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pneumococcal conjugate vaccine

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https://www.readbyqxmd.com/read/28318767/immunogenicity-and-safety-of-concomitant-administration-of-meningococcal-serogroup-b-4cmenb-and-serogroup-c-menc-crm-vaccines-in-infants-a-phase-3b-randomized-controlled-trial
#1
Marco Aurelio P Safadi, Federico Martinon-Torres, Lily Yin Weckx, Edson Duarte Moreira, Eduardo Jorge da Fonseca Lima, Ilhem Mensi, Marco Calabresi, Daniela Toneatto
BACKGROUND: After implementation of routine infant MenC vaccination, MenB remains a serious cause of meningococcal disease, yet to be targeted by vaccination programs in several countries. This study (NCT01339923) investigated the immunogenicity and safety of MenC CRM-conjugated vaccine (MenC-CRM) concomitantly administered with MenB vaccine (4CMenB). METHODS: Infants (N=251) were randomised 1:1 to receive 4CMenB and MenC-CRM (Group 1) or MenC-CRM alone (Group 2) at 3 and 5months (M3, M5) and a booster at 12months of age (M12), and pneumococcal vaccine at M3, M5, M7, M12...
March 15, 2017: Vaccine
https://www.readbyqxmd.com/read/28318472/antimicrobial-resistance-penicillin-binding-protein-sequences-and-pilus-islet-carriage-in-relation-to-clonal-evolution-of-streptococcus-pneumoniae-serotype-19a-in-russia-2002-2013
#2
N Mayanskiy, T Savinova, N Alyabieva, O Ponomarenko, E Brzhozovskaya, A Lazareva, L Katosova, R Kozlov
Clonal changes of serotype 19A pneumococci have been appreciated in conjunction with growing prevalence of this serotype after implementation of the seven-valent pneumococcal conjugate vaccine (PCV7). In the present study, we characterized serotype 19A pneumococci collected in Russia within a decade preceding the implementation of PCV vaccination and described their clonal evolution. We retrospectively analyzed non-invasive serotype 19A isolates collected in 2002-2013. All isolates were subjected to multilocus sequence typing, antimicrobial susceptibility testing, determination of macrolide resistance genotype, molecular detection of pilus islet (PI) carriage, sequencing of penicillin-binding protein (PBP) genes...
March 20, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28318182/pneumococcal-meningitis-in-cantabria-spain-in-the-pneumococcal-conjugate-vaccine-era-2001-2015
#3
Esther González-Escartín, Itziar Angulo López, Elsa Ots Ruiz, Luis Martínez-Martínez, María J Cabero Pérez
OBJECTIVE: To analyze the characteristics of pneumococcal meningitis in children ≤ 14 years old following the market introduction of pneumococcal conjugate vaccines in our community. METHODS: Retrospective study of pneumococcal meningitis cases with a two-period analysis: pre-13-valent pneumococcal conjugate vaccine (PCV13) (2001-2010) and post-PCV13 (2010-2015). Patient demographic and clinical data, and microbiological data were collected. RESULTS: Eighteen cases were diagnosed...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28302673/pneumococcal-vaccine-response-after-exposure-to-parasites-in-utero-in-infancy-or-mid-childhood
#4
Monica Nayakwadi Singer, Claire Heath, Jackson Muinde, Virginia Gildengorin, Francis M Mutuku, David Vu, Dunstan Mukoko, Christopher L King, Indu J Malhotra, Charles H King, A Desirée LaBeaud
BACKGROUND AND OBJECTIVE: Streptococcus pneumoniae is a leading cause of mortality before age 5, but few studies examine details of childhood response to pneumococcal vaccine in less-developed settings. Although malnutrition, HIV, and concurrent infections can impair response, evidence suggests that chronic parasitic infections can also contribute to poor vaccination results. The objective of this study was to determine whether response to pneumococcal vaccine varied among children either exposed to parasitic infections in utero, previously infected in infancy, or infected at the time of immunization...
