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https://www.readbyqxmd.com/read/27907129/meningococcal-carriage-in-military-recruits-and-university-students-during-the-pre-menb-vaccination-era-in-greece-2014-2015
#1
Kyriaki Tryfinopoulou, Konstantinos Kesanopoulos, Athanasia Xirogianni, Nektarios Marmaras, Anastasia Papandreou, Vassiliki Papaevangelou, Maria Tsolia, Aftab Jasir, Georgina Tzanakaki
PURPOSE: The aim of the study was to estimate the meningococcal carriage rate and to identify the genotypic characteristics of the strains isolated from healthy military recruits and university students in order to provide data that might increase our understanding on the epidemiology of meningococcus and obtain information which helps to evaluate the potential effects on control programs such as vaccination. METHODS: A total of 1420 oropharyngeal single swab samples were collected from military recruits and university students on voluntary basis, aged 18-26 years...
2016: PloS One
https://www.readbyqxmd.com/read/27904879/the-establishment-and-diversification-of-epidemic-associated-serogroup-w-meningococcus-in-the-african-meningitis-belt-1994-to-2012
#2
Adam C Retchless, Fang Hu, Abdoul-Salam Ouédraogo, Seydou Diarra, Kristen Knipe, Mili Sheth, Lori A Rowe, Lassana Sangaré, Absetou Ky Ba, Soumeya Ouangraoua, Dhwani Batra, Ryan T Novak, Rasmata Ouédraogo Traoré, Xin Wang
Epidemics of invasive meningococcal disease (IMD) caused by meningococcal serogroup A have been eliminated from the sub-Saharan African so-called "meningitis belt" by the meningococcal A conjugate vaccine (MACV), and yet, other serogroups continue to cause epidemics. Neisseria meningitidis serogroup W remains a major cause of disease in the region, with most isolates belonging to clonal complex 11 (CC11). Here, the genetic variation within and between epidemic-associated strains was assessed by sequencing the genomes of 92 N...
November 2016: MSphere
https://www.readbyqxmd.com/read/27869440/immunology-update-new-vaccines
#3
S Paul Starr
A new 9-valent human papillomavirus (HPV) vaccine is effective against more cancer-causing HPV types than previous vaccines. HPV vaccine series started with previous vaccines can be completed with the 9-valent vaccine. Two new influenza vaccines are available for adults 65 years and older: a high-dose vaccine and an enhanced adjuvant vaccine. These elicit stronger antibody responses than standard-dose vaccines. Current guidelines specify no preference for the new versus standard-dose vaccines. Two new group B meningococcal vaccines are intended for use during outbreaks and for patients with asplenia, complement deficiencies, frequent occupational meningococcus exposure, or for patients who desire protection from type B meningococcus...
November 2016: FP Essentials
https://www.readbyqxmd.com/read/27862309/study-of-greek-children-and-youths-with-cystic-fibrosis-identifies-immunisation-gaps-and-delays
#4
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/27855873/household-transmission-of-neisseria-meningitidis-in-the-african-meningitis-belt-a-longitudinal-cohort-study
#5
(no author information available yet)
BACKGROUND: Information on transmission of meningococcal infection in the African meningitis belt is scarce. We aimed to describe transmission patterns of Neisseria meningitidis (meningococcus) in households in the African meningitis belt. METHODS: Cross-sectional carriage surveys were done in seven African meningitis belt countries (Chad, Ethiopia, Ghana, Mali, Niger, Nigeria, and Senegal) between Aug 1, 2010, and Oct 15, 2012. Meningococcal carriers identified in these surveys and all available people in their households were recruited into this longitudinal cohort study...
December 2016: Lancet Global Health
https://www.readbyqxmd.com/read/27784136/the-role-of-apolipoprotein-n-acyl-transferase-lnt-in-the-lipidation-of-factor-h-binding-protein-of-neisseria-meningitidis-strain-mc58-and-its-potential-as-a-drug-target
#6
Rag da Silva, C P Churchward, A V Karlyshev, O Eleftheriadou, A K Snabaitis, M R Longman, A Ryan, R Griffin
BACKGROUND AND PURPOSE: The level of cell surface expression of the meningococcal vaccine antigen, Factor H binding protein (FHbp) varies between and within strains and this limits the breadth of strains that can be targeted by FHbp-based vaccines. The molecular pathway dictating expression of FHbp at the cell surface, including its lipidation, sorting to the outer membrane and export, and the potential regulation of this pathway have not been investigated until now. This knowledge will aid our evaluation of FHbp vaccines...
