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https://www.readbyqxmd.com/read/29031164/productive-replication-of-avian-influenza-viruses-in-chicken-endothelial-cells-is-determined-by-hemagglutinin-cleavability-and-is-related-to-innate-immune-escape
#1
Adrien Lion, Mathilde Richard, Evelyne Esnault, Emmanuel Kut, Denis Soubieux, Vanaïque Guillory, Mélody Germond, Caroline Blondeau, Rodrigo Guabiraba, Kirsty R Short, Daniel Marc, Pascale Quéré, Sascha Trapp
Endotheliotropism is a hallmark of gallinaceous poultry infections with highly pathogenic avian influenza (HPAI) viruses and a feature that distinguishes HPAI from low pathogenic avian influenza (LPAI) viruses. Here, we used chicken aortic endothelial cells (chAEC) as a novel in vitro infection model to assess the susceptibility, permissiveness, and host response of chicken endothelial cells (EC) to infections with avian influenza (AI) viruses. Our data show that productive replication of AI viruses in chAEC is critically determined by hemagglutinin cleavability, and is thus an exclusive trait of HPAI viruses...
October 11, 2017: Virology
https://www.readbyqxmd.com/read/29030070/a-latex-agglutination-assay-to-quantify-the-amount-of-hemagglutinin-protein-in-adjuvanted-low-dose-influenza-monovalent-vaccines
#2
Sophie Buffin, Nabila Ikhelef, Julien Prudent, Joseline Dubayle, Nolwenn Nougarede, Marie-Pierre Varenne, Catherine Moste, Isabelle Legastelois
To formulate inactivated influenza vaccines, the concentration of hemagglutinin (HA) must be accurately determined. The standard test currently used to measure HA in influenza vaccines is the Single Radial Immunodiffusion (SRID) assay. We developed a very rapid, simple and sensitive alternative quantitative HA assay, namely the Latex Agglutination Assay (LAA). The LAA uses the Spherotest(®) technology, which is based on the agglutination of HA-specific immunoglobulin-coated latex beads. The amount of HA in a sample is calculated from the level of bead agglutination by a simple absorbance measurement at 405nm against a standard curve generated using a monovalent vaccine standard...
October 10, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/29029303/clinical-usage-of-the-candidate-adjuvanted-hz-su-zoster-vaccine-re-vaccination-of-recipients-of-live-attenuated-zoster-vaccine-and-co-administration-with-a-seasonal-influenza-vaccine
#3
Michael N Oxman, Ruth Harbecke, David M Koelle
No abstract text is available yet for this article.
September 26, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29029260/an-adjuvanted-postfusion-f-protein-based-vaccine-did-not-prevent-respiratory-syncytial-virus-illness-in-older-adults
#4
Judith Falloon, Jing Yu, Mark T Esser, Tonya Villafana, Li Yu, Filip Dubovsky, Therese Takas, Myron J Levin, Ann R Falsey
Background: Respiratory syncytial virus (RSV) is an important cause of illness in older adults. This study assessed efficacy of a vaccine for prevention of RSV-associated acute respiratory illness (RSV-ARI), defined by specified symptoms with virologic confirmation. Methods: This phase 2b study evaluated RSV postfusion F protein (120 µg) with glucopyranosyl lipid adjuvant (5 µg) in 2% stable emulsion. Subjects aged ≥60 years were randomized 1:1 to vaccine or placebo (all received influenza vaccine)...
September 23, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29029224/immunogenicity-and-safety-of-an-adjuvanted-herpes-zoster-subunit-vaccine-co-administered-with-seasonal-influenza-vaccine-in-adults-aged-50-years-and-older
#5
Tino F Schwarz, Naresh Aggarwal, Beate Moeckesch, Isabelle Schenkenberger, Carine Claeys, Martine Douha, Olivier Godeaux, Katrijn Grupping, Thomas C Heineman, Marta Lopez Fauqued, Lidia Oostvogels, Peter Van den Steen, Himal Lal
Background: The immunogenicity and safety of an adjuvanted herpes zoster subunit vaccine (HZ/su) when co-administered with a quadrivalent seasonal inactivated influenza vaccine (IIV4) was investigated in a phase 3, open-label, randomized clinical trial in adults aged ≥50 years. Methods: Subjects were randomized 1:1 to receive either HZ/su (VZV glycoprotein E [gE]; AS01B Adjuvant System) and IIV4 at day 0 followed by a second HZ/su dose at month 2 (Co-ad group), or IIV4 at month 0 and HZ/su at months 2 and 4 (Control group)...
