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Vaccine conjugates

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https://www.readbyqxmd.com/read/28225904/invasive-haemophilus-influenzae-disease-in-the-vaccine-era-in-rio-de-janeiro-brazil
#1
Mari Tuyama, Jessica Corrêa-Antônio, Jessica Schlackman, Jane W Marsh, Maria C Rebelo, Elaine O Cerqueira, Márcio Nehab, Fabíola Kegele, Getúlio F Carmo, Dominique Ca Thielmann, Paulo F Barroso, Lee H Harrison, David E Barroso
BACKGROUND: Haemophilus influenzae (Hi) serotype b (Hib) conjugate vaccine was incorporated into the infant immunisation schedule in Brazil in 1999, where Hib was one of the major etiologic sources of community-acquired bacterial meningitis. OBJECTIVES: The purpose of this study is to describe the molecular epidemiology of invasive Hi disease in Rio de Janeiro state, Brazil, before and after vaccine introduction. METHODS: Surveillance data from 1986 to 2014 were analysed...
March 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28225898/invasive-haemophilus-influenzae-disease-in-the-vaccine-era-in-rio-de-janeiro-brazil
#2
Mari Tuyama, Jessica Corrêa-Antônio, Jessica Schlackman, Jane W Marsh, Maria C Rebelo, Elaine O Cerqueira, Márcio Nehab, Fabíola Kegele, Getúlio F Carmo, Dominique Ca Thielmann, Paulo F Barroso, Lee H Harrison, David E Barroso
BACKGROUND: Haemophilus influenzae (Hi) serotype b (Hib) conjugate vaccine was incorporated into the infant immunisation schedule in Brazil in 1999, where Hib was one of the major etiologic sources of community-acquired bacterial meningitis. OBJECTIVES: The purpose of this study is to describe the molecular epidemiology of invasive Hi disease in Rio de Janeiro state, Brazil, before and after vaccine introduction. METHODS: Surveillance data from 1986 to 2014 were analysed...
February 16, 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28222999/effect-of-stepwise-perinatal-immunization-education-a-cluster-randomized-controlled-trial
#3
Aya Saitoh, Akihiko Saitoh, Isamu Sato, Tomohiro Shinozaki, Hajime Kamiya, Satoko Nagata
BACKGROUND: Perinatal immunization education is important for improving the immunization outcomes of infants; however, the content of educational materials used at each perinatal period has not been carefully evaluated. We hypothesized that stepwise education offered at different perinatal periods would improve infant immunization status and enhance maternal immunization knowledge. METHODS: In this cluster-randomized controlled trial, pregnant women were recruited from nine obstetric sites in Niigata, Japan...
February 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28220707/first-description-of-a-rifampicin-resistant-neisseria-meningitidis-serogroup-y-strain-causing-recurrent-invasive-meningococcal-disease-in-hungary
#4
Ákos Tóth, Brigitta Berta, Tamás Tirczka, Csilla Jekkel, Anita Ábrahám, Zoltán Prohászka, Zsófia Bognár, Tímea Erdősi
A Hungarian soldier previously immunized against Neisseria meningitidis by quadrivalent polysaccharide vaccine was twice infected with meningococci within six weeks. The patient was treated with ceftriaxone during both episodes and he successfully recovered. His close contacts received rifampicin prophylaxis. An investigation was performed to characterize the genetic background of the pathogens to ascertain if the recurrent invasive meningococcal disease was caused by the same strain and to find out the reason for reinfection...
February 21, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28216181/changing-trends-in-serotypes-of-s-pneumoniae-isolates-causing-invasive-and-non-invasive-diseases-in-unvaccinated-population-in-mexico-2000-2014
#5
María Noemí Carnalla-Barajas, Araceli Soto-Noguerón, Miguel Angel Sánchez-Alemán, Fortino Solórzano-Santos, María Elena Velazquez-Meza, Gabriela Echániz-Aviles
OBJECTIVE: Introduction of pneumococcal conjugate vaccines (PCV) targeted against a limited number of serotypes substantially decreased invasive (IPD) and non-invasive pneumococcal diseases (NIPD) but it was accompanied by non-vaccine type replacement disease. After 9 years of introduction of PCV in Mexico, we analyze the evidence of the indirect effects on IPD and NIPD serotype distribution among groups not targeted to receive the vaccine. METHODS: From January 2000 to December 2014, pneumococcal strains isolated from IPD and NIPD cases from patients ≥5 years of age from participant hospitals of the SIREVA II (Sistema Regional de Vacunas) network, were serotyped...
