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meningococcal b vaccine

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https://www.readbyqxmd.com/read/28739825/neisseria-cinerea-expresses-a-functional-factor-h-binding-protein-which-is-recognised-by-immune-responses-elicited-by-meningococcal-vaccines
#1
Hayley Lavender, Katy Poncin, Christoph M Tang
Neisseria meningitidis is a major cause of bacterial meningitis and sepsis worldwide. Capsular polysaccharide vaccines are available against meningococcal serogroups A, C, W and Y. More recently two protein based vaccines, Bexsero® and Trumenba®, have been licenced against meningococcal serogroup B strains; both vaccines contain meningococcal factor H binding protein (fHbp). fHbp is a surface exposed lipoprotein which binds the negative complement regulator, complement factor H (CFH), thereby inhibiting the alternative pathway of complement activation...
July 24, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28737301/vaccine-preventable-admissions-to-an-irish-paediatric-intensive-care
#2
Y Doyle, M Healy, C McMahon, S Crowe
In the Republic of Ireland, the schedule of state-funded immunisation for children is comprehensive and includes diphtheria, pertussis, tetanus, pneumococcus, hepatitis B, meningococcus C, haemophilus B, polio, measles, rubella and mumps. Varicella and meningococcal B vaccines are commercially available but are not currently funded by the government. Each of the illnesses preventable by these vaccines can cause substantial morbidity, and rarely mortality, in infants and children. Our PICU continues to see serious illness due to avoidable infection...
May 10, 2017: Irish Medical Journal
https://www.readbyqxmd.com/read/28729920/annual-vaccine-preventable-disease-report-for-new-south-wales-australia-2014
#3
Nathan Saul, Robin Gilmour, Paula Spokes
This report provides an epidemiological description of selected vaccine-preventable diseases in New South Wales (NSW), Australia, for 2014 to inform ongoing disease monitoring and control efforts. A trend of increasing pertussis notifications was observed, beginning midway through 2014 with the highest disease rates in the 5-9 year age group. Measles notifications increased to 67 cases in 2014 from 34 cases in 2013. Measles cases were associated with travel-related importations-predominantly from the Philippines-and secondary transmission increased compared to 2013 involving three main disease clusters...
April 2017: Western Pacific Surveillance and Response Journal: WPSAR
https://www.readbyqxmd.com/read/28705462/effectiveness-of-a-group-b-outer-membrane-vesicle-meningococcal-vaccine-against-gonorrhoea-in-new-zealand-a-retrospective-case-control-study
#4
Helen Petousis-Harris, Janine Paynter, Jane Morgan, Peter Saxton, Barbara McArdle, Felicity Goodyear-Smith, Steven Black
BACKGROUND: Gonorrhoea is a major global public health problem that is exacerbated by drug resistance. Effective vaccine development has been unsuccessful, but surveillance data suggest that outer membrane vesicle meningococcal group B vaccines affect the incidence of gonorrhoea. We assessed vaccine effectiveness of the outer membrane vesicle meningococcal B vaccine (MeNZB) against gonorrhoea in young adults aged 15-30 years in New Zealand. METHODS: We did a retrospective case-control study of patients at sexual health clinics aged 15-30 years who were born between Jan 1, 1984, and Dec 31, 1998, eligible to receive MeNZB, and diagnosed with gonorrhoea or chlamydia, or both...
July 7, 2017: Lancet
https://www.readbyqxmd.com/read/28698183/meningococcal-b-vaccination-also-cuts-risk-of-gonorrhoea-study-suggests
#5
Susan Mayor
No abstract text is available yet for this article.
July 11, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28668575/meningococcal-serogroup-c-immunogenicity-antibody-persistence-and-memory-b-cells-induced-by-the-monovalent-meningococcal-serogroup-c-versus-quadrivalent-meningococcal-serogroup-acwy-conjugate-booster-vaccine-a-randomized-controlled-trial
#6
Mariëtte B van Ravenhorst, Fiona R M van der Klis, Debbie M van Rooijen, Mirjam J Knol, Susanne P Stoof, Elisabeth A M Sanders, Guy A M Berbers
BACKGROUND: Adolescents are considered the key transmitters of meningococci in the population. Meningococcal serogroup C (MenC) antibody levels wane rapidly after MenC conjugate vaccination in young children, leaving adolescents with low antibody levels. In this study, we compared MenC immune responses after booster vaccination in adolescence with either tetanus toxoid conjugated MenC (MenC-TT) or MenACWY (MenACWY-TT) vaccine, and aimed to establish an optimal age for this booster. METHODS: Healthy 10-, 12-, and 15-year-olds, who received a single dose of MenC-TT vaccine in early childhood, were randomized to receive MenC-TT or MenACWY-TT vaccine...
