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Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology

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https://www.readbyqxmd.com/read/29149633/neonatal-and-long-term-ophthalmological-findings-in-infants-with-symptomatic-and-asymptomatic-congenital-cytomegalovirus-infection
#1
Maria Grazia Capretti, Concetta Marsico, Simonetta Guidelli Guidi, Antonio Ciardella, Giuliana Simonazzi, Silvia Galletti, Liliana Gabrielli, Tiziana Lazzarotto, Giacomo Faldella
BACKGROUND: Congenital cytomegalovirus (cCMV) infection is responsible of a high burden of neurosensory impairment in children. OBJECTIVES: To report incidence and consequences of ophthalmological abnormalities in infants with cCMV infection and better define their long-term ophthalmological management. STUDY DESIGN: Infants with cCMV infection were enrolled in a 6-year follow-up. Infants were classified as symptomatic or asymptomatic based on complete clinical, laboratory and instrumental evaluations...
November 7, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29127947/the-first-external-quality-assessment-of-isolation-and-identification-of-influenza-viruses-in-cell-culture-in-the-asia-pacific-region-2016
#2
Patrick C Reading, Vivian K Leung, Iwona Buettner, Leah Gillespie, Yi-Mo Deng, Robert Shaw, Natalie Spirason, Angela Todd, Aparna Singh Shah, Frank Konings, Ian G Barr
BACKGROUND: The isolation and propagation of influenza viruses from clinical specimens are essential tools for comprehensive virologic surveillance. Influenza viruses must be amplified in cell culture for detailed antigenic analysis and for phenotypic assays assessing susceptibility to antiviral drugs or for other assays. OBJECTIVES: To conduct an external quality assessment (EQA) of proficiency for isolation and identification of influenza viruses using cell culture techniques among National Influenza Centres (NICs) in the World Health Organisation (WHO) South East Asia and Western Pacific Regions...
November 2, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29107766/rotavirus-detection-in-bulk-stool-and-rectal-swab-specimens-in-children-with-acute-gastroenteritis-in-norway
#3
Moustafa Gibory, Ildri Haltbakk, Elmira Flem, Kirsti Vainio, Beatriz Valcarcel Salamanca, Ketil Størdal, Svein Arne Nordbø, Kirsti Jakobsen, Elisebet Haarr, Susanne Gjeruldsen Dudman
BACKGROUND: Bulk stool specimens are traditionally used for rotavirus detection but may be challenging to obtain from young children. Immediate and easy sampling may however be required in different situations, such as outbreak investigation. OBJECTIVES: We assessed the diagnostic performance of rectal swabs compared to bulk stools for the detection of rotavirus by Enzyme Immunoassay (EIA) and multiplex semi-nested reverse transcription PCR (semi-nested RT-PCR) in children recruited through active hospital-based surveillance of acute gastroenteritis in Norway...
November 1, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29100064/outbreak-of-chikungunya-virus-in-a-vulnerable-population-of-sergipe-brazil-a-molecular-and-serological-survey
#4
Marielton Dos Passos Cunha, Cliomar Alves Dos Santos, Daniel Ferreira de Lima Neto, Alessandra Soares Schanoski, Shahab Zaki Pour, Saulo Duarte Passos, Mércia Simone Feitosa de Souza, Danuza Duarte Costa, Paolo Marinho de Andrade Zanotto
BACKGROUND: Chikungunya virus (CHIKV) is a re-emerging arbovirus that is causing outbreaks in several countries of the Americas. The virus was introduced in Brazil in 2014, and since then, several Brazilian states have notified autochthonous cases. OBJECTIVES: Provide additional evidence on a CHIKV outbreak and an outline of the laboratory and clinical profile of symptomatic patients in Sergipe, Brazil. STUDY DESIGN: In February 2016, we collected 142 serum samples from symptomatic patients for arboviruses in Sergipe, Brazil...
October 31, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29100063/spectrum-of-hpv-types-before-and-after-treatment-of-cervical-intraepithelial-neoplasia-grade-2-and-3
#5
Ylva Lindroth, Kaj Bjelkenkrantz, Ola Forslund
BACKGROUND: To monitor residual disease after treatment of high grade cervical intraepithelial neoplasia (CIN), cytology together with human papillomavirus (HPV) testing are commonly performed. OBJECTIVES: To analyse the spectrum of HPV types before and after treatment. STUDY DESIGN: This register-based study included 446 women treated for CIN2 or 3, where cytology samples had been HPV-tested before and after treatment by the use of the MGP-PCR Luminex HPV L1-DNA-assay identifying 39 HPV types, including 12 high risk (HR) HPV types...