October 26, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27774610/functional-antibodies-to-haemophilus-influenzae-type-b-neisseria-meningitidis-and-streptococcus-pneumoniae-contained-in-intravenous-immunoglobulin-products
#7
Soyoung Lee, Han Wool Kim, Kyung-Hyo Kim
BACKGROUND: Intravenous immunoglobulin G (IVIG) replacement therapy is used to prevent invasive infections in patients with primary antibody deficiency (PAD). However, few studies have functionally evaluated specific antibodies against encapsulated bacteria that cause invasive infection in patients with PAD. In this study, functional antibodies against Haemophilus influenzae type b (Hib), Streptococcus pneumoniae (pneumococci), and Neisseria meningitidis (meningococci) in IVIG therapy were evaluated...
October 23, 2016: Transfusion
https://www.readbyqxmd.com/read/27773490/-adapting-immunisation-schedules-for-children-undergoing-chemotherapy
#8
María Fernández-Prada, María Rodríguez-Martínez, Rebeca García-García, María Dolores García-Corte, Carmen Martínez-Ortega
INTRODUCTION: Children undergoing chemotherapy for cancer have special vaccination needs after completion of the treatment. The aim of this study was to evaluate the adaptation of post-chemotherapy vaccination schedules. METHOD: An observational study was performed on a retrospective cohort that included all children aged from 0 to 14 years, who completed chemotherapy in a tertiary hospital between 2009 and 2015. Inclusion and exclusion criteria were applied. Immunisation was administered in accordance with the guidelines of the Vaccine Advisory Committee of the Spanish Association of Paediatrics...
October 20, 2016: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/27756235/an-outbreak-of-pneumococcal-meningitis-among-older-children-%C3%A2-5%C3%A2-years-and-adults-after-the-implementation-of-an-infant-vaccination-programme-with-the-13-valent-pneumococcal-conjugate-vaccine-in-ghana
#9
Brenda Anna Kwambana-Adams, Franklin Asiedu-Bekoe, Badu Sarkodie, Osei Kuffour Afreh, George Khumalo Kuma, Godfred Owusu-Okyere, Ebenezer Foster-Nyarko, Sally-Ann Ohene, Charles Okot, Archibald Kwame Worwui, Catherine Okoi, Madikay Senghore, Jacob Kweku Otu, Chinelo Ebruke, Richard Bannerman, Kwame Amponsa-Achiano, David Opare, Gemma Kay, Timothy Letsa, Owen Kaluwa, Ebenezer Appiah-Denkyira, Victor Bampoe, Syed M A Zaman, Mark J Pallen, Umberto D'Alessandro, Jason M Mwenda, Martin Antonio
BACKGROUND: An outbreak of pneumococcal meningitis among non-infant children and adults occurred in the Brong-Ahafo region of Ghana between December 2015 and April 2016 despite the recent nationwide implementation of a vaccination programme for infants with the 13-valent pneumococcal conjugate vaccine (PCV13). METHODS: Cerebrospinal fluid (CSF) specimens were collected from patients with suspected meningitis in the Brong-Ahafo region. CSF specimens were subjected to Gram staining, culture and rapid antigen testing...
October 18, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27672084/impact-of-moderate-temperature-changes-on-neisseria-meningitidis-adhesive-phenotypes-and-proteome
#10
Martin Lappann, Andreas Otto, Madita Brauer, Dörte Becher, Ulrich Vogel, Kay Johswich
Neisseria meningitidis, the meningococcus, bears the potential of life-threatening invasive diseases, but it usually colonizes the nasopharynx without causing any symptoms. Within the nasopharynx, Neisseria meningitidis must face temperature changes depending on the ambient air temperature. Indeed, the nasopharyngeal temperature can be substantially lower than 37°C, the temperature commonly used in experimental settings. Here, we compared meningococcal biofilm formation, autoaggregation and cellular adherence between 32°C and 37°C and found a clear increase in all these phenotypes at 32°C, suggestive for a stronger in vivo colonization capability at this temperature...
September 26, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/27573216/incidence-of-respiratory-disease-during-the-first-two%C3%A2-years-of-life-in-children-with-hemodynamically-significant-congenital-heart-disease-in-italy-a-retrospective-study
#11
Giacomo Pongiglione, Alessandro Possidoni, Umberto di Luzio Paparatti, Anna Maria Costanzo, Giuliana Gualberti, Marco Bonvicini, Alessandro Rimini, Gabriella Agnoletti, Maria Pia Calabrò, Marco Pozzi, Roberto Tumbarello, Patrizia Salice, Patrizio Fiorini, Maria Giovanna Russo, Ornella Milanesi
Children affected by hemodynamically significant congenital heart disease (HSCHD) experience severe respiratory complications that can increase the frequency of hospitalizations. The aim of the SINERGY study was to describe the incidence of respiratory diseases and to collect information on active and passive immunoprophylaxis in the first 2 years of life. In this retrospective, multicenter, and epidemiologic study, children with HSCHD were enrolled across 11 Italian sites. Children born between December 31, 2007, and December 31, 2012, were observed during their first 2 years of life...
