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https://www.readbyqxmd.com/read/28329167/repeated-vaccination-does-not-appear-to-impact-on-influenza-vaccine-effectiveness-against-hospitalisation-with-confirmed-influenza
#1
Allen C Cheng, Kristine K Macartney, Grant W Waterer, Tom Kotsimbos, Paul M Kelly, Christopher C Blyth
Background: Annual influenza vaccine is recommended for those at greatest risk of severe influenza infection. Recent reports of a negative impact of serial influenza vaccination on vaccine effectiveness raises concerns about the recommendation for annual influenza vaccines, particularly in those at greatest risk. Methods: The Influenza Complications Alert Network (FluCAN) is an Australian hospital-based sentinel surveillance program. In this observational study, cases were defined as subjects >9 years admitted with influenza confirmed by PCR...
March 17, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28328957/differential-effects-of-deae-negative-mode-chromatography-and-gel-filtration-chromatography-on-the-charge-status-of-helicobacter-pylori-neutrophil-activating-protein
#2
Zhi-Wei Hong, Yu-Chi Yang, Timothy Pan, Huey-Fen Tzeng, Hua-Wen Fu
Helicobacter pylori neutrophil-activating protein (HP-NAP) is involved in H. pylori-associated gastric inflammation. HP-NAP is also a vaccine candidate, a possible drug target, and a potential diagnostic marker for H. pylori-associated diseases. Previously, we purified recombinant HP-NAP by one-step diethylaminoethyl (DEAE) negative mode chromatography by collecting the unbound fraction at pH 8.0 at 4°C. It remains unclear why HP-NAP does not bind to DEAE resins at the pH above its isoelectric point during the purification...
2017: PloS One
https://www.readbyqxmd.com/read/28322167/hiv-specific-adcc-new-technologies-to-study-adcc-and-importance-for-the-hiv-vaccine-field
#3
Bruce D Wines, Hugh Billings, Milla R Mclean, Stephen J Kent, P Mark Hogarth
There is now intense interest in the role of HIV-specific antibodies and the engagement of FcγR functions in the control and prevention of HIV infection. The RV144 vaccine study, natural progression cohorts, and macaque studies all point to a role for antibody dependent cellular cytotoxicity (ADCC) in the control of HIV. However, reliable assays that can be reproducibly used across different laboratories to measure ADCC and other Fc-dependent functions of antibodies are limited. We recently developed a novel ELISA-based assay to detect the binding of viral antigen-specific antibodies to the ectodomains of homo-dimeric Fcγ receptors...
March 20, 2017: Current HIV Research
https://www.readbyqxmd.com/read/28320973/structure-of-the-infectious-salmon-anemia-virus-receptor-complex-illustrates-a-unique-binding-strategy-for-attachment
#4
Jonathan D Cook, Azmiri Sultana, Jeffrey E Lee
Orthomyxoviruses are an important family of RNA viruses, which include the various influenza viruses. Despite global efforts to eradicate orthomyxoviral pathogens, these infections remain pervasive. One such orthomyxovirus, infectious salmon anemia virus (ISAV), spreads easily throughout farmed and wild salmonids, constituting a significant economic burden. ISAV entry requires the interplay of the virion-attached hemagglutinin-esterase and fusion glycoproteins. Preventing infections will rely on improved understanding of ISAV entry...
March 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28314047/the-role-of-risk-perception-in-flu-vaccine-behavior-among-african-american-and-white-adults-in-the-united-states
#5
Vicki S Freimuth, Amelia Jamison, Gregory Hancock, Donald Musa, Karen Hilyard, Sandra Crouse Quinn
Seasonal flu vaccination rates are low for U.S. adults, with significant disparities between African and white Americans. Risk perception is a significant predictor of vaccine behavior but the research on this construct has been flawed. This study addressed critical research questions to understand the differences between African and white Americans in the role of risk perception in flu vaccine behavior: (1) What is the dimensionality of risk perception and does it differ between the two races?  (2) Were risk perceptions of white and African-American populations different and how were sociodemographic characteristics related to risk for each group? (3) What is the relation between risk perception and flu vaccine behaviors for African Americans and whites? The sample, drawn from GfK's Knowledge Panel, consisted of 838 whites and 819 African Americans...