February 16, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28213046/splenectomy-as-a-destination-improving-quality-of-care-among-asplenic-veterans-through-a-travel-clinic
#6
Aaron P Mitchell, Joel C Boggan, Karen Lau, David L Simel
BACKGROUND: Asplenic patients are at risk for severe infections, but adherence to recommended preventive education and vaccination is poor. The goal of this study was to demonstrate that a targeted intervention can improve vaccination rates in a population of asplenic veterans. METHODS: Surgically asplenic patients actively receiving care in our health care system were identified via a database search. Patients were contacted via mailed letters and encouraged to attend an existing travel clinic with a new process designed for asplenic patients...
February 14, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28209678/prophylactic-antipyretics-for-prevention-of-febrile-seizures-following-vaccination
#7
Nicholas Monfries, Ran D Goldman
Question Parents of a 12-month-old boy are bringing their son in to my family practice clinic for his well-baby visit. As the infant is due for his 12-month vaccine series, the parents are concerned after hearing about the association between certain vaccinations and an increased risk of febrile seizures, and are wondering if they should administer prophylactic antipyretics to decrease the risk of febrile seizure. What vaccinations are associated with increased risk of febrile seizure, and is there evidence supporting prophylactic administration of antipyretics to prevent febrile seizures? Answer Vaccinations associated with increased risk of febrile seizure include the following: the measles-mumps-rubella vaccine; the measles-mumps-rubella-varicella vaccine; the combined diphtheria, tetanus, acellular pertussis, polio, and Haemophilus influenzae type b vaccine; the whole-cell pertussis vaccine; the 7-valent pneumococcal conjugate vaccine; and concomitant administration of the trivalent inactivated influenza vaccine with either the 7-valent pneumococcal conjugate vaccine or the diphtheria, tetanus, and acellular pertussis vaccine...
February 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/28207888/effect-of-the-different-13-valent-pneumococcal-conjugate-vaccination-uptakes-on-the-invasive-pneumococcal-disease-in-children-analysis-of-a-hospital-based-and-population-based-surveillance-study-in-madrid-spain-2007-2015
#8
Juan Picazo, Jesús Ruiz-Contreras, Juan Casado-Flores, Sagrario Negreira, Fernando Baquero, Teresa Hernández-Sampelayo, Enrique Otheo, Cristina Méndez
In the Community of Madrid, the 13-valent pneumococcal conjugate vaccine (PCV13) replaced the 7-valent (PCV7) in the fully government-funded Regional Immunization Program (RIP) in May, 2010, but was later excluded in May, 2012, and included again in January, 2015. These unique changes allowed us to assess the impact of the different pneumococcal vaccination policies on PCV13 uptake in infants and on the incidence rate (IR) of invasive pneumococcal disease (IPD) in children <15 years old. In this prospective, active, surveillance study, we estimated PCV13 uptakes, IR and incidence rate ratios (IRR) for total IPD and for IPD caused by PCV13- and non-PCV13 serotypes in children <15 years, stratified by age, in four periods with different vaccination policies: fully government-funded PCV7 vaccination, fully government-funded PCV13, mixed public/private funding and only private funding...
2017: PloS One
https://www.readbyqxmd.com/read/28202800/discovery-of-novel-pneumococcal-serotype-35d-a-natural-wcig-deficient-variant-of-serotype-35b
#9
K Aaron Geno, Jamil S Saad, Moon H Nahm
The pneumococcus (Streptococcus pneumoniae) remains a significant cause of morbidity and mortality, especially among those at the extremes of age. Its capsular polysaccharide is essential for systemic virulence. Over ninety serologically distinct pneumococcal capsular polysaccharides (serotypes) are recognized, but they are unequal in prevalence. Because antibodies against the capsule are protective, polysaccharide conjugate vaccines, which are constructed against the most prevalent serotypes, have made great reductions in pneumococcal disease caused by these serotypes...
February 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28202760/restriction-of-hcmv-replication-by-isg15-a-host-effector-regulated-by-cgas-sting-dsdna-sensing
#10
Christopher Bianco, Ian Mohr
Accumulation of the interferon-stimulated gene (ISG) 15 protein product, which is reversibly conjugated to numerous polypeptide targets, impacts the proteome and physiology of uninfected and infected cells. While many viruses, including human cytomegalovirus (HCMV) blunt host antiviral defenses by limiting ISG expression, the overall abundance of ISG15 monomer and protein conjugates rises in HCMV-infected cells. However, the molecular signals underlying ISG15 accumulation and whether the ISG15 polypeptide itself influences HCMV infection biology remain unknown...
February 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28199482/pneumococcal-pneumonia-requiring-hospitalization-in-u-s-children-in-the-13-valent-pneumococcal-conjugate-vaccine-era
#11
Liset Olarte, William J Barson, Ryan M Barson, José R Romero, John S Bradley, Tina Q Tan, Laurence B Givner, Jill A Hoffman, Philana Ling Lin, Kristina G Hultén, Edward O Mason, Sheldon L Kaplan
No abstract text is available yet for this article.
