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Vaccine

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https://www.readbyqxmd.com/read/28343782/lifestyle-socioeconomic-characteristics-and-medical-history-of-elderly-persons-who-receive-seasonal-influenza-vaccination-in-a-tax-supported-healthcare-system
#1
Maja Hellfritzsch, Reimar Wernich Thomsen, Lisbeth Munksgård Baggesen, Finn Breinholt Larsen, Henrik Toft Sørensen, Christian Fynbo Christiansen
BACKGROUND: Observational studies on effectiveness of influenza vaccination in the elderly are thought to be biased by healthier lifestyles and higher socioeconomic status among vaccinated vs. unvaccinated persons. We examined this hypothesis in a uniform tax-supported health care system with free-of-charge influenza vaccination to the elderly. METHODS: We conducted a cross-sectional study among Danes aged 65-79years participating in a survey. We compared elderly persons with and without a recent (within six months) influenza vaccination in terms of (i) lifestyle and socioeconomic characteristics obtained from the survey and (ii) health factors including medical history provided by Danish registries...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343781/sublingual-targeting-of-sting-with-3-3-cgamp-promotes-systemic-and-mucosal-immunity-against-anthrax-toxins
#2
Tara L Martin, Junbae Jee, Eunsoo Kim, Haley E Steiner, Estelle Cormet-Boyaka, Prosper N Boyaka
Anthrax is caused by Bacillus anthracis, a zoonotic bacterial pathogen affecting humans and livestock worldwide. The current human anthrax vaccine, anthrax vaccine adsorbed (AVA), is an injected vaccine with a cumbersome administration schedule and fails to promote mucosal immunity. Bacterial enterotoxins, which stimulate production of the cyclic nucleotide cAMP are effective experimental mucosal vaccine adjuvants, but their inherent toxicity has precluded their use in humans. We investigated whether cyclic dinucleotides that target Stimulator of Interferon Gamma Genes (STING) in mammalian cells could represent an alternative to bacterial enterotoxins as adjuvant for sublingual immunization and promotion of mucosal immunity and secretory IgA responses in addition to systemic immunity...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343780/propagation-of-brazilian-zika-virus-strains-in-static-and-suspension-cultures-using-vero-and-bhk-cells
#3
Alexander Nikolay, Leda R Castilho, Udo Reichl, Yvonne Genzel
The recent spread of Zika virus (ZIKV) in the Americas and the Pacific has reached alarming levels in more than 60 countries. However, relatively little is known about the disease on a virological and epidemiological level and its consequences for humans. Accordingly, a large demand for in vitro derived Brazilian ZIKV material to support in vitro and in vivo studies has arisen. However, a prompt supply of ZIKV and ZIKV antigens cannot be guaranteed as the production of this virus typically using Vero or C6/36 cell lines remains challenging...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343779/antigenic-and-immunogenic-spectrum-of-foot-and-mouth-disease-vaccine-strain-o1-campos-against-representative-viruses-of-topotypes-that-circulated-in-asia-over-the-past-decade
#4
S Galdo Novo, V Malirat, E D Maradei, A M Espinoza, E Smitsaart, A R Pedemonte, N Mattion, I E Bergmann
Identifying vaccine strains to control outbreaks of foot-and-mouth disease virus that could spread to new regions is essential for contingency plans. This is the first report on the antigenic/immunogenic relationships of the South American O1/Campos vaccine strain with representative isolates of the three currently active Asian type O topotypes. Virus neutralization tests using O1/Campos post-vaccination sera derived from cattle and pigs predicted for both species acceptable cross-protection, even after single vaccination, established by r1 values and by expectancy of protection using monovalent or polyvalent vaccines...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343778/rabies-still-a-silent-killer-targeting-the-poor
#5
Henry Wilde, Siriporn Ghai, Thiravat Hemachudha
No abstract text is available yet for this article.