September 26, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29029187/evidence-for-the-selective-basis-of-transition-to-transversion-substitution-bias-in-two-rna-viruses
#6
Daniel M Lyons, Adam S Lauring
The substitution rates of transitions are higher than expected by chance relative to those of transversions. Many have argued that selection disfavors transversions, as nonsynonymous transversions are less likely to conserve biochemical properties of the original amino acid. Only recently has it become feasible to directly test this selective hypothesis by comparing the fitness effects of a large number of transition and transversion mutations. For example, a recent study of six viruses and one beta-lactamase gene did not find evidence supporting the selective hypothesis...
September 25, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29029175/beyond-antigenic-match-moving-toward-greater-understanding-of-influenza-vaccine-effectiveness
#7
Edward Belongia
No abstract text is available yet for this article.
September 27, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29029166/beyond-antigenic-match-possible-agent-host-and-immuno-epidemiological-influences-on-influenza-vaccine-effectiveness-during-the-2015-16-season-in-canada
#8
Danuta M Skowronski, Catharine Chambers, Suzana Sabaiduc, Gaston De Serres, Anne-Luise Winter, James A Dickinson, Jonathan B Gubbay, Steven J Drews, Christine Martineau, Hugues Charest, Mel Krajden, Nathalie Bastien, Yan Li
Background: Vaccine effectiveness (VE) estimates are reported from Canada's Sentinel Practitioner Surveillance Network (SPSN) for the 2015-16 influenza season, characterized by a delayed A(H1N1)pdm09 epidemic and concurrent B(Victoria) activity. Potential influences beyond antigenic match are explored including viral genomic variation, birth cohort effects, prior vaccination and epidemic period. Methods: VE was estimated by test-negative design comparing adjusted-odds ratio for influenza test-positivity among vaccinated vs...
October 4, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29029127/antibody-kinetics-and-response-to-routine-vaccinations-in-infants-born-to-women-who-received-an-investigational-trivalent-group-b-streptococcus-polysaccharide-crm197-conjugate-vaccine-during-pregnancy
#9
Shabir A Madhi, Anthonet Koen, Clare L Cutland, Lisa Jose, Niresha Govender, Frederick Wittke, Morounfolu Olugbosi, Ajoke Sobanjo-Ter Meulen, Sherryl Baker, Peter M Dull, Vas Narasimhan, Karen Slobod
Background: Maternal vaccination against group B Streptococcus (GBS) might provide protection against invasive GBS disease in infants. We investigated the kinetics of transplacentally transferred GBS serotype-specific capsular antibodies in the infants and their immune response to diphtheria toxoid and pneumococcal vaccination. Methods: This phase 1b/2, observer-blind, single-center study (NCT01193920) enrolled infants born to women previously randomized (1:1:1:1) to receive either GBS vaccine at dosages of 0...
September 23, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29029064/2015-2016-vaccine-effectiveness-of-live-attenuated-and-inactivated-influenza-vaccines-in-children-in-the-united-states
#10
Katherine A Poehling, Herve Caspard, Timothy R Peters, Edward A Belongia, Blaise Congeni, Manjusha Gaglani, Marie R Griffin, Stephanie A Irving, Poornima K Kavathekar, Huong Q McLean, Allison L Naleway, Kathleen Ryan, H Keipp Talbot, Christopher S Ambrose
Background: In the 2015-2016 season, quadrivalent live attenuated influenza vaccine (LAIV) and both trivalent and quadrivalent inactivated influenza vaccine (IIV) were available in the United States. Methods: This study, conducted according to a test-negative case-control design, enrolled children aged 2-17 years presenting to outpatient settings with fever and respiratory symptoms for <5 days at 8 sites across the United States between November 30, 2015 and April 15, 2016...