December 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27560142/thermoregulation-of-meningococcal-fhbp-an-important-virulence-factor-and-vaccine-antigen-is-mediated-by-anti-ribosomal-binding-site-sequences-in-the-open-reading-frame
#12
Edmund Loh, Hayley Lavender, Felicia Tan, Alexander Tracy, Christoph M Tang
During colonisation of the upper respiratory tract, bacteria are exposed to gradients of temperatures. Neisseria meningitidis is often present in the nasopharynx of healthy individuals, yet can occasionally cause severe disseminated disease. The meningococcus can evade the human complement system using a range of strategies that include recruitment of the negative complement regulator, factor H (CFH) via factor H binding protein (fHbp). We have shown previously that fHbp levels are influenced by the ambient temperature, with more fHbp produced at higher temperatures (i...
August 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27521232/distribution-of-bexsero%C3%A2-antigen-sequence-types-basts-in-invasive-meningococcal-disease-isolates-implications-for-immunisation
#13
Carina Brehony, Charlene M C Rodrigues, Ray Borrow, Andrew Smith, Robert Cunney, E Richard Moxon, Martin C J Maiden
Serogroup B is the only major disease-associated capsular group of Neisseria meningitidis for which no protein-polysaccharide conjugate vaccine is available. This has led to the development of multi-component protein-based vaccines that target serogroup B invasive meningococcal disease (IMD), including Bexsero®, which was implemented for UK infants in 2015, and Trumenba®. Given the diversity of meningococcal protein antigens, post-implementation surveillance of IMD isolates, including characterisation of vaccine antigens, is essential for assessing the effectiveness of such vaccines...
September 7, 2016: Vaccine
https://www.readbyqxmd.com/read/27515145/occupational-health-update-focus-on-preventing-the-acquisition-of-infections-with-pre-exposure-prophylaxis-and-postexposure-prophylaxis
#14
REVIEW
David J Weber, William A Rutala
Health care personnel are commonly exposed to infectious agents via sharp injuries (eg, human immunodeficiency virus, hepatitis B virus, and hepatitis C virus), direct patient care (eg, pertussis and meningococcus), and the contaminated environment (eg, Clostridium difficile). An effective occupational program is a key aspect of preventing acquisition of an infection by offering the following: (1) education of health care personnel regarding proper handling of sharps, early identification and isolation of potentially infectious patients, and hand hygiene; (2) assuring immunity to vaccine-preventable diseases; and, (3) immediate availability of a medical evaluation after a nonprotected exposure to an infectious disease...
September 2016: Infectious Disease Clinics of North America
https://www.readbyqxmd.com/read/27508302/epitope-mapping-of-a-monoclonal-antibody-directed-against-neisserial-heparin-binding-antigen-using-next-generation-sequencing-of-antigen-specific-libraries
#15
Maria Domina, Veronica Lanza Cariccio, Salvatore Benfatto, Mario Venza, Isabella Venza, Danilo Donnarumma, Erika Bartolini, Erica Borgogni, Marco Bruttini, Laura Santini, Angelina Midiri, Roberta Galbo, Letizia Romeo, Francesco Patanè, Carmelo Biondo, Nathalie Norais, Vega Masignani, Giuseppe Teti, Franco Felici, Concetta Beninati
We explore here the potential of a newly described technology, which is named PROFILER and is based on next generation sequencing of gene-specific lambda phage-displayed libraries, to rapidly and accurately map monoclonal antibody (mAb) epitopes. For this purpose, we used a novel mAb (designated 31E10/E7) directed against Neisserial Heparin-Binding Antigen (NHBA), a component of the anti-group B meningococcus Bexsero® vaccine. An NHBA phage-displayed library was affinity-selected with mAb 31E10/E7, followed by massive sequencing of the inserts present in antibody-selected phage pools...
2016: PloS One
https://www.readbyqxmd.com/read/27496029/serological-analysis-of-immunogenic-properties-of-recombinant-meningococcus-iga1-protease-based-proteins
#16
O V Kotelnikova, A A Zinchenko, A A Vikhrov, A P Alliluev, O V Serova, E A Gordeeva, L S Zhigis, V S Zueva, O A Razgulyaeva, T D Melikhova, E A Nokel, E Yu Drozhzhina, L D Rumsh
Using the genome sequence of IgA1 protease of N. meningitidis of serogroup B, four recombinant proteins of different structure and molecular weight were constructed. These proteins were equal in inducing the formation of specific antibodies to IgA1 protease and had protective properties against meningococci. In the sera of immunized mice, anti-IgA1 protease antibodies were detected by whole-cell ELISA, which indicated the presence of IgA1 protease on the surface of these bacteria. We hypothesized that the protective properties of IgA1 protease-based antigens and IgA1 protease analogs could be realized not only via impairment of bacterium adhesion to the mucosa, but also via suppression of this pathogen in the organism...
