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Meningococcal vaccinations

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https://www.readbyqxmd.com/read/28931058/molecular-characterization-of-neisseria-meningitidis-isolates-recovered-from-11-19-year-old-meningococcal-carriers-in-salvador-brazil
#1
Ana Rafaela Silva Simões Moura, Cécilia Batmalle Kretz, Italo Eustáquio Ferreira, Amélia Maria Pithon Borges Nunes, José Cássio de Moraes, Mitermayer Galvão Reis, Alan John Alexander McBride, Xin Wang, Leila Carvalho Campos
Characterization of meningococci isolated from the pharynx is essential towards understanding the dynamics of meningococcal carriage and disease. Meningococcal isolates, collected from adolescents resident in Salvador, Brazil during 2014, were characterized by multilocus sequence typing, genotyping or whole-genome sequencing. Most were nongroupable (61.0%), followed by genogroups B (11.9%) and Y (8.5%). We identified 34 different sequence types (STs), eight were new STs, distributed among 14 clonal complexes (cc), cc1136 represented 20...
2017: PloS One
https://www.readbyqxmd.com/read/28929266/brazilian-meningococcal-c-conjugate-vaccine-physicochemical-immunological-and-thermal-stability-characteristics
#2
Renata Chagas Bastos, Marilza Batista Corrêa, Iaralice Medeiros de Souza, Milton Neto da Silva, Denise da Silva Gomes Pereira, Fernanda Otaviano Martins, Camila da Silva Faria, Ana Paula Dinis Ano Bom, Maria de Lourdes Leal, Ellen Jessouroun, José Godinho da Silva, Ricardo de Andrade Medronho, Ivna Alana Freitas Brasileiro da Silveira
High temperature is known to cause some instability in polysaccharide-protein conjugated vaccines and studies under stress conditions may be useful in determining whether short-term accidental exposure to undesired conditions can compromise product quality. In this study, we examined the structural stability of three industrial batches of Brazilian Meningococcal C conjugate bulk (MPCT) incubated at 4, 37, and 55 °C for 5 weeks. The effect of exposure to the storage temperatures was monitored by HPLC-SEC, CZE, CD and NMR techniques...
September 19, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/28928076/risk-of-invasive-meningococcal-disease-in-university-students-in-england-and-optimal-strategies-for-protection-using-menacwy-vaccine
#3
Sema Mandal, Helen Campbell, Sonia Ribeiro, Steve Gray, Tony Carr, Joanne White, Shamez N Ladhani, Mary E Ramsay
PURPOSE: In August 2015, in response to increasing group W invasive meningococcal disease (IMD) nationally, a MenACWY vaccine programme was introduced in the UK for 13-18year olds. We reviewed the epidemiology of IMD in young adults and university-associated cases in England during 2014-15 academic year and assessed the potential impact of different immunisation strategies. METHODS: Public Health England national enhanced surveillance data were used to describe the epidemiology of IMD cases in 15-24year olds in England during 2014/15...
September 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28928039/vaccination-coverage-of-adolescents-with-chronic-medical-conditions
#4
Annika M Hofstetter, Stewin Camargo, Karthik Natarajan, Susan L Rosenthal, Melissa S Stockwell
INTRODUCTION: Adolescents with chronic medical conditions (CMCs) are at increased risk of vaccine-preventable infections. Little is known about their vaccine uptake. METHODS: This retrospective cohort study included 3,989 adolescents aged 11-17 years receiving care at academically affiliated pediatric clinics between August 2011 and June 2013. Data were abstracted from the medical center's electronic health record and immunization registry in 2014. Vaccination coverage, timeliness, and missed opportunities were evaluated and analyzed in 2015-2016...