February 11, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28198725/adult-pneumococcal-vaccination-advances-impact-and-unmet-needs
#12
Ricardo J José, Jeremy S Brown
PURPOSE OF REVIEW: Preventing pneumonia in the elderly and study participants individuals with comorbidities is an unmet clinical need. Streptococcus pneumoniae is the commonest bacterial cause of pneumonia, and we summarize recent findings regarding current S. pneumoniae vaccines, and debate their efficacy and cost-effectiveness in risk groups. We also discuss potential future vaccine strategies such as protein antigen vaccines. RECENT FINDINGS: Current vaccination with pneumococcal polysaccharide vaccine does not prevent S...
February 13, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28197317/comparison-of-fluorinated-and-nonfluorinated-lipids-in-self-adjuvanting-delivery-systems-for-peptide-based-vaccines
#13
Waleed M Hussein, Saori Mukaida, Fazren Azmi, Stacey Bartlett, Celine Olivier, Michael R Batzloff, Michael F Good, Mariusz Skwarczynski, Istvan Toth
Safe immunostimulants (adjuvants) are essential for the development of highly potent peptide-based vaccines. This study examined for the first time whether fluorinated lipids could stimulate humoral immunity in vivo when conjugated to peptide antigen. The impact of fluorination on humoral immunity was tested using a library of peptide-based vaccine candidates against the group A streptococcus (GAS). The fluorinated constructs stimulated similar mouse IgG titers to those elicited by complete Freund's adjuvant (CFA) and were higher than those produced in mice that received the nonfluorinated constructs...
February 9, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28196635/childhood-meningitis-in-kuwait-in-the-era-of-post-pneumococcal-conjugate-vaccination-a-multicenter-study
#14
Hussain Sadeq, Entesar H Husain, Amna Alkoot, Suha Atyani, Abdullah Al-Fraij, Abdulrahman Al-Daithan, Talal AlSaleem, Anfal Taher, May Alenezi
This is a retrospective study to evaluate epidemiology and etiologies of childhood meningitis in Kuwait after the routine introduction of the pneumococcal conjugate vaccine. The data was collected from 196 patients in the period of 2010-2014. Aseptic meningitis accounted for 51% of the cases, bacterial meningitis accounted for 29% cases and partially treated meningitis were 20%. Organisms causing bacterial meningitis were: Streptococcus pneumoniae 40.4%, Neisseria meningitidis 17.6%, Haemophilus spp. 12.2%, other gram positive or negative 19...
February 9, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28195591/correction-synthesis-and-immunological-evaluation-of-muc1-glycopeptide-conjugates-bearing-n-acetyl-modified-stn-derivatives-as-anticancer-vaccines
#15
An Xiao, Xiu-Jing Zheng, Chengcheng Song, Yue Gui, Chang-Xin Huo, Xin-Shan Ye
Correction for 'Synthesis and immunological evaluation of MUC1 glycopeptide conjugates bearing N-acetyl modified STn derivatives as anticancer vaccines' by An Xiao et al., Org. Biomol. Chem., 2016, 14, 7226-7237.
February 14, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28194210/recommended-immunization-schedule-for-children-and-adolescents-immunization-guideline-8th-edition-released-by-the-korean-pediatric-society-in-2015
#16
REVIEW
Jong-Hyun Kim, Eun Hwa Choi, Su Eun Park, Yae-Jean Kim, Dae Sun Jo, Yun-Kyung Kim, Byung-Wook Eun, Jina Lee, Soo-Young Lee, Hyunju Lee, Ki Hwan Kim, Kyung-Hyo Kim
This report includes the recommended immunization schedule table for children and adolescents based on the 8th (2015) and revised 7th (2012) Immunization Guidelines released by the Committee on Infectious Diseases of the Korean Pediatric Society (KPS). Notable revised recommendations include: reorganization of the immunization table with a list of vaccines on the vertical axis and the corresponding age on the horizontal axis; reflecting the inclusion of Haemophilus influenzae type b vaccine, pneumococcal conjugate vaccine, and hepatitis A vaccine into the National Immunization Program since 2012; addition of general recommendations for 2 new Japanese encephalitis (JE) vaccines and their interchangeability with existing JE vaccines; addition of general recommendations for quadrivalent meningococcal conjugate vaccines and scope of the recommended targets for vaccination; and emphasizing catch-up immunization of Tdap vaccine...
