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vaccine; immunization; immunisation

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https://www.readbyqxmd.com/read/28061843/sun-protection-to-improve-vaccine-effectiveness-in-children-in-a-high-ambient-ultraviolet-radiation-and-rural-environment-an-intervention-study
#1
Caradee Y Wright, Patricia N Albers, Angela Mathee, Zamantimande Kunene, Catherine D'Este, Ashwin Swaminathan, Robyn M Lucas
BACKGROUND: Vaccination is a mainstay of preventive healthcare, reducing the incidence of serious childhood infections. Ecological studies have demonstrated an inverse association between markers of high ambient ultraviolet (UV) radiation exposure (e.g., sunny season, low latitude of residence) and reduction in the vaccination-associated immune response. Higher sun exposure on the day prior to and spanning the day of vaccination has been associated with a reduced antigen-specific immune response independent of skin pigmentation...
January 6, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28017642/immunity-duration-of-a-recombinant-adenovirus-type-5-vector-based-ebola-vaccine-and-a-homologous-prime-boost-immunisation-in-healthy-adults-in-china-final-report-of-a-randomised-double-blind-placebo-controlled-phase-1-trial
#2
Jing-Xin Li, Li-Hua Hou, Fan-Yue Meng, Shi-Po Wu, Yue-Mei Hu, Qi Liang, Kai Chu, Zhe Zhang, Jun-Jie Xu, Rong Tang, Wen-Juan Wang, Pei Liu, Jia-Lei Hu, Li Luo, Rong Jiang, Feng-Cai Zhu, Wei Chen
BACKGROUND: The 2013-15 Ebola virus disease epidemic in west Africa greatly accelerated the development of Ebola vaccine. We aimed to analyse the immune persistence induced by one shot of an adenovirus type-5 vector-based Ebola virus vaccine up to 6 months and the effect of boosting with a homologous vector in healthy adults in China. METHODS: In a randomised, double-blind, placebo-controlled, phase 1 clinical trial in one site in Jiangsu Province, China, 120 healthy adults aged 18-60 years received an initial dose of intramuscular adenovirus type-5 Ebola virus vaccine of 4·0 × 10(10) viral particles, 1·6 × 10(11) viral particles, or placebo, and were followed up to day 168...
December 22, 2016: Lancet Global Health
https://www.readbyqxmd.com/read/28002473/role-of-occult-and-post-acute-phase-replication-in-protective-immunity-induced-with-a-novel-live-attenuated-siv-vaccine
#3
Neil Berry, Maria Manoussaka, Claire Ham, Deborah Ferguson, Hannah Tudor, Giada Mattiuzzo, Bep Klaver, Mark Page, Richard Stebbings, Atze T Das, Ben Berkhout, Neil Almond, Martin P Cranage
In order to evaluate the role of persisting virus replication during occult phase immunisation in the live attenuated SIV vaccine model, a novel SIVmac239Δnef variant (SIVrtTA) genetically engineered to replicate in the presence of doxycycline was evaluated for its ability to protect against wild-type SIVmac239. Indian rhesus macaques were vaccinated either with SIVrtTA or with SIVmac239Δnef. Doxycycline was withdrawn from 4 of 8 SIVrtTA vaccinates before challenge with wild-type virus. Unvaccinated challenge controls exhibited ~107 peak plasma viral RNA copies/ml persisting beyond the acute phase...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27996000/central-role-of-cd169-lymph-node-resident-macrophages-in-the-adjuvanticity-of-the-qs-21-component-of-as01
#4
Sophie Detienne, Iain Welsby, Catherine Collignon, Sandrine Wouters, Margherita Coccia, Sophie Delhaye, Laurye Van Maele, Séverine Thomas, Maëlle Swertvaegher, Aurélie Detavernier, Abdelatif Elouahabi, Stanislas Goriely, Arnaud M Didierlaurent
Saponins represent a promising class of vaccine adjuvant. Together with the TLR4-ligand MPL, QS-21 is part of the Adjuvant System AS01, a key component of the malaria and zoster candidate vaccines that display demonstrated clinical efficacy. However, the mechanism of action of QS-21 in this liposomal formulation is poorly understood. Upon intra-muscular immunisation, we observed that QS-21 rapidly accumulated in CD169(+) resident macrophages of the draining lymph node where it elicited a local innate immune response...
December 20, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27983680/node-immunization-with-time-sensitive-restrictions
#5
Wen Cui, Xiaoqing Gong, Chen Liu, Dan Xu, Xiaojiang Chen, Dingyi Fang, Shaojie Tang, Fan Wu, Guihai Chen
When we encounter a malicious rumor or an infectious disease outbreak, immunizing k nodes of the relevant network with limited resources is always treated as an extremely effective method. The key challenge is how we can insulate limited nodes to minimize the propagation of those contagious things. In previous works, the best k immunised nodes are selected by learning the initial status of nodes and their strategies even if there is no feedback in the propagation process, which eventually leads to ineffective performance of their solutions...