September 16, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28912442/the-association-between-respiratory-tract-infection-incidence-and-localised-meningitis-epidemics-an-analysis-of-high-resolution-surveillance-data-from-burkina-faso
#5
Judith E Mueller, Maxime Woringer, Souleymane Porgho, Yoann Madec, Haoua Tall, Nadège Martiny, Brice W Bicaba
Meningococcal meningitis epidemics in the African meningitis belt consist of localised meningitis epidemics (LME) that reach attack proportions of 1% within a few weeks. A meningococcal serogroup A conjugate vaccine was introduced in meningitis belt countries from 2010 on, but LME due to other serogroups continue to occur. The mechanisms underlying LME are poorly understood, but an association with respiratory pathogens has been hypothesised. We analysed national routine surveillance data in high spatial resolution (health centre level) from 13 districts in Burkina Faso, 2004-2014...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28903515/update-from-the-advisory-committee-on-immunization-practices
#6
Sean T O'Leary, Yvonne A Maldonado, Carrie L Byington
The Advisory Committee on Immunization Practices (ACIP), a group of medical and public health experts, meets 3 times per year to develop recommendations for vaccine use in the United States. The group has 15 voting members, and each member's term is 4 years. ACIP members and Centers for Disease Control and Prevention (CDC) staff discuss the epidemiology of vaccine-preventable diseases and vaccine research, effectiveness, safety data, and clinical trial results. Representatives from the American Academy of Pediatrics (C...
September 1, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28882444/tetanus-toxoid-carrier-protein-induced-t-helper-cell-responses-upon-vaccination-of-middle-aged-adults
#7
Marieke van der Heiden, Aafke Duizendstra, Guy A M Berbers, Annemieke M H Boots, Anne-Marie Buisman
INTRODUCTION: Vaccines frequently induce suboptimal immune responses in the elderly, due to immunological ageing. Timely vaccination may be a strategy to overcome this problem, which classifies middle-aged adults asan interesting target group for future vaccine interventions. However, the immunological fitness of the middle-aged population is ill-defined. It is currently unknown whether effective T-cell help towards B-cells is initiated by conjugate-carrier vaccines at middle-age. AIM: We characterized systemic Tetanus Toxoid (TT) specific T-helper cell responses in the circulation of middle-aged adults (50-65years of age, n=31) having received the MenACWY-TT vaccination...
September 4, 2017: Vaccine
https://www.readbyqxmd.com/read/28864711/meningococcal-b-vaccine-failure-with-a-penicillin-resistant-strain-in-a-young-adult-on-long-term-eculizumab
#8
Sydel R Parikh, Jay Lucidarme, Coralie Bingham, Paul Warwicker, Tim Goodship, Ray Borrow, Shamez N Ladhani
We describe a case of invasive meningococcal disease due to a vaccine-preventable and penicillin-resistant strain in a fully immunized young adult on long-term complement inhibitor therapy and daily penicillin chemoprophylaxis. Eculizumab is a humanized monoclonal antibody that binds human complement C5 protein and inhibits the terminal complement pathway. It is currently recommended for the treatment of complement-mediated thrombotic microangiopathies. An unwanted complication of inhibiting complement, however, is an increased risk of invasive meningococcal disease...
September 2017: Pediatrics
https://www.readbyqxmd.com/read/28859312/phase-variation-of-dna-methyltransferases-and-the-regulation-of-virulence-and-immune-evasion-in-the-pathogenic-neisseria
#9
Kate L Seib, Freda E-C Jen, Adeana L Scott, Aimee Tan, Michael P Jennings
The pathogenic Neisseria provide textbook examples of phase variation: the high frequency, random and reversible switching of gene expression. Typically, phase variable gene expression is observed in genes required for the expression of surface proteins and carbohydrate structures. All Neisseria gonorrhoeae and N. meningitidis strains also express phase variable DNA methyltransferases that are components of DNA restriction-modification systems. Phase variation of these DNA methyltransferases (Mod) alters global DNA methylation patterns...