March 17, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28303214/evidence-based-management-and-controversies-in-blunt-splenic-trauma
#6
REVIEW
D C Olthof, C H van der Vlies, J C Goslings
PURPOSE OF REVIEW: The study aims to describe the evidence-based management and controversies in blunt splenic trauma. RECENT FINDINGS: A shift from operative management to non-operative management (NOM) has occurred over the past decades where NOM has now become the standard of care in haemodynamically stable patients with blunt splenic injury. Splenic artery embolisation (SAE) is generally believed to increase the success rate of NOM. Not all the available evidence is that optimistic about SAE however...
2017: Current Trauma Reports
https://www.readbyqxmd.com/read/28302351/does-a-primary-health-clinic-for-formerly-incarcerated-women-increase-linkage-to-care
#7
Diane S Morse, John L Wilson, James M McMahon, Ann M Dozier, Anabel Quiroz, Catherine Cerulli
OBJECTIVE: This study examined a primary care-based program to address the health needs of women recently released from incarceration by facilitating access to primary medical, mental health, and substance use disorder (SUD) treatment. STUDY DESIGN: Peer community health workers recruited women released from incarceration within the past 9 months into the Women's Initiative Supporting Health Transitions Clinic (WISH-TC). Located within an urban academic medical center, WISH-TC uses cultural, gender, and trauma-specific strategies grounded in the self-determination theory of motivation...
March 13, 2017: Women's Health Issues: Official Publication of the Jacobs Institute of Women's Health
https://www.readbyqxmd.com/read/28295265/card9-controls-dectin-1-induced-t-cell-cytotoxicity-and-tumor-growth-in-mice
#8
Haas Tobias, Heidegger Simon, Wintges Alexander, Bscheider Michael, Bek Sarah, Fischer Julius C, Eisenkolb Gabriel, Schmickl Martina, Spoerl Silvia, Peschel Christian, Poeck Hendrik, Ruland Jürgen
Activation of the C-type lectin receptor Dectin-1 by β-glucans triggers multiple signals within dendritic cells (DCs) that result in activation of innate immunity. While these mechanisms can potently prime CD8(+) cytotoxic T cell (CTL) responses without additional adjuvants, the Dectin-1 effector pathways that control CTL induction remain unclear. Here we demonstrate that Dectin-1-induced CTL cross-priming in mice does not require inflammasome activation but strictly depends on the adapter protein Card9 in vitro...
March 10, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28291646/does-seasonal-vaccination-affect-the-clinical-presentation-of-influenza-among-the-elderly-a-cross-sectional-analysis-in-the-outpatient-setting-in-france-2003-2014
#9
Anne Mosnier, Isabelle Daviaud, Saverio Caini, Hervé Berche, Jean-Michel Mansuy, Sylvie van der Werf, Jean Marie Cohen, Bruno Lina
Vaccine-induced protection against influenza is not optimal, however it has been suggested that the vaccine may reduce the severity of symptoms among those who develop illness despite being vaccinated. We tested this hypothesis within a countrywide, sentinel general practitioners-based surveillance system in France. We included 2277 individuals aged 65years or older (of whom 1293 had been vaccinated against influenza, 56.8%) who consulted a general practitioner because of an acute respiratory infection (ARI) during 2003-2014...
March 10, 2017: Vaccine
https://www.readbyqxmd.com/read/28291048/antibody-responses-to-quadrivalent-hpv-vaccination-in-hiv-infected-young-women-as-measured-by-total-igg-and-competitive-luminex-immunoassay
#10
Jessica Kahn, Jiahong Xu, Bill G Kapogiannis, John W Sleasman
We compared antibody responses of HIV-infected young women to the HPV6, 11, 16, 18 vaccine using total IgG LIA and cLIA assays. HPV18 seropositivity after HPV vaccination as measured with IgG LIA remained high (98%) 48 weeks after vaccination, in contrast with seropositivity as measured with cLIA (73%). Seropositivity rates at week 48 as measured by both IgG LIA and cLIA remained high for HPV6, 11 and 16 (93.5-100%). These results suggest that the lower rate of seropositivity to HPV18 when cLIA vs. IgG LIA is used is a function of the assay, and does not imply lower vaccine immunogenicity...