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343777/neisseria-meningitidis-nasopharyngeal-carriage-during-the-hajj-a-cohort-study-evaluating-the-need-for-ciprofloxacin-prophylaxis
#6
Ziad A Memish, Jaffar A Al-Tawfiq, Malak Almasri, Esam I Azhar, Muhammad Yasir, Muneera S Al-Saeed, Huda Ben Helaby, Ray Borrow, Abdulhafeez Turkistani, Abdallah Assiri
BACKGROUND: The annual Muslim pilgrimage has the potential of increase risk for acquisition of Neisseria meningitidis. Here, we evaluate the Hajj impact on the prevalence of N. meningitidis carriage in a paired and non-paired cohort of pilgrims. Secondary objectives were to calculate the compliance with recommended vaccination. METHODS: This is a prospective paired (arriving and departing), non-paired arriving and non-paired departing cohort study with the collection of nasopharyngeal samples at the start and the end of the Hajj...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343776/a-effective-dna-vaccine-against-diverse-genotype-j-infectious-hematopoietic-necrosis-virus-strains-prevalent-in-china
#7
Liming Xu, Jingzhuang Zhao, Miao Liu, Gael Kurath, Guangming Ren, Scott E Lapatra, Jiasheng Yin, Hongbai Liu, Jian Feng, Tongyan Lu
Infectious hematopoietic necrosis virus (IHNV) is the most important pathogen threatening the aquaculture of salmonid fish in China. In this study, a DNA vaccine, designated pIHNch-G, was constructed with the glycoprotein (G) gene of a Chinese IHNV isolate SD-12 (also called Sn1203) of genotype J. The minimal dose of vaccine required, the expression of the Mx-1 gene in the muscle (vaccine delivery site) and anterior kidney, and the titers of the neutralizing antibodies produced were used to evaluate the vaccine efficacy...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343775/lower-vaccine-uptake-amongst-older-individuals-living-alone-a-systematic-review-and-meta-analysis-of-social-determinants-of-vaccine-uptake
#8
REVIEW
Anu Jain, A J van Hoek, Delia Boccia, Sara L Thomas
INTRODUCTION: Vaccination is a key intervention to reduce infectious disease mortality and morbidity amongst older individuals. Identifying social factors for vaccine uptake enables targeted interventions to reduce health inequalities. OBJECTIVE: To systematically appraise and quantify social factors associated with vaccine uptake amongst individuals aged ≥60years from Europe. METHODS: We searched Medline and Embase from inception to 24/02/2016...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343774/immunogenicity-and-safety-of-a-high-dose-hepatitis-b-vaccine-among-patients-receiving-methadone-maintenance-treatment-a-randomized-double-blinded-parallel-controlled-trial
#9
Jing Shi, Yongliang Feng, Linying Gao, Dan Feng, Tian Yao, Shan Shi, Yawei Zhang, Xiaofeng Liang, Suping Wang
BACKGROUND AND AIMS: To explore whether the immunization with high-dose (60μg) hepatitis B vaccines in patients receiving methadone maintenance treatment (MMT) could yield a superior protection against hepatitis B infection than did the standard dose (20μg). METHODS: We conducted a randomized, double-blinded, parallel-controlled trial in MMT patients. Patients with serologically negative hepatitis B surface antigen (HBsAg) and hepatitis B surface antibody (anti-HBs) were randomized in a ratio of 1:1 to receive three intramuscular injections of 20μg or 60μg recombinant hepatitis B vaccine at months 0, 1, and 6...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343773/enhancing-heterologous-protection-in-pigs-vaccinated-with-chimeric-porcine-reproductive-and-respiratory-syndrome-virus-containing-the-full-length-sequences-of-shuffled-structural-genes-of-multiple-heterologous-strains
#10
Debin Tian, Dianjun Cao, C Lynn Heffron, Danielle M Yugo, Adam J Rogers, Christopher Overend, Shannon R Matzinger, Sakthivel Subramaniam, Tanja Opriessnig, Tanya LeRoith, Xiang-Jin Meng
Porcine reproductive and respiratory syndrome virus (PRRSV) is the causative agent of arguably the most economically important global swine disease. The extensive genetic variation of PRRSV strains is a major obstacle for heterologous protection of current vaccines. Previously, we constructed a panel of chimeric viruses containing only the ectodomain sequences of DNA-shuffled structural genes of different PRRSV strains in the backbone of a commercial vaccine, and found that one chimeric virus had an improved cross-protection efficacy...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343772/report-of-the-who-technical-consultation-on-the-effect-of-maternal-influenza-and-influenza-vaccination-on-the-developing-fetus-montreal-canada-september-30-october-1-2015