August 31, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28855159/non-specific-effects-of-measles-mumps-and-rubella-mmr-vaccination-in-high-income-setting-population-based-cohort-study-in-the-netherlands
#10
COMPARATIVE STUDY
Susanne M A J Tielemans, Hester E de Melker, Susan J M Hahné, Anna G C Boef, Fiona R M van der Klis, Elisabeth A M Sanders, Marianne A B van der Sande, Mirjam J Knol
Objectives To investigate whether measles, mumps, and rubella (MMR) vaccine has positive non-specific effects in a high income setting and to compare rates of hospital admissions for infections between children aged ≤2 years who received live MMR vaccine and those who received an inactivated vaccine against diphtheria, tetanus, pertussis, polio, and Haemophilus influenzae type b (DTaP-IPV-Hib) as their most recent vaccination.Design Nationwide population based cohort study.Setting In the Netherlands, DTaP-IPV-Hib+pneumococcal vaccination (PCV) is recommended at ages 2, 3, 4, and 11 months and MMR + meningococcal C (MenC) vaccination at age 14 months...
August 30, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28853975/impact-of-a-web-site-based-educational-programme-for-increasing-vaccination-coverage-among-adolescents
#11
Susanna Esposito, Sonia Bianchini, Claudia Tagliabue, Giulia Umbrello, Barbara Madini, Giada Di Pietro, Nicola Principi
Data regarding the use of technology to improve adolescent knowledge on vaccines are scarce. The main aim of this study was to evaluate whether different web-based educational programmes for adolescents might increase their vaccination coverage. Overall, 917 unvaccinated adolescents (389 males, 42.4%; mean age ± standard deviation, 14.0 ± 2.2 years) were randomized 1:1:1 into the following groups: no intervention (n = 334), website educational programme only (n = 281), or web-site plus face to face lesson (n = 302) groups...
August 30, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28846836/high-risk-for-invasive-meningococcal-disease-among-patients-receiving-eculizumab-soliris-despite-receipt-of-meningococcal-vaccine
#12
EDITORIAL
L A McNamara, N Topaz, X Wang, S Hariri, L Fox, J R MacNeil
No abstract text is available yet for this article.
September 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28837693/alternative-vaccine-administration-by-powder-injection-needle-free-dermal-delivery-of-the-glycoconjugate-meningococcal-group-y-vaccine
#13
Nikolas T Weissmueller, Leanne Marsay, Heiko A Schiffter, Robert C Carlisle, Christine S Rollier, Robert K Prud'homme, Andrew J Pollard
Powder-injectors use gas propulsion to deposit lyophilised drug or vaccine particles in the epidermal and sub epidermal layers of the skin. We prepared dry-powder (Tg = 45.2 ± 0.5°C) microparticles (58.1 μm) of a MenY-CRM197 glyconjugate vaccine (0.5% wt.) for intradermal needle-free powder injection (NFPI). SFD used ultrasound atomisation of the liquid vaccine-containing excipient feed, followed by lyophilisation above the glass transition temperature (Tg' = - 29.9 ± 0.3°C). This resulted in robust particles (density~ 0...
2017: PloS One
https://www.readbyqxmd.com/read/28837546/national-regional-state-and-selected-local-area-vaccination-coverage-among-adolescents-aged-13-17-years-united-states-2016
#14
Tanja Y Walker, Laurie D Elam-Evans, James A Singleton, David Yankey, Lauri E Markowitz, Benjamin Fredua, Charnetta L Williams, Sarah A Meyer, Shannon Stokley
The Advisory Committee on Immunization Practices (ACIP) recommends that adolescents routinely receive tetanus, diphtheria, and acellular pertussis vaccine (Tdap), meningococcal conjugate vaccine (MenACWY), and human papillomavirus (HPV) vaccine (1) at age 11-12 years. ACIP also recommends catch-up vaccination with hepatitis B vaccine, measles, mumps, and rubella (MMR) vaccine, and varicella vaccine for adolescents who are not up to date with childhood vaccinations. ACIP recommends a booster dose of MenACWY at age 16 years (1)...