December 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28193398/incidence-of-invasive-salmonella-disease-in-sub-saharan-africa-a-multicentre-population-based-surveillance-study
#17
Florian Marks, Vera von Kalckreuth, Peter Aaby, Yaw Adu-Sarkodie, Muna Ahmed El Tayeb, Mohammad Ali, Abraham Aseffa, Stephen Baker, Holly M Biggs, Morten Bjerregaard-Andersen, Robert F Breiman, James I Campbell, Leonard Cosmas, John A Crump, Ligia Maria Cruz Espinoza, Jessica Fung Deerin, Denise Myriam Dekker, Barry S Fields, Nagla Gasmelseed, Julian T Hertz, Nguyen Van Minh Hoang, Justin Im, Anna Jaeger, Hyon Jin Jeon, Leon Parfait Kabore, Karen H Keddy, Frank Konings, Ralf Krumkamp, Benedikt Ley, Sandra Valborg Løfberg, Jürgen May, Christian G Meyer, Eric D Mintz, Joel M Montgomery, Aissatou Ahmet Niang, Chelsea Nichols, Beatrice Olack, Gi Deok Pak, Ursula Panzner, Jin Kyung Park, Se Eun Park, Henintsoa Rabezanahary, Raphaël Rakotozandrindrainy, Tiana Mirana Raminosoa, Tsiriniaina Jean Luco Razafindrabe, Emmanuel Sampo, Heidi Schütt-Gerowitt, Amy Gassama Sow, Nimako Sarpong, Hye Jin Seo, Arvinda Sooka, Abdramane Bassiahi Soura, Adama Tall, Mekonnen Teferi, Kamala Thriemer, Michelle R Warren, Biruk Yeshitela, John D Clemens, Thomas F Wierzba
BACKGROUND: Available incidence data for invasive salmonella disease in sub-Saharan Africa are scarce. Standardised, multicountry data are required to better understand the nature and burden of disease in Africa. We aimed to measure the adjusted incidence estimates of typhoid fever and invasive non-typhoidal salmonella (iNTS) disease in sub-Saharan Africa, and the antimicrobial susceptibility profiles of the causative agents. METHODS: We established a systematic, standardised surveillance of blood culture-based febrile illness in 13 African sentinel sites with previous reports of typhoid fever: Burkina Faso (two sites), Ethiopia, Ghana, Guinea-Bissau, Kenya, Madagascar (two sites), Senegal, South Africa, Sudan, and Tanzania (two sites)...
March 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28190897/synthesis-of-multivalent-glycopeptide-conjugates-that-mimic-an-hiv-epitope
#18
Jennifer K Bailey, Dung N Nguyen, Satoru Horiya, Isaac J Krauss
Recently, we reported a directed evolution method which enabled us to discover sequences of glycopeptides that bind with picomolar affinity to HIV antibody 2G12 and are of interest as HIV vaccine candidates. In this manuscript, we describe the syntheses of several of these large (~11-12 kDa) glycopeptides by a combination of fast flow peptide synthesis and click chemistry. We also discuss the optimization of their attachment to carrier protein CRM197, affording antigenic and immunogenic conjugates ready for animal vaccination...
October 6, 2016: Tetrahedron
https://www.readbyqxmd.com/read/28183282/enhanced-and-long-term-immunogenicity-of-a-her-2-neu-multi-epitope-vaccine-conjugated-to-the-carrier-crm197-in-conjunction-with-the-adjuvant-montanide
#19
Joshua Tobias, Joanna Jasinska, Karin Baier, Michael Kundi, Nicholas Ede, Christoph Zielinski, Ursula Wiedermann
BACKGROUND: We previously identified three short single peptides (P4, P6 and P7) representing different B-cell epitopes on the extracellular domain of Her-2/neu for a vaccine that was tested in a phase-I clinical trial. Here we describe the improvement of the multi peptide vaccine by fusing the single peptides to a hybrid peptide P467. METHODS: After coupling to either virosomes or to diphtheria toxoid CRM197 (CRM), the hybrid peptide was tested in different concentrations in combination with either Montanide or Aluminium hydroxide (Alum) in preclinical studies...
February 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28182850/conjugate-vaccines-from-bacterial-antigens-by-squaric-acid-chemistry-a-closer-look
#20
Peng Xu, Meagan Kelly, Willie F Vann, Firdausi Qadri, Edward T Ryan, Paul Kovac
Using O-SP-core (O-SPcNH2) polysaccharide, isolated from Vibrio cholerae O1 lipopolysaccharide (LPS) and related synthetic substances, a detailed study of factors that affect conjugation of bacterial polysaccharides to protein carriers by squaric acid chemistry to form conjugate vaccines has been carried out. Several processes previously unrecognized, which take place during the squarate labelling of the O-SPcNH2 and subsequent conjugation of the squarate (O-SPcNH-SqOMe) formed, have been identified. The efficiency of conjugation at pH 8...
February 9, 2017: Chembiochem: a European Journal of Chemical Biology
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