June 28, 2017: Vaccine
https://www.readbyqxmd.com/read/28666760/vaccination-coverage-among-social-and-healthcare-workers-in-ten-countries-of-samu-social-international-sites
#7
Esaie Marshall, Dominique Salmon, Delphine Laisney, Nadia Bousfiha, Yacouba Togola, François Ouedraogo, Maud Santantonio, Coumba Khadidja Dieng, Suzanne Tartière, Xavier Emmanuelli
BACKGROUND: We aim to determine the vaccination coverage of social and healthcare workers in International sites of Samusocial, providing emergency care to homeless people, and to assess factors associated with having received necessary doses at adulthood. METHODS: Data on immunization coverage of social and healthcare workers were provided by a cross-sectional survey, conducted from February to April 2015 among 252 Samusocial workers in 10 countries. Vaccination status and characteristics of participants were collected through a self-administered questionnaire...
June 27, 2017: Vaccine
https://www.readbyqxmd.com/read/28651843/-neisseria%C3%A2-meningitidis-urethritis-two-case-reports
#8
C Dubois, A-L Liegeon, C Fabbro, F Truchetet
BACKGROUND: Neisseria meningitidis (NM) is a commensal bacteria present in the oropharyngeal flora that causes invasive infections. There have been rarer reports of presence in the genital region. Herein, we present two cases of acute NM urethritis. PATIENTS AND METHODS: Two men aged 30 and 31years, one of whom is homosexual and seropositive for HIV infection, presented urethral discharge which was diagnosed as acute urethritis. The unit through samples indicated the presence of NM of serogroups B and C...
June 23, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28651840/the-role-of-anti-nhba-antibody-in-bactericidal-activity-elicited-by-the-meningococcal-serogroup-b-vaccine-menb-4c
#9
Elizabeth Partridge, Eduardo Lujan, Serena Giuntini, David M Vu, Dan M Granoff
BACKGROUND: MenB-4C (Bexsero®) is a multicomponent serogroup B meningococcal vaccine. For vaccine licensure, efficacy was inferred from serum bactericidal antibody (SBA) against three antigen-specific indicator strains. The bactericidal role of antibody to the fourth vaccine antigen, Neisserial Heparin binding antigen (NHba), is incompletely understood. METHODS: We identified nine adults immunized with two or three doses of MenB-4C who had sufficient volumes of sera and >3-fold increases in SBA titer against a strain with high NHba expression, which was mismatched with the other three MenB-4C antigens that elicit SBA...
June 23, 2017: Vaccine
https://www.readbyqxmd.com/read/28647167/adolescent-meningococcal-serogroup-a-w-and-y-immune-responses-following-immunization-with-quadrivalent-meningococcal-a-c-w-and-y-conjugate-vaccine-optimal-age-for-vaccination
#10
Mariëtte B van Ravenhorst, Fiona R M van der Klis, Debbie M van Rooijen, Elisabeth A M Sanders, Guy A M Berbers
BACKGROUND: Recently the incidence of meningococcal serogroup Y (MenY) and in particular serogroup W (MenW) invasive disease has risen in several European countries, including the Netherlands. Adolescents are a target group for primary prevention through vaccination to protect against disease and reduce carriage and induce herd protection in the population. The present study assessed MenA, MenW and MenY antibody levels in adolescents up to one year following primary vaccination with quadrivalent MenACWY-PS conjugated to tetanus toxoid (MenACWY-TT)...