October 31, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29096390/epstein-barr-virus-dna-load-kinetics-analysis-in-allogeneic-hematopoietic-stem-cell-transplant-recipients-is-it-of-any-clinical-usefulness
#6
Carlos Solano, Eva María Mateo, Ariadna Pérez, Alberto Talaya, María José Terol, Eliseo Albert, Estela Giménez, Víctor Vinuesa, José Luis Piñana, Juan Carlos Hernández Boluda, David Navarro
BACKGROUND: There is a lack of clinical information regarding the usefulness of plasma Epstein-Barr virus (EBV) DNA load kinetics analyses in the management of EBV infections in allogeneic hematopoietic stem cell transplantation (allo-HSCT) recipients. Namely, it remains unknown whether this type of analysis can help physicians to anticipate the development of high-level EBV DNAemia episodes requiring rituximab treatment or predict the risk of recurrent EBV DNAemia or post-transplant lymphoproliferative disorders (PTLDs)...
October 27, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29096389/detection-and-differentiation-of-hiv-2-using-the-point-of-care-alere-q-hiv-1-2-detect-nucleic-acid-test
#7
Ming Chang, Katrin Steinmetzer, Dana N Raugi, Robert A Smith, Selly Ba, Fatima Sall, Moussa Seydi, Alassane Niang, ElHadji Ibrahima Sall, Ousseynou Cisse, Katja Rödel, Robert W Coombs, Geoffrey S Gottlieb
BACKGROUND: The Alere q HIV-1/2 Detect test (Alere Detect) is a rapid point-of-care (POC) nucleic acid test (NAT) that can detect and differentiate HIV-1 and HIV-2 in 25-μL whole blood or plasma samples. The Alere Detect test has been validated for early infant diagnosis of HIV-1 infection, and it is the only POC NAT device currently known to detect HIV-2, which is endemic in West Africa. OBJECTIVES: To evaluate the sensitivity detecting HIV-2 RNA and the differential performance of the Alere Detect...
October 24, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29080433/hepatitis-c-virus-hcv-rna-screening-and-sequencing-using-dry-plasma-spots
#8
Anna Maria Geretti, Simon King, Kwabena Adjei-Asante, Lambert Tetteh Appiah, Dorcas Ohui Owusu, Fred Stephen Sarfo, David Chadwick, Richard Odame Phillips, Apostolos Beloukas
BACKGROUND: HCV RNA screening of large sample repositories provides data on HCV epidemic patterns that may help guide control policies. In resource-limited settings, shipment of frozen samples to molecular laboratory facilities and testing of individual samples may be prohibitively expensive. OBJECTIVE: Our aim was to detect and sequence HCV RNA in a large HIV-positive cohort from Kumasi, Ghana, using pooled and individual dried plasma spots (DPS) produced from samples stored at -80°C...
October 23, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29078079/persistent-oral-human-papillomavirus-hpv-infection-is-associated-with-low-salivary-levels-of-matrix-metalloproteinase-8-mmp-8
#9
Anna Haukioja, Taina Tervahartiala, Timo Sorsa, Stina Syrjänen
BACKGROUND: A persistent human papillomavirus (HPV) infection is a prerequisite for a HPV related cancer to develop. Asymptomatic, persistent HPV infections are not only found in genital tract, but also on oral mucosa. Oral HPV persistence may be associated with behavioural factors, but data on the role of innate immunity in oral HPV infections are still limited. OBJECTIVES: Salivary concentrations of matrix metalloproteinases MMP-8 and MMP-9, tissue inhibitor of MMPs (TIMP-1), myeloperoxidase, and serum concentrations of MMP-8 were analysed in women with a persistent oral HPV infection and, as a control, in women who remained HPV DNA-negative during a 6-year follow-up...
October 23, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29078077/is-epstein-barr-virus-infection-associated-with-the-pathogenesis-of-microscopic-colitis
#10
Aroldo Gabriele Rizzo, Ambrogio Orlando, Elena Gallo, Andrea Bisanti, Stefania Sferrazza, Luigi Maria Montalbano, Fabio Salvatore Macaluso, Mario Cottone
BACKGROUND: Epstein-Barr virus (EBV) has been associated with inflammation in the colon, particularly in patients with inflammatory bowel disease (IBD). Even if a relevant plasmocytosis, similar to IBD, is present in microscopic colitis (MC), the frequency of EBV infection in this setting is unknown. OBJECTIVES: We aimed to compare the frequency of colonic EBV infection in patients with MC, ulcerative colitis (UC), and irritable bowel syndrome (IBS). STUDY DESIGN: The frequency of colonic EBV infection in biopsies of 30 patients with MC, 30 patients with UC, and 30 controls with IBS was retrospectively assessed...