#11
Deshayne B Fell, Zulfiqar A Bhutta, Jennifer A Hutcheon, Ruth A Karron, Marian Knight, Michael S Kramer, Arnold S Monto, Geeta K Swamy, Justin R Ortiz, David A Savitz
In 2012, the World Health Organization (WHO) released a position paper on influenza vaccination recommending that pregnant women have the highest priority for seasonal vaccination in countries where the initiation or expansion of influenza immunization programs is under consideration. Although the primary goal of the WHO recommendation is to prevent influenza illness in pregnant women, the potential benefits of maternal immunization in protecting young infants are also recognized. The extent to which maternal influenza vaccination may prevent adverse birth outcomes such as preterm birth or small-for-gestational-age birth, however, is unclear as available studies are in disagreement...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343771/characterization-of-human-monoclonal-antibodies-that-neutralize-multiple-poliovirus-serotypes
#12
Rama Devudu Puligedda, Diana Kouiavskaia, Fetweh H Al-Saleem, Chandana Devi Kattala, Usman Nabi, Hamid Yaqoob, V Sandeep Bhagavathula, Rashmi Sharma, Konstantin Chumakov, Scott K Dessain
Following the eradication of wild poliovirus (PV), achieving and maintaining a polio-free status will require eliminating potentially pathogenic PV strains derived from the oral attenuated vaccine. For this purpose, a combination of non-cross-resistant drugs, such as small molecules and neutralizing monoclonal antibodies (mAbs), may be ideal. We previously isolated chimpanzee and human mAbs capable of neutralizing multiple PV types (cross-neutralization). Here, we describe three additional human mAbs that neutralize types 1 and 2 PV and one mAb that neutralizes all three types...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28343770/epidemiology-of-varicella-in-haidian-district-beijing-china-2007-2015
#13
Jiye Fu, Chu Jiang, Juguang Wang, Fengxia Zhao, Tianwei Ma, Rujing Shi, Yanhong Zhao, Xianfeng Zhang
BACKGROUND: 1-Dose varicella vaccination was recommended for children in Beijing before November 2012. To further control school-based outbreaks and decrease incidence, a 2-dose vaccination was implemented in 2013. We described the varicella epidemiology and assessed impact of the 2-dose vaccination in Haidian district, Beijing, 2007-2015. METHODS: We examined the estimated incidence and disease characteristics of varicella during 2007-2015 and obtained the 1-dose vaccination coverage for children born during 2005-2013...
March 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28342669/extended-protection-capabilities-of-an-immature-dendritic-cell-targeting-malaria-sporozoite-vaccine
#14
Kun Luo, Fidel Zavala, James Gordy, Hong Zhang, Richard B Markham
Mouse studies evaluating candidate malaria vaccines have typically examined protective efficacy over the relatively short time frames of several weeks after the final of multiple immunizations. The current study examines the protective ability in a mouse model system of a novel protein vaccine construct in which the adjuvant polyinosinic polycytidilic acid (poly(I:C)) is used in combination with a vaccine in which the immature dendritic cell targeting chemokine, macrophage inflammatory protein 3 alpha (MIP3α), is fused to the circumsporozoite protein (CSP) of Plasmodium falciparum (P...
March 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28342668/the-herd-effects-of-infant-pcv7-pcv13-sequential-implementation-on-adult-invasive-pneumococcal-disease-six-years-post-implementation-a-nationwide-study-in-israel
#15
Gili Regev-Yochay, Michal Katzir, Jacob Strahilevitz, Galia Rahav, Talya Finn, Dan Miron, Yasmin Maor, Bibiana Chazan, Yehudith Schindler, Ron Dagan
BACKGROUND: Introduction of pneumococcal conjugate vaccine (PCV) has nearly eliminated vaccine-type (VT) invasive pneumococcal disease (IPD) in children, yet the reported resulting reduction of adult IPD is variable. We present the indirect impact of sequential PCV7/PCV13 implementation in Israel on adult IPD. METHODS: An ongoing nationwide active surveillance was initiated on July 2009 when PCV7 was implemented (with Catch-up). PCV7 was gradually replaced by PCV13 since November 2010...