December 15, 2016: Sensors
https://www.readbyqxmd.com/read/27938685/up-regulation-of-il-10-upon-prrsv-vaccination-impacts-on-the-immune-response-against-csfv
#6
Xinglong Wang, Guohui Mu, Ruiyi Dang, Zengqi Yang
Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) infection negatively impacts the efficacy of classical swine fever virus (CSFV) vaccine. This paper investigates whether the PRRSV vaccine also impacts the CSFV vaccine and if the impact is time-related. Forty-eight piglets born from four sows were divided into five groups (G1-G5). The piglets in G1 to G4 were given PRRSV vaccine at 14, 21, 28 and 35days of age. The G5 group was not vaccinated with the PRRSV. All pigs were given the CSFV vaccine at 35days of age...
December 25, 2016: Veterinary Microbiology
https://www.readbyqxmd.com/read/27914741/maternal-bcg-scar-is-associated-with-increased-infant-proinflammatory-immune-responses
#7
Patrice Akusa Mawa, Emily L Webb, Abdelali Filali-Mouhim, Gyaviira Nkurunungi, Rafick-Pierre Sekaly, Swaib Abubaker Lule, Sarah Prentice, Stephen Nash, Hazel M Dockrell, Alison M Elliott, Stephen Cose
INTRODUCTION: Prenatal exposures such as infections and immunisation may influence infant responses. We had an opportunity to undertake an analysis of innate responses in infants within the context of a study investigating the effects of maternal mycobacterial exposures and infection on BCG vaccine-induced responses in Ugandan infants. MATERIAL AND METHODS: Maternal and cord blood samples from 29 mother-infant pairs were stimulated with innate stimuli for 24h and cytokines and chemokines in supernatants were measured using the Luminex® assay...
January 5, 2017: Vaccine
https://www.readbyqxmd.com/read/27885052/enhanced-protective-responses-to-a-serotype-independent-pneumococcal-vaccine-when-combined-with-an-inactivated-influenza-vaccine
#8
Rachelle Babb, Austen Chen, Abiodun D Ogunniyi, Timothy R Hirst, Ervin E Kara, Shaun R McColl, Mohammed Alsharifi, James C Paton
Streptococcus pneumoniae and influenza are the world's foremost bacterial and viral respiratory pathogens. We have previously described a γ-irradiated influenza A virus (γ-FLU) vaccine that provides cross-protective immunity against heterosubtypic infections. More recently, we reported a novel non-adjuvanted γ-irradiated S pneumoniae (γ-PN) vaccine that elicits serotype-independent protection. Considering the clinical synergism of both pathogens, combination of a serotype-independent pneumococcal vaccine with a broad-spectrum influenza vaccine to protect against both infections would have a considerable clinical impact...
January 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/27876197/vaccination-of-special-populations-protecting-the-vulnerable
#9
REVIEW
Mark Doherty, Ruprecht Schmidt-Ott, Jose Ignacio Santos, Lawrence R Stanberry, Annika M Hofstetter, Susan L Rosenthal, Anthony L Cunningham
One of the strategic objectives of the 2011-2020 Global Vaccine Action Plan is for the benefits of immunisation to be equitably extended to all people. This approach encompasses special groups at increased risk of vaccine-preventable diseases, such as preterm infants and pregnant women, as well as those with chronic and immune-compromising medical conditions or at increased risk of disease due to immunosenescence. Despite demonstrations of effectiveness and safety, vaccine uptake in these special groups is frequently lower than expected, even in developed countries with vaccination strategies in place...
December 20, 2016: Vaccine
https://www.readbyqxmd.com/read/27866766/age-specific-effectiveness-following-each-dose-of-acellular-pertussis-vaccine-among-infants-and-children-in-new-zealand
#10
Sarah Radke, Helen Petousis-Harris, Donna Watson, Dudley Gentles, Nikki Turner
BACKGROUND: Though it is believed the switch from whole cell to acellular pertussis vaccine has contributed to the resurgence of pertussis disease, few studies have evaluated vaccine effectiveness (VE) and duration of protection provided by an acellular vaccine schedule including three primary doses but no toddler-age dose. We assessed this schedule in New Zealand (NZ), a setting with historically high rates of pertussis disease, and low but recently improved immunisation coverage. We further evaluated protection following the preschool-age booster dose...
