-cell epitopes in any biotherapeutic and thereby mitigate this key source of detrimental immune recognition, we developed a Pareto optimal deimmunization library design algorithm that optimizes protein libraries to account for the simultaneous effects of combinations of mutations on both molecular function and epitope content...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28599678/the-prevalence-of-dengue-virus-serotypes-in-asymptomatic-blood-donors-reveals-the-emergence-of-serotype-4-in-saudi-arabia
#11
Ahmed Mohamed Ashshi
BACKGROUND: Transmission of dengue virus (DENV) through blood transfusion has been documented and hence screening for DENV during blood donation has been recently recommended by the American Association of Blood Banks and Centres of Disease Control and Prevention. DENV is endemic in the Western province of the Kingdom of Saudi Arabia (KSA) and serotypes 1, 2 and 3, but not 4, have been detected. However, little is known regarding the rates of DENV during blood donation in the kingdom...
June 9, 2017: Virology Journal
https://www.readbyqxmd.com/read/28597489/development-of-a-web-based-application-and-multicountry-analysis-framework-for-assessing-interdicted-infections-and-cost-utility-of-screening-donated-blood-for-hiv-hcv-and-hbv
#12
B Custer, M P Janssen, G Hubben, M Vermeulen, M van Hulst
BACKGROUND AND OBJECTIVES: Most countries test donations for HIV, HCV and HBV using serology with or without nucleic acid testing (NAT). Cost-utility analyses provide information on the relative value of different screening options. The aim of this project was to develop an open access risk assessment and cost-utility analysis web-tool for assessing HIV, HCV and HBV screening options (http://www.isbtweb.org/working-parties/transfusion-transmitted-infectious-diseases/). An analysis for six countries (Brazil, Ghana, the Netherlands, South Africa, Thailand and USA) was conducted...
June 8, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28596425/outcomes-of-hematopoietic-cell-transplantation-using-donors-or-recipients-with-inherited-chromosomally-integrated-hhv-6
#13
Joshua A Hill, Amalia S Magaret, Ruth Hall-Sedlak, Anna Mikhaylova, Meei-Li Huang, Brenda M Sandmaier, John A Hansen, Keith R Jerome, Danielle M Zerr, Michael Boeckh
Human herpesvirus 6 (HHV-6) species have a unique ability to integrate into chromosomal telomeres. Mendelian inheritance via gametocyte integration results in HHV-6 in every nucleated cell. The epidemiology and clinical impact of inherited chromosomally integrated (iciHHV-6) in hematopoietic cell transplant (HCT) recipients is unclear. We identified 4,319 HCT donor-recipient pairs (8,638 subjects) who received an allogeneic HCT and had archived pre-HCT peripheral blood mononuclear cell samples. We screened these samples for iciHHV-6 and compared characteristics of HCT recipients and donors with iciHHV-6 to recipients and donors without iciHHV-6, respectively...
June 8, 2017: Blood
https://www.readbyqxmd.com/read/28591470/cost-projections-for-implementation-of-safety-interventions-to-prevent-transfusion-transmitted-zika-virus-infection-in-the-united-states
#14
Katherine D Ellingson, Mathew R P Sapiano, Kathryn A Haass, Alexandra A Savinkina, Misha L Baker, Richard A Henry, James J Berger, Matthew J Kuehnert, Sridhar V Basavaraju
BACKGROUND: In August 2016, the Food and Drug Administration advised US blood centers to screen all whole blood and apheresis donations for Zika virus (ZIKV) with an individual-donor nucleic acid test (ID-NAT) or to use approved pathogen reduction technology (PRT). The cost of implementing this guidance nationally has not been assessed. STUDY DESIGN AND METHODS: Scenarios were constructed to characterize approaches to ZIKV screening, including universal ID-NAT, risk-based seasonal allowance of minipool (MP) NAT by state, and universal MP-NAT...
June 2017: Transfusion
https://www.readbyqxmd.com/read/28589643/residual-risk-of-transmission-of-human-immunodeficiency-virus-and-hepatitis-c-virus-infections-by-blood-transfusion-in-northern-brazil
#15
Priscilla Cristina Moura Vieira, Letícia Martins Lamarão, Carlos Eduardo de Melo Amaral, Angelita Silva de Miranda Corrêa, Maria Salete Maciel de Lima, Katarine Antônia Dos Santos Barile, Karine Lisboa Damasceno de Almeida, Vinicius de Albuquerque Sortica, André Salim Kayath, Rommel Mario Rodríguez Burbano
BACKGROUND: Nucleic acid test (NAT) blood screening for human immunodeficiency virus (HIV) and hepatitis C virus (HCV) was introduced in northern Brazil in July 2012. There are several Brazilian articles that have evaluated transfusion transmission risks for HIV and HCV. However, to our knowledge, this article is the first to evaluate the impact of HIV and HCV NAT implementation for blood screening in northern Brazil. The aim of this study was to determine the prevalence and incidence rates of HIV and HCV among blood donors and to compare the residual risk of transfusion transmission of these infections, before (2009-2011) and after (2012-2014) NAT implementation...
