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Vaccine

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https://www.readbyqxmd.com/read/29150210/a-behavioral-economics-approach-to-the-failed-hpv-vaccination-program-in-japan
#1
Asami Yagi, Yutaka Ueda, Tadashi Kimura
No abstract text is available yet for this article.
November 15, 2017: Vaccine
https://www.readbyqxmd.com/read/29150209/exploring-the-relationship-between-polio-type-2-serum-neutralizing-antibodies-and-intestinal-immunity-using-data-from-two-randomized-controlled-trials-of-new-bopv-ipv-immunization-schedules
#2
Ananda S Bandyopadhyay, Edwin J Asturias, Miguel O'Ryan, M Steven Oberste, William Weldon, Ralf Clemens, Ricardo Rüttimann, John F Modlin, Chris Gast
BACKGROUND: Inactivated polio vaccine (IPV) is now the only source of routine type 2 protection. The relationship, if any, between vaccine-induced type 2 humoral and intestinal immunity is poorly understood. METHODS: Two clinical trials in five Latin American countries of mixed or sequential bOPV-IPV schedules in 1640 infants provided data on serum neutralizing antibodies (NAb) and intestinal immunity, assessed as viral shedding following oral mOPV2 challenge. Analyses with generalized additive and quantile regression models examined the relationships between prechallenge NAb titers and proportion, duration and titers (magnitude) of viral shedding...
November 14, 2017: Vaccine
https://www.readbyqxmd.com/read/29150208/development-of-a-synthetic-vi-polysaccharide-vaccine-for-typhoid-fever
#3
Yawei Ni, Michael J Springer, Jianhua Guo, Isaac Finger-Baker, James P Wilson, Ronald R Cobb, Debra Turner, Ian Tizard
Typhoid fever remains a serious public health problem with a high impact on toddlers and young children. Vaccines against the Vi capsular polysaccharide are efficacious against typhoid fever demonstrating that antibodies against Vi confer protection. The currently licensed Vi typhoid vaccines have however limited efficacy and are manufactured by a complex process from wild-type bacteria. Due to these inherent issues with the current vaccines, an alternative vaccine based on an O-acetylated high molecular weight (HMW) polygalacturonic acid (GelSite-OAc™) was generated...
November 14, 2017: Vaccine
https://www.readbyqxmd.com/read/29146382/on-the-bias-of-estimates-of-influenza-vaccine-effectiveness-from-test-negative-studies
#4
Kylie E C Ainslie, Meng Shi, Michael Haber, Walter A Orenstein
Estimates of the effectiveness of influenza vaccines are commonly obtained from a test-negative design (TND) study, where cases and controls are patients seeking care for an acute respiratory illness who test positive and negative, respectively, for influenza infection. Vaccine effectiveness (VE) estimates from TND studies are usually interpreted as vaccine effectiveness against medically-attended influenza (MAI). However, it is also important to estimate VE against any influenza illness (symptomatic influenza (SI)) as individuals with SI are still a public health burden even if they do not seek medical care...
November 13, 2017: Vaccine
https://www.readbyqxmd.com/read/29146381/impact-of-infant-pneumococcal-conjugate-vaccination-on-community-acquired-pneumonia-hospitalization-in-all-ages-in-the-netherlands
#5
A M M van Deursen, T M Schurink-Van't Klooster, W H Man, J van de Kassteele, A B van Gageldonk-Lafeber, P C J L Bruijning-Verhagen, H E de Melker, E A M Sanders, M J Knol
BACKGROUND: The long-term impact of pneumococcal conjugate vaccines on pneumonia hospitalizations in all age-groups varies between countries. In the Netherlands, the 7-valent pneumococcal conjugate vaccine (PCV7) was implemented for newborns in 2006 and replaced by PCV10 in 2011. We assessed the impact of PCVs on community-acquired pneumonia (CAP) hospitalization rates in all age-groups. METHODS: A time series analysis using Poisson regression was performed on 155,994 CAP hospitalizations...
