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Influenza vaccines

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https://www.readbyqxmd.com/read/29453796/using-a-hospital-admission-survey-to-estimate-the-burden-of-influenza-associated-severe-acute-respiratory-infection-in-one-province-of-cambodia-methods-used-and-lessons-learned
#1
Rebekah J Stewart, Sovann Ly, Borann Sar, Vanra Ieng, Seng Heng, Kheng Sim, Chiedza Machingaidze, Katherine Roguski, Erica Dueger, Ann Moen, Reiko Tsuyuoka, A Danielle Iuliano
BACKGROUND: Understanding the burden of influenza-associated severe acute respiratory infection (SARI) is important for setting national influenza surveillance and vaccine priorities. Estimating influenza-associated SARI rates requires hospital-based surveillance data and a population-based denominator, which can be challenging to determine. OBJECTIVES: We present an application of the World Health Organization's recently developed manual (WHO Manual) including hospital admission survey (HAS) methods for estimating the burden of influenza-associated SARI, with lessons learned to help others calculate similar estimates...
February 16, 2018: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/29453412/pulmonary-antigen-encounter-regulates-the-establishment-of-tissue-resident-cd8-memory-t-cells-in-the-lung-airways-and-parenchyma
#2
Sean R McMaster, Alexander N Wein, Paul R Dunbar, Sarah L Hayward, Emily K Cartwright, Timothy L Denning, Jacob E Kohlmeier
Resident memory CD8 T (T RM ) cells in the lung parenchyma (LP) and airways provide heterologous protection against influenza virus challenge. However, scant knowledge exists regarding factors necessary to establish and maintain lung CD8 T RM . Here we demonstrate that, in contrast to mechanisms described for other tissues, airway, and LP CD8 T RM establishment requires cognate antigen recognition in the lung. Systemic effector CD8 T cells could be transiently pulled into the lung in response to localized inflammation, however these effector cells failed to establish tissue residency unless antigen was present in the pulmonary environment...
February 16, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29453058/antigenic-and-genetic-evolution-of-contemporary-swine-h1-influenza-viruses-in-the-united-states
#3
Daniela S Rajao, Tavis K Anderson, Pravina Kitikoon, Jered Stratton, Nicola S Lewis, Amy L Vincent
Several lineages of influenza A viruses (IAV) currently circulate in North American pigs. Genetic diversity is further increased by transmission of IAV between swine and humans and subsequent evolution. Here, we characterized the genetic and antigenic evolution of contemporary swine H1N1 and H1N2 viruses representing clusters H1-α (1A.1), H1-β (1A.2), H1pdm (1A.3.3.2), H1-γ (1A.3.3.3), H1-δ1 (1B.2.2), and H1-δ2 (1B.2.1) currently circulating in pigs in the United States. The δ1-viruses diversified into two new genetic clades, H1-δ1a (1B...
February 13, 2018: Virology
https://www.readbyqxmd.com/read/29452497/no-signal-of-interactions-between-influenza-vaccines-and-drugs-used-for-chronic-diseases-a-case-by-case-analysis-of-the-vaccine-adverse-event-reporting-system-and-vigibase
#4
Carla Carnovale, Emanuel Raschi, Luca Leonardi, Ugo Moretti, Fabrizio De Ponti, Marta Gentili, Marco Pozzi, Emilio Clementi, Elisabetta Poluzzi, Sonia Radice
BACKGROUND: An increasing number of reports indicates that vaccines against influenza may interact with specific drugs via drug metabolism. To date, actual impact of vaccine-drug interactions observed in the real world clinical practice has not been investigated. RESEARCH DESIGN AND METHODS: From VAERS and VigiBase, we collected Adverse Event Following Immunization (AEFI) reports for individuals receiving vaccines against influenza recorded as suspect and selected cases where predictable toxicity was recorded with oral anticoagulants, antiepileptics and statins (i...