July 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27486197/comprehensive-identification-of-meningococcal-genes-and-small-noncoding-rnas-required-for-host-cell-colonization
#17
Elena Capel, Aldert L Zomer, Thomas Nussbaumer, Christine Bole, Brigitte Izac, Eric Frapy, Julie Meyer, Haniaa Bouzinba-Ségard, Emmanuelle Bille, Anne Jamet, Anne Cavau, Franck Letourneur, Sandrine Bourdoulous, Thomas Rattei, Xavier Nassif, Mathieu Coureuil
UNLABELLED: Neisseria meningitidis is a leading cause of bacterial meningitis and septicemia, affecting infants and adults worldwide. N. meningitidis is also a common inhabitant of the human nasopharynx and, as such, is highly adapted to its niche. During bacteremia, N. meningitidis gains access to the blood compartment, where it adheres to endothelial cells of blood vessels and causes dramatic vascular damage. Colonization of the nasopharyngeal niche and communication with the different human cell types is a major issue of the N...
2016: MBio
https://www.readbyqxmd.com/read/27456896/-neurological-presentations-of-bacterial-meningitis-in-children-current-possibilities-of-diagnosis-and-treatment
#18
L N Mazankova, O A Milovanova, D A Moiseenkova, I A Soldatova, E P Mikhalinova
AIM: To improve clinical/laboratory diagnosis of bacterial meningitis (BM) in children. MATERIAL AND METHODS: Fifty-seven patients, aged from 4 months to 12 years, with BM were examined. Bacteriological study of the mucus from the nasopharynx, sterility tests of blood and cerebrospinal fluid (CNF), clinical and biochemical tests, serological study of paired samples of plasma - indirect hemagglutination test, latex agglutination assay, immunological study of plasma and CNF with the determination of interferon -α, -β and -γ, interferon procalcitonin and neopterin with ELISA were performed at admission and after CNF remediation...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/27391881/-the-commitment-of-french-general-practitioners-to-vaccination-the-diva-study-determinants-of-vaccination-intentions
#19
Luc Martinez, Béatrice Tugaut, François Raineri, Benoit Arnould, Didier Seyler, Pascale Arnould, Khadra Benmedjahed, Guillaume Coindard, François Denis, Jean-Luc Gallais, Didier Duhot
OBJECTIVES: Vaccination is an effective way to reduce morbidity and mortality related to infectious diseases. In France, primary care physicians are the main administrators of vaccines. Our objective was to conduct an exploratory qualitative study with primary care physicians to identify determinants of their commitment to vaccination. METHODS: A qualitative research study was conducted with 36 primary care physicians from different geographical regions in France...
January 2016: Santé Publique: Revue Multidisciplinaire Pour la Recherche et L'action
https://www.readbyqxmd.com/read/27302108/exploring-host-pathogen-interactions-through-genome-wide-protein-microarray-analysis
#20
Luigi Scietti, Katia Sampieri, Irene Pinzuti, Erika Bartolini, Barbara Benucci, Alessia Liguori, Andreas F Haag, Paola Lo Surdo, Werner Pansegrau, Vincenzo Nardi-Dei, Laura Santini, Seguinde Arora, Xavier Leber, Simonetta Rindi, Silvana Savino, Paolo Costantino, Domenico Maione, Marcello Merola, Pietro Speziale, Matthew J Bottomley, Fabio Bagnoli, Vega Masignani, Mariagrazia Pizza, Meike Scharenberg, Jean-Marc Schlaeppi, Mikkel Nissum, Sabrina Liberatori
During bacterial pathogenesis extensive contacts between the human and the bacterial extracellular proteomes take place. The identification of novel host-pathogen interactions by standard methods using a case-by-case approach is laborious and time consuming. To overcome this limitation, we took advantage of large libraries of human and bacterial recombinant proteins. We applied a large-scale protein microarray-based screening on two important human pathogens using two different approaches: (I) 75 human extracellular proteins were tested on 159 spotted Staphylococcus aureus recombinant proteins and (II) Neisseria meningitidis adhesin (NadA), an important vaccine component against serogroup B meningococcus, was screened against ≈2300 spotted human recombinant proteins...
2016: Scientific Reports
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