August 25, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28808592/a-case-of-fulminant-meningococcemia-it-is-all-in-the-complement
#15
Kellie L Hawkins, Mariah Hoffman, Sonia Okuyama, Sarah E Rowan
Eculizumab is a novel monoclonal antibody that inhibits complement-mediated hemolysis in patients with paroxysmal nocturnal hemoglobinuria (PNH). Complement deficiency is a well-known risk factor for meningococcal infection. We describe a case of a young patient with PNH treated with eculizumab who presented with a life-threatening case of nongroupable meningococcemia. As this new biologic agent becomes more widely prescribed, providers should be aware of the increased risk of meningococcemia. In addition to vaccination, providers may consider the use of oral penicillin for antibiotic prophylaxis against Neisseria meningitidis in these cases of functional complement deficiency...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28802678/gonococcal-vaccine-development-lessons-from-group-b-meningococcal-vaccines
#16
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
August 2017: EBioMedicine
https://www.readbyqxmd.com/read/28794096/an-increase-in-accident-and-emergency-presentations-for-adverse-events-following-immunisation-after-introduction-of-the-group-b-meningococcal-vaccine-an-observational-study
#17
Viveka Nainani, Ushma Galal, Jim Buttery, Matthew D Snape
OBJECTIVES: To determine whether the introduction of the capsular group B meningococcal vaccine (4CMenB) in the UK has increased presentations of infants to emergency departments with adverse events following immunisation (AEFI). PARTICIPANTS, DESIGN AND SETTING: A retrospective review of hospital records of infants aged 1-6 months presenting to Oxford University Hospitals NHS Trust's emergency departments from September 2013 to August 2016 with discharge diagnoses of vaccine reactions or non-specific conditions...
August 9, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28794055/effect-of-vaccine-elicited-antibodies-on-colonization-of-neisseria-meningitidis-serogroup-b-and-c-strains-in-a-human-bronchial-epithelial-cell-culture-model
#18
Vianca Vianzon, Beate Illek, Gregory R Moe
Capsular polysaccharide-protein conjugate vaccines protect individuals from invasive disease and decrease carriage, which reduces spread of the organism in the population. In contrast, antibodies elicited by plain polysaccharide or protein antigen-based meningococcal (Men) vaccines have little or no effect on decreasing carriage. In this study, we investigated the mechanism by which vaccine-induced human IgG antibodies affect colonization by serogroup B (MenB) or C (MenC) strains using a human bronchial epithelial cell culture model (16HBE14o-)...
August 9, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28771457/meningitis-outbreak-caused-by-vaccine-preventable-bacterial-pathogens-northern-ghana-2016
#19
Fortress Y Aku, Fernanda C Lessa, Franklin Asiedu-Bekoe, Phoebe Balagumyetime, Winfred Ofosu, Jennifer Farrar, Mahamoudou Ouattara, Jeni T Vuong, Kofi Issah, Joseph Opare, Sally-Ann Ohene, Charles Okot, Ernest Kenu, Donne K Ameme, David Opare, Abass Abdul-Karim
Bacterial meningitis is a severe, acute infection of the fluid surrounding the brain and spinal cord that can rapidly lead to death. Even with recommended antibiotic treatment, up to 25% of infected persons in Africa might experience neurologic sequelae (1). Three regions in northern Ghana (Upper East, Northern, and Upper West), located in the sub-Saharan "meningitis belt" that extends from Senegal to Ethiopia, experienced periodic outbreaks of meningitis before introduction of serogroup A meningococcal conjugate vaccine (MenAfriVac) in 2012 (2,3)...
August 4, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28770496/serogroup-b-meningococcus-outbreaks-prevalence-and-the-case-for-standard-vaccination
#20
REVIEW
James Grogan, Karen Roos
PURPOSE OF REVIEW: This review explores the history of serogroup B meningitis outbreaks in American universities and the rise of the monovalent serogroup B meningococcus vaccines (MenB). RECENT FINDINGS: Serogroup B meningitis represents 30% of American meningococcal infections and had no commercially available vaccine in the USA until 2013 when the FDA made an expanded allowance for importation of the MenB-4C vaccine for outbreaks at two American universities. Infections of Neisseria meningitidis, notably meningococcal meningitis represent a continued, lethal threat to the pediatric and adolescent populations and those with primary or acquired complement component deficiencies, largely mitigated by the quadrivalent meningococcal conjugated vaccine against serogroups A, C, W, and Y (MenACWY)...
September 2017: Current Infectious Disease Reports
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