February 16, 2018: Expert Review of Vaccines
https://www.readbyqxmd.com/read/29452380/relative-vaccine-effectiveness-of-high-dose-versus-standard-dose-influenza-vaccines-among-veterans-health-administration-patients
#5
Yinong Young-Xu, Robertus Van Aalst, Salaheddin M Mahmud, Kenneth J Rothman, Julia Thornton Snider, Daniel Westreich, Vincent Mor, Stefan Gravenstein, Jason K H Lee, Edward W Thommes, Michael D Decker, Ayman Chit
Background: To examine whether a high-dose inactivated influenza vaccine was more efficacious in preventing hospitalizations than a standard-dose vaccine in the Veterans Health Administration (VHA) senior population. Methods: This study estimated the relative vaccine effectiveness (rVE) of high-dose versus standard-dose using a retrospective cohort of VHA patients 65 years of age or older in the 2015-16 influenza season. To adjust for measured confounders, we matched each high-dose recipient with up to four standard-dose recipients vaccinated at the same location within a two-week period and having two or more pre-existing medical co-morbidities...
February 14, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29452372/impact-of-timing-of-influenza-vaccination-in-pregnancy-on-transplacental-antibody-transfer-influenza-incidence-and-birth-outcomes-a-randomized-trial-in-rural-nepal
#6
Joanne Katz, Janet A Englund, Mark C Steinhoff, Subarna K Khatry, Laxman Shrestha, Jane Kuypers, Luke C Mullany, Helen Y Chu, Steven C LeClerq, Naoko Kozuki, James M Tielsch
Background: Maternal influenza vaccination protects mothers and their infants in low resource settings but little is known about whether the protection varies by gestational age at vaccination. Methods: Women of childbearing age in rural southern Nepal were surveilled for pregnancy, consented and randomized to receive maternal influenza vaccination or placebo, with randomization stratified on gestational age (17-25 or 26-34 weeks). Enrollment occurred in two annual cohorts and vaccinations occurred from April 2011 through September 2013...
February 14, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29451834/influenza-vaccination-2014-2015-results-of-a-survey-conducted-among-general-practitioners-in-italy
#7
Miriam Levi, Paolo Bonanni, Marco Biffino, Michele Conversano, Maria Corongiu, Paolo Morato, Tommasa Maio
Introduction The aim of the present study was to evaluate orientation, organizational procedures implemented and difficulties faced by general practitioners (GPs) during the 2014/15 seasonal influenza vaccination programme, as well as GPs' general attitude towards vaccinations. Methods An ad hoc online survey was developed and administered to general practitioners members of the Italian Federation of GPs (Federazione Italiana Medici di Medicina Generale - FIMMG). Overall, 10,000 survey invitations were sent...
February 16, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29451833/development-and-pilot-testing-of-a-text-message-vaccine-reminder-system-for-use-during-an-influenza-pandemic
#8
Jonathan D Lehnert, Alex Shevach, Sydney Walker, Rose Wang, Thomas J Fitzgerald, Samuel B Graitcer
In an influenza pandemic, two vaccine doses administered 21 days apart may be needed for individuals of all ages to achieve seroprotection. Achieving dose-series completion can be challenging even for routinely recommended vaccines. To prepare for a two-dose influenza pandemic vaccine campaign and promote dose-series completion and correct dosing intervals, CDC and its partners developed a text message-based vaccine reminder system to remind persons who receive a first dose of pandemic influenza vaccine to receive the second dose...
February 16, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29451040/pulmonary-delivery-of-influenza-vaccine-formulations-in-cotton-rats-site-of-deposition-plays-a-minor-role-in-the-protective-efficacy-against-clinical-isolate-of-h1n1pdm-virus
#9
Yoshita Bhide, Jasmine Tomar, Wei Dong, Jacqueline de Vries-Idema, Henderik W Frijlink, Anke Huckriede, Wouter L J Hinrichs
Administration of influenza vaccines to the lungs could be an attractive alternative to conventional parenteral administration. In this study, we investigated the deposition site of pulmonary delivered liquid and powder influenza vaccine formulations and its relation to their immunogenicity and protective efficacy. In vivo deposition studies in cotton rats revealed that, the powder formulation was mainly deposited in the trachea ( ∼ 65%) whereas the liquid was homogenously distributed throughout the lungs ( ∼ 96%)...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29449842/pan-influenza-a-protection-by-prime-boost-vaccination-with-cold-adapted-live-attenuated-influenza-vaccine-in-a-mouse-model
#10
Yo Han Jang, Joo Young Kim, Young Ho Byun, Ahyun Son, Jeong-Yoon Lee, Yoon Jae Lee, Jun Chang, Baik Lin Seong
Influenza virus infections continually pose a major public health threat with seasonal epidemics and sporadic pandemics worldwide. While currently licensed influenza vaccines provide only strain-specific protection, antigenic drift and shift occasionally render the viruses resistant to the host immune responses, which highlight the need for a vaccine that provides broad protection against multiple subtypes. In this study, we suggest a vaccination strategy using cold-adapted, live attenuated influenza vaccines (CAIVs) to provide a broad, potent, and safe cross-protection covering antigenically distinct hemagglutinin (HA) groups 1 and 2 influenza viruses...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29449342/epilepsy-in-children-after-pandemic-influenza-vaccination
#11
Siri E Håberg, Kari M Aaberg, Pål Surén, Lill Trogstad, Sara Ghaderi, Camilla Stoltenberg, Per Magnus, Inger Johanne Bakken
OBJECTIVES: To determine if pandemic influenza vaccination was associated with an increased risk of epilepsy in children. METHODS: Information from Norwegian registries from 2006 through 2014 on all children <18 years living in Norway on October 1, 2009 was used in Cox regression models to estimate hazard ratios for incident epilepsy after vaccination. A self-controlled case series analysis was used to estimate incidence rate ratios in defined risk periods after pandemic vaccination...