November 13, 2017: Vaccine
https://www.readbyqxmd.com/read/29146380/inclusion-of-the-value-of-herd-immunity-in-economic-evaluations-of-vaccines-a-systematic-review-of-methods-used
#6
REVIEW
Liv S Nymark, Tarang Sharma, Alexander Miller, Ulrika Enemark, Ulla Kou Griffiths
OBJECTIVE: The objectives of this review were to identify vaccine economic evaluations that include herd immunity and describe the methodological approaches used. METHODS: We used Kim and Goldie's search strategy from a systematic review (1976-2007) of modelling approaches used in vaccine economic evaluations and additionally searched PubMed/MEDLINE and Embase for 2007-2015. Studies were classified according to modelling approach used. Methods for estimating herd immunity effects were described, in particular for the static models...
November 13, 2017: Vaccine
https://www.readbyqxmd.com/read/29146379/lt-adjuvant-modulates-epitope-specificity-and-improves-the-efficacy-of-murine-antibodies-elicited-by-sublingual-vaccination-with-the-n-terminal-domain-of-streptococcus-mutans-p1
#7
Milene Tavares Batista, Ewerton Lucena Ferreira, Gisela de Souza Pereira, Phillip Stafford, Denicar Lina Nascimento Fabris Maeda, Juliana Falcão Rodrigues, L Jeannine Brady, Stephen Albert Johnston, Luís Carlos de Souza Ferreira, Rita de Cássia Café Ferreira
In this study, we evaluated the immunogenicity, protective efficacy and peptide-based immune signatures of antibodies raised in mice after sublingual immunization with a recombinant form of the P1 (aka AgI/II, PAc) adhesin (P139-512) of Streptococcus mutans, a major etiological agent of dental caries. Sublingual administration of P139-512 in combination with the mucosal adjuvant LTK4R (a derivative of heat-labile LT toxin) induced strong and long-lasting systemic and mucosal immune responses. Incorporation of the adjuvant resulted in an enhancement of the anti-adhesive and anti-colonization activity against S...
November 13, 2017: Vaccine
https://www.readbyqxmd.com/read/29137821/equination-inoculation-of-horsepox-an-early-alternative-to-vaccination-inoculation-of-cowpox-and-the-potential-role-of-horsepox-virus-in-the-origin-of-the-smallpox-vaccine
#8
REVIEW
José Esparza, Livia Schrick, Clarissa R Damaso, Andreas Nitsche
For almost 150 years after Edward Jenner had published the "Inquiry" in 1798, it was generally assumed that the cowpox virus was the vaccine against smallpox. It was not until 1939 when it was shown that vaccinia, the smallpox vaccine virus, was serologically related but different from the cowpox virus. In the absence of a known natural host, vaccinia has been considered to be a laboratory virus that may have originated from mutational or recombinational events involving cowpox virus, variola viruses or some unknown ancestral Orthopoxvirus...
November 11, 2017: Vaccine
https://www.readbyqxmd.com/read/29132996/q-vax-q-fever-vaccine-failures-victoria-australia-1994-2013
#9
Katherine A Bond, Lucinda J Franklin, Brett Sutton, Simon M Firestone
Q-Vax®, a whole cell formalin inactivated vaccine, is currently the only licensed Q fever vaccine for humans world-wide. Efficacy is high, although vaccine failures have been described for those vaccinated within the incubation of a naturally acquired infection. In Australia, it is widely used to prevent occupational acquisition of Q fever and is the mainstay for outbreak control. A retrospective review of all notified cases of acute Q fever to the Victorian department of health, 1993-2013, revealed 34 of 659 cases were previously vaccinated and 10 cases were positive on pre-vaccination screening, precluding vaccination...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29132995/comparative-functional-potency-of-dna-vaccines-encoding-plasmodium-falciparum-transmission-blocking-target-antigens-pfs48-45-and-pfs25-administered-alone-or-in-combination-by-in-vivo-electroporation-in-rhesus-macaques
#10
Dibyadyuti Datta, Geetha P Bansal, Brooke Grasperge, Dale S Martin, Mario Philipp, Dietlind Gerloff, Barry Ellefsen, Drew Hannaman, Nirbhay Kumar
Antibodies recognizing conformational epitopes in Pfs48/45, an antigen expressed on the surface of Plasmodium falciparum gametes and zygotes, have firmly established Pfs48/45 as a promising transmission blocking vaccine (TBV) candidate. However, it has been difficult to reproducibly express Pfs48/45 in a variety of recombinant expression systems. The goal of our studies was to evaluate functional immunogenicity of Pfs48/45 using DNA vaccine format in rhesus macaques. An additional goal was to ensure that when used in combination with another malarial antigen, specific immunity to both antigens was not compromised...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29132994/countries-interest-in-a-hepatitis-b-vaccine-licensed-for-the-controlled-temperature-chain-survey-results-from-african-and-western-pacific-regions