October 20, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29078078/characterization-of-type-i-interferon-responses-in-dengue-and-severe-dengue-in-children-in-paraguay
#11
Laura B Talarico, Alana B Byrne, Sara Amarilla, Dolores Lovera, Cynthia Vázquez, Gustavo Chamorro, Patricio L Acosta, Adrián Ferretti, Mauricio T Caballero, Antonio Arbo, Fernando P Polack
BACKGROUND: Infection with dengue virus (DENV) produces a wide spectrum of clinical illness ranging from asymptomatic infection to mild febrile illness, and to severe forms of the disease. Type I interferons (IFNs) represent an initial and essential host defense response against viruses. DENV has been reported to trigger a robust type I IFN response; however, IFN-α/β profile in the progression of disease is not well characterized. OBJECTIVES AND STUDY DESIGN: In this context, we conducted a retrospective study assessing the circulating serum levels of type I IFNs and related cytokines at different phases of illness in children during the 2011 outbreak of DENV in Paraguay...
October 18, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29055866/high-diversity-of-human-parechovirus-including-novel-types-in-stool-samples-from-ghanaian-children
#12
Silke Graul, Sindy Böttcher, Daniel Eibach, Ralf Krumkamp, Julia Käsmaier, Yaw Adu-Sarkodie, Jürgen May, Egbert Tannich, Marcus Panning
BACKGROUND: Little is known on human parechovirus (HPeV) infections in Africa. OBJECTIVES: We aimed to determine the prevalence, genetic diversity, and association with diarrhea of HPeV in Ghanaian children. STUDY DESIGN: A total of 682 stool samples from a pediatric case-control study on causes of diarrhea collected in 2007-2008 were used. Laboratory analysis included HPeV real-time RT-PCR and sequencing partial viral protein (VP) 1 gene region of HPeV...
October 18, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29049949/rhinovirus-viremia-in-adult-patients-with-high-viral-load-in-bronchoalveolar-lavages
#13
Anneloes L Van Rijn, Eric C Claas, Peter A von dem Borne, Aloys C M Kroes, Jutte J C de Vries
BACKGROUND: In children, rhinovirus viremia has been associated with higher nasopharyngeal loads and increase in severity of clinical signs and symptoms. OBJECTIVES: This study aims to detect rhinovirus viremia in adult patients and to establish potential correlations with the clinical course. STUDY DESIGN: Adult patients with rhinovirus strongly positive bronchoalveolar lavages (BAL, quantitation cycle, Cq values <25) detected between 2008 and 2014 were studied retrospectively...
October 12, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29035763/optimized-enzyme-linked-immunosorbent-assay-for-detecting-cytomegalovirus-infections-during-clinical-trials-of-recombinant-vaccines
#14
Anke Pagnon, Fabienne Piras, Sophie Gimenez-Fourage, Joseline Dubayle, Nadège Arnaud-Barbe, Catherine Hessler, Catherine Caillet
BACKGROUND: In clinical trials of cytomegalovirus (CMV) glycoprotein B (gB) vaccines, CMV infection is detected by first depleting serum of anti-gB antibodies and then measuring anti-CMV antibodies with a commercially available enzyme-linked immunosorbent assay (ELISA) kit, with confirmation of positive findings by immunoblot. OBJECTIVES: Identification of CMV immunoantigens for the development of an ELISA that detects specifically CMV infection in clinical samples from individuals immunized with gB vaccines...
October 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29035762/high-genetic-variability-of-norovirus-leads-to-diagnostic-test-challenges
#15
Ran Zhuo, Joanne Cho, YuanYuan Qiu, Brendon D Parsons, Bonita E Lee, Linda Chui, Stephen B Freedman, Xiaoli Pang
BACKGROUND: It is important to understand the diagnostic accuracy of multiplex panels such as the Luminex xTAG(®) Gastrointestinal Pathogen Panel (GPP) as they are increasingly employed for routine diagnostics worldwide. Recent evaluations in our laboratory identified lower detection rates of norovirus genogroup II (NoV GII) using GPP compared to our laboratory-developed RT-qPCR, Gastroenteritis Virus Panel (GVP). OBJECTIVES: To characterize the cases of discordant NoV GII results between GPP and GVP and determine the sensitivity of the two assays for specific NoV GII genotypes...