February 15, 2018: Pediatrics
https://www.readbyqxmd.com/read/29449287/global-influenza-hospital-based-surveillance-network-gihsn-results-of-surveillance-of-influenza-and-other-respiratory-viruses-in-hospitalised-patients-in-brazil-2015
#12
Sonia M Raboni, Fernanda E A Moura, Braulia C Caetano, Valéria M Avanzi, Luciane A Pereira, Meri B Nogueira, Luine R Vidal, Isabel C F Tavares, Florence K Pradel, Valentina S Picot, Joan Puig-Barbera, Marilda M Siqueira
BACKGROUND: Influenza-like illness occurs annually worldwide, with peak timing and severity varying seasonally, resulting in significant annual mortality. OBJECTIVES: There were three objectives: (1) to describe the epidemiological and clinical features of hospitalised patients with severe acute respiratory infection caused by influenza and other respiratory viruses (ORVs); (2) to report the influenza seasonality in the region and (3) to correlate findings of influenza circulation and immunisation time in Brazil...
February 15, 2018: BMJ Open
https://www.readbyqxmd.com/read/29449194/prostaglandin-d2-receptor-dp1-antibodies-predict-vaccine-induced-and-spontaneous-narcolepsy-type-1-large-scale-study-of-antibody-profiling
#13
Helle Sadam, Arno Pihlak, Anri Kivil, Susan Pihelgas, Mariliis Jaago, Priit Adler, Jaak Vilo, Olli Vapalahti, Toomas Neuman, Dan Lindholm, Markku Partinen, Antti Vaheri, Kaia Palm
BACKGROUND: Neuropathological findings support an autoimmune etiology as an underlying factor for loss of orexin-producing neurons in spontaneous narcolepsy type 1 (narcolepsy with cataplexy; sNT1) as well as in Pandemrix influenza vaccine-induced narcolepsy type 1 (Pdmx-NT1). The precise molecular target or antigens for the immune response have, however, remained elusive. METHODS: Here we have performed a comprehensive antigenic repertoire analysis of sera using the next-generation phage display method - mimotope variation analysis (MVA)...
February 2, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29448114/safe-and-effective-intradermal-influenza-vaccine-desensitization-for-delayed-influenza-vaccine-allergy
#14
Tsuzumi Kanaoka, Kazune Matsuoka, Marcus Shaker
No abstract text is available yet for this article.
February 12, 2018: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29447623/community-health-workers-on-a-college-campus-effects-on-influenza-vaccination
#15
Jack J Huang, Maria Francesconi, Madeline H Cooper, Allyson Covello, Michelle Guo, Soheyla D Gharib
OBJECTIVE: To assess the impact of a campus community health worker program (HealthPALs) on student influenza vaccination. PARTICIPANTS: Undergraduate students at a northeastern US university (enrollment 6650), influenza seasons 2011-2012 through 2015-2016. METHODS: Study design: Difference-in-differences analysis of student vaccination at campus dormitory influenza clinics during intervention vs. baseline. INTERVENTION: In the first intervention year, HealthPALs conducted in-person peer outreach at several campus dormitory flu clinics...