October 4, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29028980/influenza-among-young-children-in-bangladesh-clinical-characteristics-and-outcomes-from-a-randomized-clinical-trial
#11
Elizabeth Rotrosen, K Zaman, Jodi Feser, Justin R Ortiz, Doli Goswami, Amina Tahia Sharmeen, Mustafizur Rahman, Kristen D C Lewis, Md Ziaur Rahman, Burc Barin, W Abdullah Brooks, Kathleen M Neuzil
Background: Influenza causes substantial morbidity in children worldwide, although influenza vaccine is seldom used in low-resource settings. More information on the clinical presentation of influenza and the efficacy of vaccine is needed to inform policy. Methods: In 2013 we conducted a randomized, placebo-controlled clinical trial of live attenuated influenza vaccine (LAIV) in children aged 24-59 months in Bangladesh (N = 1761). If participants met prespecified specimen collection criteria, we collected nasopharyngeal washes for testing by singleplex reverse-transcription polymerase chain reaction (RT-PCR) for laboratory-confirmed influenza virus infection (LCI)...
October 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29028950/epidemiology-and-relative-severity-of-influenza-subtypes-in-singapore-in-the-post-pandemic-period-from-2009-to-2010
#12
Ee Hui Goh, Lili Jiang, Jung Pu Hsu, Linda Wei Lin Tan, Wei Yen Lim, Meng Chee Phoon, Yee Sin Leo, Ian G Barr, Vincent Tak Kwong Chow, Vernon J Lee, Cui Lin, Raymond Lin, Sapna P Sadarangani, Barnaby Young, Mark I-Cheng Chen
Background: After 2009, pandemic influenza A(H1N1) [A(H1N1)pdm09] cocirculated with A(H3N2) and B in Singapore. Methods: A cohort of 760 participants contributed demographic data and up to 4 blood samples each from October 2009 to September 2010. We compared epidemiology of the 3 subtypes and investigated evidence for heterotypic immunity through multivariable logistic regression using a generalized estimating equation. To examine age-related differences in severity between subtypes, we used LOESS (locally weighted smoothing) plots of hospitalization to infection ratios and explored birth cohort effects referencing the pandemic years (1957; 1968)...
September 23, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29028558/determinants-of-trust-in-the-flu-vaccine-for-african-americans-and-whites
#13
Vicki S Freimuth, Amelia M Jamison, Ji An, Gregory R Hancock, Sandra Crouse Quinn
Trust is thought to be a major factor in vaccine decisions, but few studies have empirically tested the role of trust in adult immunization. Utilizing a 2015 national survey of African American and White adults (n = 1630), we explore multiple dimensions of trust related to influenza immunization, including generalized trust, trust in the flu vaccine, and trust in the vaccine production process. We find African Americans report lower trust than Whites across all trust measures. When considering demographic, racial, and ideological predictors, generalized trust shows statistically significant effects on both trust in the flu vaccine and trust in the vaccine process...
October 4, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/29028455/health-indicators-for-older-sexual-minorities-national-health-interview-survey-2013-2014
#14
Christina N Dragon, Alison M Laffan, Erkan Erdem, Sean Cahill, Daniel Kenefick, Jiahui Ye, Samuel C Haffer
PURPOSE: Advances in lesbian, gay, and bisexual (sexual minority [SM]) acceptance and equality have been made in the past decade. However, certain SM subgroups continue to be disadvantaged due to lack of data and, thus, lack of knowledge about these populations. Data for older sexual minorities are especially lacking and will be increasingly important as more sexual minorities enter older age. This research explores results from a nationally representative health survey to elucidate some health indicators for older sexual minorities...
October 13, 2017: LGBT Health
https://www.readbyqxmd.com/read/29028432/coadministration-of-recombinant-adenovirus-expressing-gm-csf-with-inactivated-h5n1-avian-influenza-vaccine-increased-the-immune-responses-and-protective-efficacy-against-a-wild-bird-source-of-h5n1-challenge
#15
Xiangwei Wang, Xinglong Wang, Yanqing Jia, Chongyang Wang, Qiuxia Tang, Qingsong Han, Sa Xiao, Zengqi Yang
Wild birds play a key role in the spread of avian influenza virus (AIV). There is a continual urgent requirement for AIV vaccines to address the ongoing genetic changes of AIV. In the current study, we trialed a novel AIV vaccine against the wild bird source of H5N1 type AIV with recombinant adenovirus expressing granulocyte monocyte colony-stimulating factor (GM-CSF) as an adjuvant. A total of 150-day-old commercial chicks, with AIV-maternal-derived antibody, were divided into 6 groups. The primary vaccination was performed at day 14 followed by a subsequent boosting and intramuscular challenge on day 28 and 42, respectively...