March 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28342667/a-fast-and-efficient-purification-platform-for-cell-based-influenza-viruses-by-flow-through-chromatography
#16
Yu-Fen Tseng, Tsai-Chuan Weng, Chia-Chun Lai, Po-Ling Chen, Min-Shi Lee, Alan Yung-Chih Hu
Since newly emerging influenza viruses with pandemic potentials occurred in recent years, the demand for producing pandemic influenza vaccines for human use is high. For the development of a quick and efficient vaccine production, we proposed an efficient purification platform from the harvest to the purified bulk for the cell-based influenza vaccine production. This platform based on flow-through chromatography and filtration steps and the process only involves a few purification steps, including depth filtration, inactivation by formaldehyde, microfiltration, ultrafiltration, anion-exchange and ligand-core chromatography and sterile filtration...
March 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28342666/stabilization-study-of-inactivated-foot-and-mouth-disease-virus-vaccine-by-size-exclusion-hplc-and-differential-scanning-calorimetry
#17
Yanli Yang, Qizu Zhao, Zhengjun Li, Lijing Sun, Guanghui Ma, Songping Zhang, Zhiguo Su
The inactivated foot and mouth disease virus (FMDV), which has a sedimentation coefficient of 146S, is crucial to the efficacy of vaccine preparations, but extremely unstable in vitro. It is prone to dissociate into smaller particles referred to as 12S with a concomitant decrease in immunogenicity; therefore, it is of great importance to find the best condition for stabilizing the FMDV. In the present work, the effects of solution pH and temperature on the dissociation of 146S was investigated and potential stabilizers were screened, with aid of high-performance size-exclusion chromatography (HPSEC) for rapid and quantitative determination of 146S, together with differential scanning calorimetry (DSC) technology for thermal stability analysis...
March 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28342665/recombinant-newcastle-disease-virus-expressing-the-infectious-bronchitis-virus-s1-gene-protects-chickens-against-newcastle-disease-virus-and-infectious-bronchitis-virus-challenge
#18
Ran Zhao, Junfeng Sun, Tianming Qi, Wen Zhao, Zongxi Han, Xiaopu Yang, Shengwang Liu
The recombinant LaSota strain expressing a chimeric IBV S1 gene (rLaSota-S1) was constructed with the S1 gene of the LX4 type IBV ck/CH/LDL/091022. The expression of the S1 protein was detected by an indirect immunofluorescence assay and Western blotting. The rLaSota-S1 strain was slightly attenuated, and its growth dynamics were similar to that of the parental LaSota strain. Vaccination of specific pathogen-free chickens with the rLaSota-S1 strain induced NDV hemagglutination inhibition antibodies, and it protected chickens from challenge with virulent NDV...
March 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28342664/a-novel-live-attenuated-anthrax-spore-vaccine-based-on-an-acapsular-bacillus-anthracis-sterne-strain-with-mutations-in-the-htra-lef-and-cya-genes
#19
Theodor Chitlaru, Ma'ayan Israeli, Shahar Rotem, Uri Elia, Erez Bar-Haim, Sharon Ehrlich, Ofer Cohen, Avigdor Shafferman
We recently reported the development of a novel, next-generation, live attenuated anthrax spore vaccine based on disruption of the htrA (High Temperature Requirement A) gene in the Bacillus anthracis Sterne veterinary vaccine strain. This vaccine exhibited a highly significant decrease in virulence in murine, guinea pig and rabbit animal models yet preserved the protective value of the parental Sterne strain. Here, we report the evaluation of additional mutations in the lef and cya genes, encoding for the toxin components lethal factor (LF) and edema factor (EF), to further attenuate the SterneΔhtrA strain and improve its compatibility for human use...
March 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28341115/fewer-out-of-sequence-vaccinations-and-reduction-of-child-mortality-in-northern-ghana
#20
Paul Welaga, Abraham Oduro, Cornelius Debpuur, Peter Aaby, Henrik Ravn, Andreas Andersen, Fred Binka, Abraham Hodgson
BACKGROUND: Studies suggest that diphtheria-tetanus-pertussis (DTP) vaccine administered simultaneously with measles vaccine (MV) or DTP administered after MV are associated with higher child mortality than having MV-after-DTP3 as most recent vaccination. We tested this in Northern Ghana where the prevalence of such out-of-sequence vaccinations has declined. METHODS: Using annual cohort data of children aged 12-23months from 1996 to 2012 and Cox proportional hazards models, we assessed survival in relation to the most recent vaccination status within the next 12months and until five years of age...
March 21, 2017: Vaccine
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