#11
Dörte Petit, Carole Tevi-Benissan, Joseph Woodring, Karen Hennessey, Anna-Lea Kahn
Chronic hepatitis B infection can be prevented by hepatitis B vaccine birth dose (hepB-BD) given within 24 h after birth, followed by two hepatitis B vaccinations within the first year of life. Yet nearly half of World Health Organization (WHO) Member States do not provide a hepB-BD. Barriers are primarily attributed to vaccine storage and transportation, as well as high rates of home births. Delivering the vaccine outside the cold chain could potentially increase coverage. To do this, WHO recommends vaccines be licensed for use in a "controlled temperature chain" (CTC), which requires a given product to tolerate temperature excursions up to at least 40 °C for a minimum of three days...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29132993/re-evaluating-the-effect-of-favipiravir-treatment-on-rabies-virus-infection
#12
Ashley C Banyard, Karen L Mansfield, Guanghui Wu, David Selden, Leigh Thorne, Colin Birch, Penelope Koraka, Albert D M E Osterhaus, Anthony R Fooks
There is no antiviral treatment available once clinical disease following rabies virus infection has initiated. Considered a neglected tropical disease, >60,000 human rabies deaths are estimated each year despite the availability of pre- and post-exposure prophylaxis for pre-immunisation or administration following a potential exposure before the onset of clinical disease. Such post-exposure treatments include administration of rabies immunoglobulin (RIG) and vaccination at a distant site to prime a humoral immune response...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29132992/measuring-the-timeliness-of-childhood-vaccinations-using-cohort-data-and-routine-health-records-to-evaluate-quality-of-immunisation-services
#13
Suzanne Walton, Mario Cortina-Borja, Carol Dezateux, Lucy J Griffiths, Karen Tingay, Ashley Akbari, Amrita Bandyopadhyay, Ronan A Lyons, Helen Bedford
BACKGROUND: To achieve full benefits of vaccination programmes, high uptake and timely receipt of vaccinations are required. OBJECTIVES: To examine uptake and timeliness of infant and pre-school booster vaccines using cohort study data linked to health records. METHODS: We included 1782 children, born between 2000 and 2001, participating in the Millennium Cohort Study and resident in Wales, whose parents gave consent for linkage to National Community Child Health Database records at the age seven year contact...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29132991/attitudes-about-adult-vaccines-and-reminder-recall-in-a-safety-net-population
#14
Karen Albright, Laura P Hurley, Steven Lockhart, Dennis Gurfinkel, Brenda Beaty, L Miriam Dickinson, Anne Libby, Allison Kempe
Little is known about adult patients' attitudes toward vaccination and preferences for reminder/recall. The objective of this study was to determine patient perspectives on adult vaccines generally; attitudes about Tdap, pneumococcal polysaccharide (PPSV-23), and seasonal influenza vaccines specifically; and preferences for adult reminder/recall delivery. Twelve focus groups were conducted with 68 patients in a safety net health system. The sample was stratified by preferred language (English or Spanish), age (18-64 or 65+), and health status (with or without chronic conditions)...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29132990/beneficiary-characteristics-and-vaccinations-in-the-end-stage-renal-disease-medicare-beneficiary-population-an-analysis-of-claims-data-2006-2015
#15
Angela K Shen, Jeffrey A Kelman, Rob Warnock, Weiwei Zhang, Stephaeno Brereton, Stephen McKean, Michael Wernecke, Steve Chu, Bruce G Gellin
BACKGROUND: The Advisory Committee on Immunization Practices (ACIP) routinely recommends three vaccines - influenza, hepatitis B, and pneumococcal vaccines - for End-Stage Renal Disease (ESRD) dialysis patients. METHODS: We sought to assess vaccination coverage among fee-for-service (FFS) Medicare beneficiaries with ESRD who received Part B dialysis services at any point from January 1, 2006 through December 31, 2015 (through June 30, 2016 for influenza). To assess influenza vaccination rates in a given influenza season, we restricted the population to beneficiaries who were continuously enrolled in Medicare Parts A and B throughout all twelve months of that season...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29132989/differential-gene-expression-elicited-by-children-in-response-to-the-2015-16-live-attenuated-versus-inactivated-influenza-vaccine