October 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29028414/immunization-attitudes-and-practices-among-family-medicine-providers
#16
Cynthia A Bonville, Joseph B Domachowske, Donald A Cibula, Manika Suryadevara
OBJECTIVE: To describe immunization attitudes and practices among family medicine providers across New York State. METHODS: In this cross-sectional survey study, family medicine providers across New York State completed a questionnaire to assess vaccine beliefs and barriers and immunization practices. STATISTICAL ANALYSIS: Descriptive statistical methods were used to define provider characteristics, knowledge and vaccine practices. RESULTS: Completed questionnaires from 226 family medicine providers were included for analysis...
October 13, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29028164/executive-summary-of-the-9th-meeting-of-the-who-working-group-rt-pcr-for-the-detection-and-subtyping-of-influenza-viruses
#17
(no author information available yet)
No abstract text is available yet for this article.
October 13, 2017: Relevé épidémiologique Hebdomadaire
https://www.readbyqxmd.com/read/29027752/label-free-multiplex-dna-detection-utilizing-projected-capacitive-touchscreen
#18
Joon Young Lee, Byoung Yeon Won, Hyun Gyu Park
We have developed a novel strategy to achieve label-free multiplex DNA detection system based on the projected capacitive touchscreen. Touchscreen panel was first fabricated by patterning the ITO (indium-tin-oxide) electrode array on the glass wafer, and the electrodes were modified with the respective capture probe DNA sequences complementary to hemagglutinin1 (H1), neuraminidase1 (N1), and matrix1 (M1) DNA to demonstrate the molecular diagnosis of H1N1 influenza virus as a model pathogen. DNA sample was then applied to the electrodes to allow hybridization of target DNA with the corresponding complementary capture probe...
October 13, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/29027604/prevalence-of-avian-influenza-h9n2-in-commercial-quail-partridge-and-turkey-farms-in-iran-2014-2015
#19
Mohammad Hosein Fallah Mehrabadi, Alireza Bahonar, Kamran Mirzaei, Aidin Molouki, Arash Ghalyanchilangeroudi, Seyed Ali Ghafouri, Farshad Tehrani, Swee Hua Erin Lim
Avian influenza virus (AIV) H9N2 subtype is endemic in Iran and causes substantial economic loss to the growing poultry industry within the country. In this study, a cross-sectional analysis was carried out to determine the sero-prevalence of H9N2 in several commercial farms between the years 2014 and 2015. The comparison of the mean of serum titers and the ratio of sero-positive birds between all units were analyzed using one-way ANOVA test. In 2014, a total of 77 farms (58 turkey farms, 14 quail farms, and 5 partridge farms) and 894 birds (682 turkeys, 154 quails, and 58 partridges) were sampled while in 2015, a total of 69 farms (54 turkey farms, 8 quail farms, and 7 partridge farms) and 856 birds (675 turkeys, 105 quails, and 76 partridges) were sampled...
October 13, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29027518/-influenza-vaccination-of-patients-with-solid-tumours-during-chemotherapy-efficacy-and-safety
#20
A M Vollaard, I Schreuder, L Slok-Raijmakers, W Opstelten, G F Rimmelzwaan, A J Gelderblom
- Adult patients with solid tumours receiving chemotherapy have reduced immunity against infections and are at increased risk of influenza infection and its complications. However, many of said patients are not vaccinated for influenza.- Limited observational research in this patient group has given some indication of the protective effects of the influenza vaccine on clinical outcome measures.- Serological studies have shown that the antibody response following influenza vaccination is often less pronounced in patients with solid tumours compared to healthy individuals...
2017: Nederlands Tijdschrift Voor Geneeskunde
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