January 3, 2017: Vaccine
https://www.readbyqxmd.com/read/27862309/study-of-greek-children-and-youths-with-cystic-fibrosis-identifies-immunisation-gaps-and-delays
#11
Helena C Maltezou, Stavros Doudounakis, Maria Lekaditi, Kalliopi Tanou, Panos Katerelos, Maria Theodoridou
AIM: Data about immunisation rates in cystic fibrosis (CF) patients are scarce. We estimated the rates and timeliness of immunisations in CF patients aged 0.55-22 years. METHODS: We studied 122 subjects at a hospital in Greece in 2014. A standard questionnaire was used to collect data and parents' opinions about immunisations. RESULTS: The complete immunisation rates were 92.6% for diphtheria-tetanus-acellular pertussis-inactivated poliomyelitis-Haemophilus influenzae (DTaP-IPV-Hib), 96...
November 10, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27855374/inflammatory-properties-and-adjuvant-potential-of-synthetic-glycolipids-homologous-to-mycolate-esters-of-the-cell-wall-of-mycobacterium-tuberculosis
#12
Hermann Giresse Tima, Juma''a Raheem Al Dulayymi, Olivier Denis, Pauline Lehebel, Klarah Sherzad Baols, Mohsin Omar Mohammed, Laurent L'Homme, Mohaned Mohammed Sahb, Georges Potemberg, Sylvie Legrand, Roland Lang, Rudi Beyaert, Jacques Piette, Mark Stephen Baird, Kris Huygen, Marta Romano
The cell wall of mycobacteria is characterised by glycolipids composed of different classes of mycolic acids (MAs; alpha-, keto-, and methoxy-) and sugars (trehalose, glucose, and arabinose). Studies using mutant Mtb strains have shown that the structure of MAs influences the inflammatory potential of these glycolipids. As mutant Mtb strains possess a complex mixture of glycolipids, we analysed the inflammatory potential of single classes of mycolate esters of the Mtb cell wall using 38 different synthetic analogues...
November 18, 2016: Journal of Innate Immunity
https://www.readbyqxmd.com/read/27814377/antibody-persistence-and-booster-responses-to-split-virion-h5n1-avian-influenza-vaccine-in-young-and-elderly-adults
#13
Rajeka Lazarus, Sarah Kelly, Matthew D Snape, Corinne Vandermeulen, Merryn Voysey, Karel Hoppenbrouwers, Annick Hens, Pierre Van Damme, Stephanie Pepin, Isabel Leroux-Roels, Geert Leroux-Roels, Andrew J Pollard
: Avian influenza continues to circulate and remains a global health threat not least because of the associated high mortality. In this study antibody persistence, booster vaccine response and cross-clade immune response between two influenza A(H5N1) vaccines were compared. Participants aged over 18-years who had previously been immunized with a clade 1, A/Vietnam vaccine were re-immunized at 6-months with 7.5 μg of the homologous strain or at 22-months with a clade 2, alum-adjuvanted, A/Indonesia vaccine...
2016: PloS One
https://www.readbyqxmd.com/read/27800206/immune-complex-mediated-glomerulonephritis-with-acute-thrombotic-microangiopathy-following-newly-detected-hepatitis-b-virus-infection-in-a-kidney-transplant-recipient
#14
Tracey Salter, Hannah Burton, Sam Douthwaite, William Newsholme, Catherine Horsfield, Rachel Hilton
Hepatitis B virus (HBV) presents a risk to patients and staff in renal units. To minimise viral transmission, there are international and UK guidelines recommending HBV immunisation for patients commencing renal replacement therapy (RRT) and HBV surveillance in kidney transplant recipients. We report the case of a 56-year-old male who was immunised against HBV before starting haemodialysis. He received a deceased donor kidney transplant three years later, at which time there was no evidence of HBV infection...
2016: Case Reports in Transplantation
https://www.readbyqxmd.com/read/27797937/induction-of-humoural-and-cellular-immunity-by-immunisation-with-hcv-particle-vaccine-in-a-non-human-primate-model
#15
Hiroshi Yokokawa, Atsunori Higashino, Saori Suzuki, Masaki Moriyama, Noriko Nakamura, Tomohiko Suzuki, Ryosuke Suzuki, Koji Ishii, Kouji Kobiyama, Ken J Ishii, Takaji Wakita, Hirofumi Akari, Takanobu Kato
OBJECTIVE: Although HCV is a major cause of chronic liver disease worldwide, there is currently no prophylactic vaccine for this virus. Thus, the development of an HCV vaccine that can induce both humoural and cellular immunity is urgently needed. To create an effective HCV vaccine, we evaluated neutralising antibody induction and cellular immune responses following the immunisation of a non-human primate model with cell culture-generated HCV (HCVcc). DESIGN: To accomplish this, 10 common marmosets were immunised with purified, inactivated HCVcc in combination with two different adjuvants: the classically used aluminum hydroxide (Alum) and the recently established adjuvant: CpG oligodeoxynucleotide (ODN) wrapped by schizophyllan (K3-SPG)...