June 21, 2017: Vaccine
https://www.readbyqxmd.com/read/28637642/emergency-department-attendance-following-4-component-meningococcal-b-vaccination-in-infants
#11
Sarah Kapur, Thomas Bourke, Julie-Ann Maney, Paul Moriarty
INTRODUCTION: In September 2015, the UK became the first country in the world to introduce the 4-component meningococcal B vaccine(4CMenB) into the routine vaccine schedule for infants. 4CMenB is known to cause fever in infants. Infants presenting with fever, particularly those under 3 months, have a significant risk of serious bacterial infection(SBI). METHOD: Between September 2015 and January 2016, we performed a prospective audit of management of infants between 30 and 180 days attending the regional paediatric emergency department(ED) in Northern Ireland, within 4 days of receiving 4CMenB...
June 21, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28630122/eculizumab-blocks-vaccine-induced-opsonophagocytic-killing-of-meningococci-by-whole-blood-from-immunized-adults
#12
Monica Konar, Dan M Granoff
Eculizumab, a humanized anti-complement C5 monoclonal antibody for treatment of paroxysmal nocturnal hemoglobinuria (PNH) and atypical hemolytic uremic syndrome, blocks the terminal complement pathway required for serum bactericidal activity (SBA). Because treated patients are at >1000-fold increased risk of meningococcal disease, vaccination is recommended, but whether vaccination can protect by opsonophagocytic activity in the absence of SBA is not known. Meningococci were added to anticoagulated blood from 12 healthy adults vaccinated with meningococcal serogroup B and serogroup A,C,W,Y vaccines...
June 19, 2017: Blood
https://www.readbyqxmd.com/read/28624305/durability-of-immunogenicity-and-strain-coverage-of-menbvac-a-meningococcal-vaccine-based-on-outer-membrane-vesicles-lessons-of-the-normandy-campaign
#13
Julien Sevestre, Eva Hong, Valérie Delbos, Aude Terrade, Eric Mallet, Ala-Eddine Deghmane, Ludovic Lemée, Muhamed-Kheir Taha, François Caron
OBJECTIVES: MenBvac® is an outer membrane vesicle (OMV)-based meningococcal vaccine. From 2006 to 2012, it was used to control a clonal B outbreak in Normandy (France). We aimed to analyse the durability of the response against the epidemic strain and coverage beyond the vaccine strain. These data should help to optimize the use of OMV-containing vaccines, such as the new 4CMenB/Bexsero® recombinant vaccine. METHODS: Serum bactericidal activity (SBA) was measured in two cohorts of children who received their first dose of MenBvac® at 1-5years of age and accepted to provide a blood sample either one or four years after a 2+1+1 schedule...
July 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28621647/timeliness-and-completeness-of-routine-childhood-vaccinations-in-children-by-two-years-of-age-in-alberta-canada
#14
Vineet Saini, Shannon E MacDonald, Deborah A McNeil, Sheila W McDonald, James D Kellner, Sarah A Edwards, Victoria Stagg, Suzanne Tough
OBJECTIVES: Assessing timeliness and completeness of vaccine administration is important for evaluating the effectiveness of immunization programs. Few studies have reported timeliness, particularly in Canada. The objective of this study was to examine timeliness of the receipt of vaccination for each routine childhood recommended vaccine by 24 months of age among children in a community-based pregnancy cohort in Calgary, Alberta. METHODS: Survey data from a community-based pregnancy cohort in Alberta were linked to Public Health vaccination records of children (n = 2763)...
June 16, 2017: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
https://www.readbyqxmd.com/read/28599793/a-cross-reacting-material-crm197-conjugate-vaccine-induces-diphtheria-toxin-neutralizing-antibody-response-in-children-and-adolescents-infected-or-not-with-hiv
#15
Giselle P Silva, Rafaela S Santos, Wânia F Pereira-Manfro, Bianca Ferreira, Daniella M Barreto, Ana Cristina C Frota, Cristina B Hofer, Lucimar G Milagres
Anti-diphtheria antibody levels decrease with aging, and frequent booster vaccinations are required to maintain herd immunity. We analyzed the diphtheria toxin neutralizing antibody (DT-Nab) response induced by a conjugate vaccine (meningococcal C polysaccharide-CRM197) in HIV-vertically infected (HI) children and adolescents and healthy controls (HC) with matched age. We report the association of DT-Nab with the bactericidal antibodies to serogroup C meningococcus (MenC). Before vaccination, 21 HI patients (50%) had no protection against diphtheria (≤0...