March 16, 2017: Pediatrics
https://www.readbyqxmd.com/read/28300529/sex-differences-in-invasive-pneumococcal-disease-and-the-impact-of-pneumococcal-conjugate-vaccination-in-the-netherlands-2004-to-2015
#5
Gertjan H J Wagenvoort, Elisabeth A M Sanders, Bart J Vlaminckx, Hester E de Melker, Arie van der Ende, Mirjam J Knol
Implementation of pneumococcal conjugate vaccines in the Netherlands (PCV7 in 2006 and PCV10 in 2011) for infants caused a shift in serotypes in invasive pneumococcal disease (IPD). We explored sex differences in serotype-specific IPD incidence before and after vaccine introduction. Incidences in the pre-PCV7 (June 2004-May 2006), post-PCV7 (June 2008-May 2011) and post-PCV10 period (June 2013-May 2015), stratified by age, were compared. Incidence was higher in men for all age groups (overall in men: 16.7, 15...
March 9, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28292980/streptococcus-pneumoniae-transmission-is-blocked-by-type-specific-immunity-in-an-infant-mouse-model
#6
Tonia Zangari, Yang Wang, Jeffrey N Weiser
Epidemiological studies on Streptococcus pneumoniae show that rates of carriage are highest in early childhood and that the major benefit of the pneumococcal conjugate vaccine (PCV) is a reduction in the incidence of nasopharyngeal colonization through decreased transmission within a population. In this study, we sought to understand how anti-S. pneumoniae immunity affects nasal shedding of bacteria, the limiting step in experimental pneumococcal transmission. Using an infant mouse model, we examined the role of immunity (passed from mother to pup) on shedding and within-litter transmission of S...
March 14, 2017: MBio
https://www.readbyqxmd.com/read/28288018/cost-effectiveness-of-the-13-valent-pneumococcal-conjugate-vaccine-in-children-in-portugal
#7
Miguel Gouveia, Francesca Fiorentino, Gonçalo Jesus, João Costa, Margarida Borges
INTRODUCTION: Pneumococcal infections are the leading cause of vaccine-preventable death in children. In June 2015, the 13-valent pneumococcal conjugate vaccine (PCV13) was introduced in the Portuguese Immunization Program. We evaluate the cost-effectiveness of children vaccination with PCV13 versus no vaccination for preventing pneumococcal diseases (PD). METHOD: A cohort simulation model for 2014 Portuguese newborns was used, considering a lifetime horizon and existence of herd effect on adults...
March 10, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28284682/childhood-pneumococcal-disease-in-africa-a-systematic-review-and-meta-analysis-of-incidence-serotype-distribution-and-antimicrobial-susceptibility
#8
REVIEW
Pui-Ying Iroh Tam, Beth K Thielen, Stephen K Obaro, Ann M Brearley, Alexander M Kaizer, Haitao Chu, Edward N Janoff
BACKGROUND: Determining the incidence, disease-associated serotypes and antimicrobial susceptibility of invasive pneumococcal disease (IPD) among children in Africa is essential in order to monitor the impact of these infections prior to widespread introduction of the pneumococcal conjugate vaccine (PCV). METHODS: To provide updated estimates of the incidence, serotype distribution, and antimicrobial susceptibility profile of Streptococcus pneumoniae causing disease in Africa, we performed a systematic review of articles published from 2000 to 2015 using Ovid Medline and Embase...
March 8, 2017: Vaccine
https://www.readbyqxmd.com/read/28283611/bacteremia-in-children-3-to-36-months-old-after-introduction-of-conjugated-pneumococcal-vaccines
#9
Tara L Greenhow, Yun-Yi Hung, Arnd Herz
BACKGROUND AND OBJECTIVES: In June 2010, Kaiser Permanente Northern California replaced all 7-valent pneumococcal conjugate vaccine (PCV7) vaccines with the 13-valent pneumococcal conjugate vaccine (PCV13). Our objectives were to compare the incidence of bacteremia in children 3 to 36 months old by 3 time periods: pre-PCV7, post-PCV7/pre-PCV13, and post-PCV13. METHODS: We designed a retrospective review of the electronic medical records of all blood cultures collected on children 3 to 36 months old at Kaiser Permanente Northern California from September 1, 1998 to August 31, 2014 in outpatient clinics, in emergency departments, and in the first 24 hours of hospitalization...