March 10, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28290951/pneumonia-at-marine-corps-recruit-depots-current-trends-in-ambulatory-encounters-and-inpatient-discharges
#11
Kristen Rossi, Gosia Nowak, Asha Jindal Riegodedios
BACKGROUND: Acute respiratory infections are recognized as a significant source of morbidity for military populations, particularly for recruits. This analysis aims to describe the pneumonia burden at Marine Corps Recruit Depots (MCRD) in Parris Island and San Diego during 2007-2014, as these two depots maintain noteworthy comparisons in vaccine and prophylaxis policies. First, both depots reinstated the adenovirus vaccine in October 2011. Second, San Diego provides the pneumococcal polysaccharide vaccine to all recruits within the first 2 days of arrival, although Parris Island does not routinely vaccinate for Streptococcus pneumoniae...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28289059/what-is-wrong-with-pertussis-vaccine-immunity-why-immunological-memory-to-pertussis-is-failing
#12
Dimitri A Diavatopoulos, Kathryn Margaret Edwards
Memory responses seen after whole-cell pertussis (wP) and acellular pertussis (aP) vaccine priming are different and reflect better long-term protection against pertussis disease seen with the whole-cell vaccines. Although acellular vaccines generate higher levels of antigen-specific IgG to the antigens included in the aP vaccines, there are many more pertussis antigens included in whole-cell vaccines. Acellular vaccine priming is associated with skewing of the immune response to a more Th2-like response, whereas whole-cell priming is associated with a Th1/Th17 response...
March 13, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28288639/rhesus-macaque-and-mouse-models-for-down-selecting-circumsporozoite-protein-based-malaria-vaccines-differ-significantly-in-immunogenicity-and-functional-outcomes
#13
Timothy W Phares, Anthony D May, Christopher J Genito, Nathan A Hoyt, Farhat A Khan, Michael D Porter, Margot DeBot, Norman C Waters, Philippe Saudan, Sheetij Dutta
BACKGROUND: Non-human primates, such as the rhesus macaques, are the preferred model for down-selecting human malaria vaccine formulations, but the rhesus model is expensive and does not allow for direct efficacy testing of human malaria vaccines. Transgenic rodent parasites expressing genes of human Plasmodium are now routinely used for efficacy studies of human malaria vaccines. Mice have however rarely predicted success in human malaria trials and there is scepticism whether mouse studies alone are sufficient to move a vaccine candidate into the clinic...
March 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28285585/searching-for-lyme-borreliosis-in-australia-results-of-a-canine-sentinel-study
#14
Peter J Irwin, Ian D Robertson, Mark E Westman, Martine Perkins, Reinhard K Straubinger
BACKGROUND: Lyme borreliosis is a common tick-borne disease of the northern hemisphere that is caused by bacterial spirochaetes of the Borrelia burgdorferi (sensu lato) (Bbsl) complex. To date, there has been no convincing evidence for locally-acquired Lyme borreliosis on the Australian continent and there is currently a national debate concerning the nature and distributions of zoonotic tick-transmitted infectious disease in Australia. In studies conducted in Europe and the United States, dogs have been used as sentinels for tick-associated illness in people since they readily contact ticks that may harbour zoonotic pathogens...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28284628/japanese-encephalitis-virus-infection-diagnosis-and-control-in-domestic-animals
#15
REVIEW
Karen L Mansfield, Luis M Hernández-Triana, Ashley C Banyard, Anthony R Fooks, Nicholas Johnson
Japanese encephalitis virus (JEV) is a significant cause of neurological disease in humans throughout Asia causing an estimated 70,000 human cases each year with approximately 10,000 fatalities. The virus contains a positive sense RNA genome within a host-derived membrane and is classified within the family Flaviviridae. Like many flaviviruses, it is transmitted by mosquitoes, particularly those of the genus Culex in a natural cycle involving birds and some livestock species. Spill-over into domestic animals results in a spectrum of disease ranging from asymptomatic infection in some species to acute neurological signs in others...