October 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29031156/hiv-misdiagnosis-a-root-cause-analysis-leading-to-improvements-in-hiv-diagnosis-and-patient-care
#16
Raynell Lang, Carmen Charlton, Brenda Beckthold, Kiana Kadivar, Stephanie Lavoie, Debbie Caswell, Paul N Levett, Greg B Horsman, John Kim, M John Gill
BACKGROUND: Standard diagnostic testing for HIV infection has traditionally relied on a high sensitivity HIV antibody screening test using an enzyme-linked immunosorbent assay (ELISA) followed by a high specificity antibody confirmatory test such as a Western Blot. Recently several of the screening assays have been enhanced with an ability to identify p24 antigen thereby narrowing the diagnostic window. OBJECTIVES: To explore the implications of enhanced HIV screening methods that may be leading to HIV misdiagnoses...
October 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29031157/a-european-multi-centre-external-quality-assessment-eqa-study-on-phenotypic-and-genotypic-methods-used-for-herpes-simplex-virus-hsv-drug-resistance-testing
#17
Baharak Afshar, David F Bibby, Renata Piorkowska, Natasha Ohemeng-Kumi, Robert Snoeck, Graciela Andrei, Sarah Gillemot, Florence Morfin, Emilie Frobert, Sonia Burrel, David Boutolleau, Brendan Crowley, Jean L Mbisa
BACKGROUND: Herpes Simplex Virus (HSV) drug resistance is a significant public health concern among immunocompromised individuals. Phenotypic assays are considered the gold standard method for detecting HSV drug resistance. However, plaque reduction assays (PRAs) are technically demanding, often with long turnaround times of up to four weeks. In contrast, genotypic tests can be performed within a few days. OBJECTIVES: The development and coordination of the first European External Quality Assessment (EQA) study to evaluate phenotypic and genotypic methods used for HSV drug resistance testing in specialised reference laboratories...
October 6, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29017084/disseminated-adenovirus-infection-after-allogeneic-stem-cell-transplant-and-the-potential-role-of-brincidofovir-case-series-and-10-year-experience-of-management-in-an-adult-transplant-cohort
#18
Isobel D Ramsay, Charlotte Attwood, Dianne Irish, Paul D Griffiths, Charalampia Kyriakou, David M Lowe
BACKGROUND: Adenovirus infection is a recognized complication following haematopoietic stem cell transplantation. We present a review of our experience of these infections in our transplant cohort over 10 years including 3 patients treated with the novel antiviral brincidofovir. OBJECTIVES: We aimed to describe the presentation, response to treatment and outcomes of adult stem cell transplant patients with disseminated adenovirus infection. STUDY DESIGN: All adult cases of disseminated adenovirus infection following haematopoietic stem cell transplant in our unit between 2005 and 2015 were identified...
October 3, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28992518/comprehensive-detection-of-viruses-in-pediatric-patients-with-acute-liver-failure-using-next-generation-sequencing
#19
Takako Suzuki, Jun-Ichi Kawada, Yusuke Okuno, Satoshi Hayano, Kazuhiro Horiba, Yuka Torii, Yoshiyuki Takahashi, Syuichiro Umetsu, Tsuyoshi Sogo, Ayano Inui, Yoshinori Ito
BACKGROUND: Pediatric acute liver failure (PALF) is a rare and severe syndrome that frequently requires liver transplantation. Viruses are one of the most frequent causes of this disease, however, pathogenic viruses are not determined in many patients. Recently next-generation sequencing (NGS) has been applied to comprehensively detect pathogens of infectious diseases of unknown etiology. OBJECTIVES: To evaluate an NGS-based approach for detecting pathogenic viruses in patients with PALF or acute hepatitis of unknown etiology...
October 3, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28982043/performance-of-rapid-diagnostic-tests-for-the-detection-of-anti-hbs-in-various-patient-populations
#20
Lila Poiteau, Alexandre Soulier, Françoise Roudot-Thoraval, Christophe Hézode, Dominique Challine, Jean-Michel Pawlotsky, Stéphane Chevaliez
BACKGROUND: Rapid diagnostic tests (RDTs) represent an attractive alternative method to conventional diagnosis of hepatitis B virus (HBV) infection. OBJECTIVE: The aim of the present study was to evaluate the diagnostic performance of commercially available RDTs for the detection of anti-HBs in various patient populations. STUDY DESIGN: A total of 347 individuals, 198 positive and 149 negative for anti-HBs, were studied. RESULTS: The specificity of RDT detection of anti-HBs in serum was 98...
September 28, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
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