June 6, 2017: Vaccine
https://www.readbyqxmd.com/read/28592578/bacterial-meningitis-in-finland-1995-2014-a-population-based-observational-study
#16
Aleksandra Polkowska, Maija Toropainen, Jukka Ollgren, Outi Lyytikäinen, J Pekka Nuorti
OBJECTIVES: Bacterial meningitis remains an important cause of morbidity and mortality worldwide. Its epidemiological characteristics, however, are changing due to new vaccines and secular trends. Conjugate vaccines against Haemophilus influenzae type b and Streptococcus pneumoniae (10-valent) were introduced in 1986 and 2010 in Finland. We assessed the disease burden and long-term trends of five common causes of bacterial meningitis in a population-based observational study. METHODS: A case was defined as isolation of S...
June 6, 2017: BMJ Open
https://www.readbyqxmd.com/read/28583305/immunogenicity-and-safety-of-a-new-hexavalent-vaccine-dtap5-ipv-hb-hib-administered-in-a-mixed-primary-series-schedule-with-a-pentavalent-vaccine-dtap5-ipv-hib
#17
Federico Martinón-Torres, Florence Boisnard, Stéphane Thomas, Christine Sadorge, Ray Borrow
DTaP5-IPV-HB-Hib vaccine is a fully-liquid, combination hexavalent vaccine. This phase III, open-label, multicentre study conducted in Spain, evaluated the immune response to all DTaP5-IPV-HB-Hib antigens when the vaccine was used in a mixed hexa/penta/hexa primary series. Infants (who had received one dose of hepatitis B vaccine at birth) received a mixed schedule including DTaP5-IPV-HB-Hib (PRP-OMP conjugate) at 2 and 6months of age, DTaP5-IPV-Hib at 4months, meningococcal serogroup C conjugate (MCC) vaccine at 2 and 4months, and routine rotavirus and pneumococcal vaccination...
June 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28582542/serum-bactericidal-antibody-responses-of-students-immunized-with-a-meningococcal-serogroup-b-vaccine-in-response-to-an-outbreak-on-a-university-campus
#18
Eduardo Lujan, Kathleen Winter, Jillandra Rovaris, Qin Liu, Dan M Granoff
Background.: MenB-4C is a recently licensed meningococcal serogroup B vaccine. For vaccine licensure, short-term efficacy was inferred from serum bactericidal antibody (SBA) titers against three antigen-specific indicator strains, which are not necessarily representative of U.S. disease-causing strains. Methods.: 4923 students were immunized with MenB-4C in response to an outbreak at a university. Serum samples were obtained at 1.5 to 2 months from 106 students who received the recommended 2 doses and 52 unvaccinated students...
June 3, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28581267/characterization-of-oropharyngeal-carriage-isolates-of-neisseria-meningitidis-in-healthy-korean-adolescents-in-2015
#19
Han Wool Kim, Soyoung Lee, Daeho Kwon, Jihei Cha, Jong Gyun Ahn, Kyung Hyo Kim
The meningococcus carriage rate is age-dependent, with a high prevalence in adolescents and young adults. This cross-sectional study aimed to estimate the oropharyngeal carriage rate of meningococcus among healthy Korean adolescents and its relationship with several population characteristics. The survey was conducted from April to May 2015 among 1,460 first-year high-school students in 9 high schools located in Gyeonggi province, Korea. Each student answered a short questionnaire assessing risk factors for carriage, and posterior pharyngeal wall swab samples were obtained...
July 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28580917/crystal-structures-of-human-fabs-targeting-the-bexsero-meningococcal-vaccine-antigen-nhba
#20
Martina Maritan, Roberta Cozzi, Paola Lo Surdo, Daniele Veggi, Matthew James Bottomley, Enrico Malito
Neisserial heparin-binding antigen (NHBA) is a surface-exposed lipoprotein from Neisseria meningitidis and is a component of the meningococcus B vaccine Bexsero. As part of a study to characterize the three-dimensional structure of NHBA and the molecular basis of the human immune response to Bexsero, the crystal structures of two fragment antigen-binding domains (Fabs) isolated from human monoclonal antibodies targeting NHBA were determined. Through a high-resolution analysis of the organization and the amino-acid composition of the CDRs, these structures provide broad insights into the NHBA epitopes recognized by the human immune system...
June 1, 2017: Acta Crystallographica. Section F, Structural Biology Communications
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