March 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28278244/structure-of-salo-a-leishmaniasis-vaccine-candidate-from-the-sand-fly-lutzomyia-longipalpis
#16
Oluwatoyin A Asojo, Alan Kelleher, Zhuyun Liu, Jeroen Pollet, Elissa M Hudspeth, Wanderson C Rezende, Mallory Jo Groen, Christopher A Seid, Maha Abdeladhim, Shannon Townsend, Waldione de Castro, Antonio Mendes-Sousa, Daniella Castanheira Bartholomeu, Ricardo Toshio Fujiwara, Maria Elena Bottazzi, Peter J Hotez, Bin Zhan, Fabiano Oliveira, Shaden Kamhawi, Jesus G Valenzuela
BACKGROUND: Immunity to the sand fly salivary protein SALO (Salivary Anticomplement of Lutzomyia longipalpis) protected hamsters against Leishmania infantum and L. braziliensis infection and, more recently, a vaccine combination of a genetically modified Leishmania with SALO conferred strong protection against L. donovani infection. Because of the importance of SALO as a potential component of a leishmaniasis vaccine, a plan to produce this recombinant protein for future scale manufacturing as well as knowledge of its structural characteristics are needed to move SALO forward for the clinical path...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28266565/preclinical-evaluation-of-multi-antigenic-hcv-dna-vaccine-for-the-prevention-of-hepatitis-c-virus-infection
#17
Hyojin Lee, Moonsup Jeong, Jooyeon Oh, Youngran Cho, Xuefei Shen, John Stone, Jian Yan, Zachary Rothkopf, Amir S Khan, Byung Mun Cho, Young K Park, David B Weiner, Woo-Chan Son, Joel N Maslow
Direct-acting antiviral treatment for hepatitis C virus (HCV) infection is costly and does not protect from re-infection. For human and chimpanzees, recovery from acute HCV infection correlates with host CD4+ and CD8+ T cell responses. DNA plasmids targeting the HCV non-structural antigens NS3, NS4, and NS5, were previously reported to induce robust and sustained T cell responses in mice and primates. These plasmids were combined with a plasmid encoding cytokine IL-28B, together named as VGX-6150. The dose-dependent T cell response and safety of VGX-6150 administered intramuscularly and followed by electroporation was assessed in mice...
March 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28266264/development-of-chronic-hepatitis-b-infection-in-a-hepatitis-b-vaccine-responder
#18
Corinna Sadlier, Keeva Madden, Sean O'Gorman, Brendan Crowley, Colm Bergin
The Hepatitis B vaccine is highly effective for the prevention of hepatitis B (HBV) infection. We report the development of chronic HBV infection (Genotype F) in a vaccinated immunocompetent individual with an anti-HBsAb of 35 mIU/mL post completion of vaccine series. HBV vaccine is based on recombinant proteins of genotype-A and D (predominant genotypes in Europe). It may not be as effective for the prevention of more genetically diverse viruses such as genotype F (predominant genotype in Central and South America)...
April 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28266226/why-have-the-majority-of-recent-polio-cases-occurred-in-countries-affected-by-islamist-militancy-a-historical-comparative-analysis-of-the-political-determinants-of-polio-in-nigeria-somalia-pakistan-afghanistan-and-syria
#19
Jonathan Kennedy
This article aims to understand why the last few areas where polio remains are affected by armed conflicts involving militant organizations that use Islam to legitimize their activities. The first section critically analyses the argument that Muslims' animosity towards polio vaccination programmes is a consequence of their irrational, backward, anti-Western theology. This argument is depoliticizing, ahistorical and orientalist. Moreover, it does not explain why Islamist militant groups' attitudes to polio vaccination campaigns vary between countries...
March 7, 2017: Medicine, Conflict, and Survival
https://www.readbyqxmd.com/read/28264682/an-engineered-food-grade-lactococcus-lactis-strain-for-production-and-delivery-of-heat-labile-enterotoxin-b-subunit-to-mucosal-sites
#20
Nan Sun, Rongguang Zhang, Guangcai Duan, Xiaoyan Peng, Chen Wang, Qingtang Fan, Shuaiyin Chen, Yuanlin Xi
BACKGROUND: Recent researches have been focusing on mucosal immune adjuvants, which play the key roles in mucosal immunization and have become the limitation for non-injected vaccine development. Escherichia coli heat-labile enterotoxin B subunit (LTB) was regarded as a promising mucosal adjuvant for its nontoxicity and potent activity. LTB preparation issues have always been recurring, in part owing to that the recombinant LTB expressed by E. coli does not act as its native form. RESULTS: We constructed an engineered Lactococcus lactis strain using a food-grade expression system...
March 6, 2017: BMC Biotechnology
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