October 26, 2016: Gut
https://www.readbyqxmd.com/read/27781101/cytomegalovirus-vaccines-under-clinical-development
#16
EDITORIAL
Mark R Schleiss
Congenital cytomegalovirus (CMV) infection is the most common infectious cause of disability in newborn infants. CMV also causes serious disease in solid organ (SOT) and haematopoietic stem cell transplant (HSCT) recipients. In otherwise healthy children and adults, primary CMV infection rarely causes illness. However, even asymptomatic CMV infections may predispose an individual towards an increased risk of atherosclerosis, cancer and immune senescence over the life course, although such associations remain controversial...
October 5, 2016: Journal of Virus Eradication
https://www.readbyqxmd.com/read/27780630/effect-of-tdap-when-administered-before-with-or-after-the-13-valent-pneumococcal-conjugate-vaccine-coadministered-with-the-quadrivalent-meningococcal-conjugate-vaccine-in-adults-a-randomised-controlled-trial
#17
M Tashani, M Alfelali, O Barasheed, A S Alqahtani, L Heron, M Wong, H Rashid, R Booy
Sequential or co-administration of vaccines has potential to alter the immune response to any of the antigens. Existing literature suggests that prior immunisation of tetanus/diphtheria-containing vaccines can either enhance or suppress immune response to conjugate pneumococcal or meningococcal vaccines. We examined this interaction among adult Australian travellers before attending the Hajj pilgrimage 2014. We also investigated tolerability of these vaccines separately and concomitantly. We randomly assigned each participant to one of three vaccination schedules...
October 22, 2016: Vaccine
https://www.readbyqxmd.com/read/27769596/vaccine-development-from-concept-to-early-clinical-testing
#18
Anthony L Cunningham, Nathalie Garçon, Oberdan Leo, Leonard R Friedland, Richard Strugnell, Béatrice Laupèze, Mark Doherty, Peter Stern
In the 21st century, an array of microbiological and molecular allow antigens for new vaccines to be specifically identified, designed, produced and delivered with the aim of optimising the induction of a protective immune response against a well-defined immunogen. New knowledge about the functioning of the immune system and host pathogen interactions has stimulated the rational design of vaccines. The design toolbox includes vaccines made from whole pathogens, protein subunits, polysaccharides, pathogen-like particles, use of viral/bacterial vectors, plus adjuvants and conjugation technology to increase and broaden the immune response...
December 20, 2016: Vaccine
https://www.readbyqxmd.com/read/27759768/immune-response-in-hamsters-immunised-with-a-recombinant-fragment-of-liga-from-leptospira-interrogans-associated-with-carrier-molecules
#19
Thaís L Oliveira, Kátia L Bacelo, Rodrigo A Schuch, Fabiana K Seixas, Tiago Collares, Oscar Ed Rodrigues, Josimar Vargas, Rafaella O do Nascimento, Odir A Dellagostin, Daiane D Hartwig
Immunisation with the C-terminal region of leptospiral immunoglobulin-like A protein (LigANI) has shown promising results against leptospirosis. We evaluated the humoral immune response and protection induced by LigANI associated with carboxyl multi-walled carbon nanotubes (COOH-MWCNTs), CpG oligodeoxynucleotides (CpG ODNs), or Alhydrogel. Animals immunised with CpG ODNs were unable to develop a humoral immune response, whereas immunisation with LigANI and COOH-MWCNTs produced a high level of IgG antibodies, similar to that with LigANI and Alhydrogel, but it was not protective...
November 2016: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/27742446/recombinant-canine-adenovirus-type-2-expressing-tgrop16-provides-partial-protection-against-acute-toxoplasma-gondii-infection-in-mice
#20
Xiu-Zhen Li, Lin Lv, Xu Zhang, Kenneth Yongabi Anchang, Auwalu Yusuf Abdullahi, Liqing Tu, Xiaohu Wang, Lijun Xia, Xiu-Xiang Zhang, Weili Feng, Chunxia Lu, Shoujun Li, Zi-Guo Yuan
We previously demonstrated that the survival time of BALB/c mice challenged with Toxoplasma gondii RH strain was prolonged by immunising the mice with a eukaryotic vector expressing the protein ROP16 of T. gondii. Building upon previous findings, we are exploring improved vaccination strategies to enhance protection. In this work, a novel recombinant canine adenovirus type 2 expressing ROP16 (CAV-2-ROP16) of T. gondii was constructed and identified to express ROP16 in Madin-Darby canine kidney cells (MDCK) cells by western blot (WB) and indirect immunofluorescence (IFA) assays...
October 11, 2016: Infection, Genetics and Evolution
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