#16
Kelly Stefano Cole, Judith M Martin, William T Horne, Chyongchiou J Lin, Mary Patricia Nowalk, John F Alcorn, Richard K Zimmerman
BACKGROUND: In recent influenza seasons, the live attenuated influenza vaccine (LAIV) has not demonstrated the same level of vaccine effectiveness as that observed among children who received the inactivated influenza vaccine (IIV). To better understand this difference, this study compared the mRNA sequencing transcription profile (RNA seq) in children who received either IIV or LAIV. METHODS: Children 3-17years of age receiving quadrivalent influenza vaccine were enrolled...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29132988/safety-and-immunogenicity-of-a-novel-multiple-antigen-pneumococcal-vaccine-in-adults-a-phase-1-randomised-clinical-trial
#17
Claire Entwisle, Sue Hill, Yin Pang, Michael Joachim, Ann McIlgorm, Camilo Colaco, David Goldblatt, Polly De Gorguette D'Argoeuves, Chris Bailey
BACKGROUND: Pneumococcal vaccines, combining multiple protein antigens, provide an alternative approach to currently marketed vaccines and may provide broader protection against pneumococcal disease. This trial evaluated the safety and immunogenicity of a novel vaccine candidate PnuBioVax in healthy young adults. METHODS: In a Phase 1 double-blind study, 36 subjects (18-40 years) were randomised to receive 3 doses of PnuBioVax, 28 days apart, at one of three dose levels (50, 200, 500 µg) or placebo...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29129454/announcing-the-publication-of-the-who-immunological-basis-for-immunization-series-module-on-pertussis-vaccines
#18
(no author information available yet)
In 2017, the World Health Organization (WHO) published an updated document aimed at facilitating the understanding of the immunological basis of pertussis vaccines and their use. The document "The Immunological Basis for Immunization Series: Pertussis Vaccines" is freely available on the WHO website. The main purpose of the module is to provide national immunization managers and vaccination professionals with an overview of the scientific basis of vaccination against pertussis and the immunological basis for the WHO position on pertussis vaccines...
November 9, 2017: Vaccine
https://www.readbyqxmd.com/read/29129453/hepatitis-b-virus-core-particles-containing-multiple-epitopes-confer-protection-against-enterovirus-71-and-coxsackievirus-a16-infection-in-mice
#19
Chunling Huo, Jie Yang, Lei Lei, Lei Qiao, Jiantao Xin, Zishu Pan
Human enterovirus 71 (EV71) and coxsackievirus A16 (CA16) are the two major causative agents of hand-foot-and-mouth disease (HFMD). To investigate novel combined vaccines to prevent EV71 and CA16 infection, we constructed chimeric virus-like particles (tHBc/SPA or tHBc/SP VLPs) displaying conserved epitopes of EV71 (aa 208-222 of VP1 and aa 248-263 of VP2) and CA16 (aa271-285 of VP1) using a truncated hepatitis B virus core carrier (tHBc). Immunization with the chimeric VLPs induced epitope- or virus-specific IgG and neutralization antibodies against EV71 and CA16 in the mice...
November 9, 2017: Vaccine
https://www.readbyqxmd.com/read/29129452/long-term-humoral-immunity-induced-by-cvc1302-adjuvanted-serotype-o-foot-and-mouth-disease-inactivated-vaccine-correlates-with-promoted-t-follicular-helper-cells-and-thus-germinal-center-responses-in-mice
#20
Luping Du, Jin Chen, Liting Hou, Xiaoming Yu, Qisheng Zheng, Jibo Hou
Long-lasting humoral immunity is one of the necessary criteria for a successful vaccine. In our previous study, it was demonstrated that the immunopotentiator CVC1302 could improve the humoral immunity induced by the foot and mouth disease virus (FMDV) killed vaccine (KV) with only one dose. Significantly higher FMDV-specific antibody titers and more persistent antibody responses were observed in pigs receiving CVC1302-adjuvanted KV (KV-CVC1302) than in those inoculated with KV alone. In this study, we show that CVC1302 enhances murine IgG responses to FMDV by promoting a potent T follicular helper cell (TFH) response, which directly controls the magnitude of the germinal center (GC) B cell response...
November 9, 2017: Vaccine
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