June 7, 2017: Transfusion
https://www.readbyqxmd.com/read/28584455/hepatitis-c-virus-unnoticed-and-on-the-rise-in-blood-donor-screening-a-5-years-cross-sectional-study-on-seroprevalence-in-voluntary-blood-donors-from-central-india
#16
Purti Agrawal Saini, Preeti Rihal Chakrabarti, Amit V Varma, Shankhini Gambhir, Gargi Tignath, Priyanka Gupta
CONTEXT: The ultimate goal of a blood transfusion service is the provision of safe and adequate supply free from transfusion-transmitted infections (TTIs). TTIs not only threaten the recipient's safety, but they also increase disease burden. Seroprevalence of TTIs in healthy blood donors indirectly reflects the prevalence of these infections in the general healthy population. AIM AND OBJECTIVES: To study the seroprevalence of human immunodeficiency virus (HIV), hepatitis B virus (HBV), and hepatitis C virus (HCV) in healthy donors at a tertiary care hospital-based blood bank...
April 2017: Journal of Global Infectious Diseases
https://www.readbyqxmd.com/read/28582431/hepatitis-b-genotypes-and-surface-antigen-mutants-present-in-pakistani-blood-donors
#17
Barbara J Harris, Vera Holzmayer, Huma Qureshi, Mohammad Ayyub Khan, Saleem Ahmed Khan, Nuzhat Salamat, Sarfaraz Jafri, Catherine A Brennan
BACKGROUND: The prevalence of chronic Hepatitis B Virus (HBV) infection is 2-4% in the Pakistani population, defining Pakistan as an intermediate prevalence country. In this study, hepatitis B surface antigen (HBsAg) reactive blood donations were screened using a combination of serological and molecular methods to identify immune escape HBV mutant strains and to determine the HBV genotypes and subtypes present in Pakistan. METHODS: Blood donations were collected at the Armed Forces Institute of Transfusion (AFIT) located in northern Pakistan and the Hussaini Blood Bank (HBB) located in the south...
2017: PloS One
https://www.readbyqxmd.com/read/28571144/seroprevalence-and-trends-of-transfusion-transmissible-infections-in-blood-donors-in-andaman-and-nicobar-islands-an-institutional-retrospective-study
#18
Sahil Sehgal, P S Shaiji, Rupinder Kaur Brar
INTRODUCTION: Transfusion Transmissible Infections (TTIs) such as Human Immunodeficiency Virus (HIV), Hepatitis B virus (HBV), Hepatitis C Virus (HCV) and syphilis pose a threat to blood safety in a developing country like India. AIM: To determine the prevalence of TTIs among healthy donors in Andaman and Nicobar Islands, India, and to further help in determination of the population subset to be focused on for enhancing blood donor pool. MATERIALS AND METHODS: This retrospective cross-sectional study was conducted on all voluntary and replacement donors in a tertiary health care centre in Andaman and Nicobar Islands for a period of three years...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28567194/prevalence-of-antibody-to-hepatitis-b-core-antigen-among-hepatitis-b-surface-antigen-negative-blood-donors-in-ilorin-nigeria-a-cross-sectional-study
#19
Mutiat K Ogunfemi, Hannah O Olawumi, Abdulfatai B Olokoba, Modu B Kagu, Sikiru A Biliaminu, Kabir A Durowade, Idayat A Durotoye, Akeem O Shittu
BACKGROUND: Post-transfusion hepatitis occurs even with stringent donor selection criteria and screening for hepatitis B surface antigen (HBsAg). The objective of this study was to determine the prevalence of antibody to hepatitis B core antigen (anti-HBc) in HBsAg-negative blood donors. METHODS: This was a cross-sectional study in which 200 HBsAg-negative blood donors were recruited. Screening for viral markers was done using both a rapid test kit and enzyme-linked immunosorbent assay (ELISA) for anti-HBc IgM...
March 2017: Malawi Medical Journal: the Journal of Medical Association of Malawi
https://www.readbyqxmd.com/read/28555775/what-weighs-more-low-compliance-with-self-deferral-or-minor-medical-procedures-explaining-the-high-rate-of-hepatitis-c-virus-window-period-donations-in-poland
#20
Michal Czerwinski, Piotr Grabarczyk, Malgorzata Stepien, Dorota Kubicka-Russel, Katarzyna Tkaczuk, Ewa Brojer, Magdalena Rosinska
BACKGROUND: Since the introduction of nucleic acid testing (NAT) for routine blood donor screening, hepatitis C virus (HCV) RNA-only detection rates reported from Poland have been higher than in most other European countries. STUDY DESIGN AND METHODS: To examine factors that likely contribute to these window-period donations, we conducted a case-control study among 47 recently HCV-infected blood donors (cases), who gave blood between July 2002 and June 2014, and 141 controls matched by age, sex, and donation dates...
May 28, 2017: Transfusion
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