February 15, 2018: Journal of American College Health: J of ACH
https://www.readbyqxmd.com/read/29447484/cationic-dda-tdb-liposome-as-a-mucosal-vaccine-adjuvant-for-uptake-by-dendritic-cells-in-vitro-induces-potent-humoural-immunity
#16
Wenjing Qu, Na Li, Rui Yu, Wenbao Zuo, Tingting Fu, Wenling Fei, Yanhui Hou, Yanhua Liu, Jianhong Yang
The cationic dimethyldioctadecylammonium/trehalose 6,6,9-dibehenate (DDA/TDB) liposome is as a strong adjuvant system for vaccines, with remarkable immunostimulatory activity. The mucosal administration of vaccines is a potential strategy for inducing earlier and stronger mucosal immune responses to infectious diseases. In this study, we assessed whether the intranasal administration of cationic DDA/TDB liposomes combined with influenza antigen A (H3N2) can be used as a highly efficacious vaccine to induce mucosal and systemic antibody responses...
February 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29447357/analysis-of-cluster-randomized-test-negative-designs-cluster-level-methods
#17
Nicholas P Jewell, Suzanne Dufault, Zoe Cutcher, Cameron P Simmons, Katherine L Anders
Intervention trials of vector control methods often require community level randomization with appropriate inferential methods. For many interventions, the possibility of confounding due to the effects of health-care seeking behavior on disease ascertainment remains a concern. The test-negative design, a variant of the case-control method, was introduced to mitigate this issue in the assessment of the efficacy of influenza vaccination (measured at an individual level) on influenza infection. Here, we introduce a cluster-randomized test-negative design that includes randomization of the intervention at a group level...
February 12, 2018: Biostatistics
https://www.readbyqxmd.com/read/29447278/an-increasing-trend-of-rural-infections-of-human-influenza-a-h7n9-from-2013-to-2017-a-retrospective-analysis-of-patient-exposure-histories-in-zhejiang-province-china
#18
Enfu Chen, Maggie H Wang, Fan He, Riyang Sun, Wei Cheng, Benny C Y Zee, Steven Y F Lau, Xiaoxiao Wang, Ka Chun Chong
BACKGROUND: Although investigations have shown that closing live poultry markets (LPMs) is highly effective in controlling human influenza A (H7N9) infections, many of the urban LPMs were shut down, but rural LPMs remained open. This study aimed to compare the proportional changes between urban and rural infections in the Zhejiang province from 2013 to 2017 by analyzing the exposure histories of human cases. METHODS: All laboratory-confirmed cases of H7N9 from 2013 (the first wave) to 2017 (the fifth wave) in the Zhejiang province of China were analyzed...
2018: PloS One
https://www.readbyqxmd.com/read/29447141/interim-estimates-of-2017-18-seasonal-influenza-vaccine-effectiveness-united-states-february-2018
#19
Brendan Flannery, Jessie R Chung, Edward A Belongia, Huong Q McLean, Manjusha Gaglani, Kempapura Murthy, Richard K Zimmerman, Mary Patricia Nowalk, Michael L Jackson, Lisa A Jackson, Arnold S Monto, Emily T Martin, Angie Foust, Wendy Sessions, LaShondra Berman, John R Barnes, Sarah Spencer, Alicia M Fry
In the United States, annual vaccination against seasonal influenza is recommended for all persons aged ≥6 months (1). During each influenza season since 2004-05, CDC has estimated the effectiveness of seasonal influenza vaccine to prevent laboratory-confirmed influenza associated with medically attended acute respiratory illness (ARI). This report uses data from 4,562 children and adults enrolled in the U.S. Influenza Vaccine Effectiveness Network (U.S. Flu VE Network) during November 2, 2017-February 3, 2018...
February 16, 2018: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29446442/characterization-of-source-plasma-from-self-identified-vaccinated-or-convalescent-donors-during-the-2009-h1n1-pandemic
#20
Alexey Khalenkov, Yong He, Jennifer L Reed, Thomas R Kreil, John McVey, Malgorzata Norton, John Scott, Dorothy E Scott
BACKGROUND: Influenza immune globulin, manufactured from plasma of convalescent or vaccinated donors has been proposed as a potential therapy for severe influenza. In 2009, a program was initiated to collect plasma from donors who self-identified as having had H1N1 influenza or having received the H1N1 pandemic vaccine. The goal of this study was to determine the efficiency of donor screening by self-identification without antibody testing, and to evaluate demographic predictors of high-titer donations...
February 15, 2018: Transfusion
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