March 10, 2017: Pediatrics
https://www.readbyqxmd.com/read/28281094/clinical-features-and-inflammatory-markers-in-pediatric-pneumonia-a-prospective-study
#10
Are Stuwitz Berg, Christopher Stephen Inchley, Hans Olav Fjaerli, Truls Michael Leegaard, Morten Lindbaek, Britt Nakstad
In this prospective, observational study on previously healthy children <18 years, we aimed to study the diagnostic ability of clinical features and inflammatory markers to (i) predict pathologic chest radiography in suspected pneumonia and (ii) differentiate etiology in radiological proven pneumonia. In 394 cases of suspected pneumonia, 265 (67%) had radiographs consistent with pneumonia; 34/265 had proof of bacterial etiology. Of the cases, 86.5% had received pneumococcal conjugate vaccine. In suspected pneumonia, positive chest radiography was significantly associated with increasing C-reactive protein (CRP) values, higher age, and SpO2 ≤92% in multivariate logistic regression, OR 1...
March 9, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28279564/pneumococcal-carriage-and-serotype-variation-before-and-after-introduction-of-pneumococcal-conjugate-vaccines-in-patients-with-acute-otitis-media-in-switzerland
#11
Aurélie Allemann, Pascal M Frey, Silvio D Brugger, Markus Hilty
BACKGROUND: Acute otitis media (AOM) is an important cause for antibiotic prescription within the paediatric population and Streptococcus pneumoniae is a major pathogen associated with AOM episodes. This study aimed at analysing the influence of the heptavalent and 13-valent pneumococcal conjugate vaccines (PCV7 and PCV13) on pneumococcal carriage and serotype distribution in AOM. METHODS: Nasopharyngeal swabs (NPS) and middle ear fluid (MEF) were collected within a Swiss surveillance study of outpatients from all ages with AOM between 2004 and 2015, covering three vaccination eras (pre-PCV7, PCV7 and PCV13)...
March 6, 2017: Vaccine
https://www.readbyqxmd.com/read/28275739/rapid-kinetics-of-serum-iga-after-vaccination-with-prevnar-%C3%A2-13-followed-by-pneumovax-%C3%A2-23
#12
Rebecca R Crowther, Christine M Collins, Cheryl Conley, Osvaldo J Lopez
Streptococcus pneumoniae is a causative agent of community-acquired pneumonias. The recommendations of the 2012 Advisory Committee on Immunization Practices include vaccination with Prevnar(®)13 (protein-polysaccharide conjugate vaccine; PCV), followed by Pneumovax(®)23 (polysaccharide-based vaccine; PSV) in adults 65+ or the immunocompromised. In this experiment, a group of 4 healthy volunteers were vaccinated with PCV followed by PSV 60 days later. ELISAs were optimized to study kinetics of IgA, IgM, total IgG and its four subclasses against 14 polysaccharides of the pneumococcal capsule...
February 2017: Heliyon
https://www.readbyqxmd.com/read/28264733/pneumococcal-nasopharyngeal-carriage-among-children-in-brazil-prior-to-the-introduction-of-the-10-valent-conjugate-vaccine-a-culture-and-pcr-based-survey
#13
H G Rodrigues, T C A Pinto, R R Barros, L M Teixeira, F P G Neves
We performed two different approaches (broth enrichment step prior to culture (BEC) and PCR (BEPCR)) for detecting Streptococcus pneumoniae from nasopharyngeal specimens collected from 242 children aged <6 years attending one hospital (n = 140) and one childcare centre (n = 102) in a major urban area in Brazil. These specimens were collected immediately before the introduction of the 10-valent pneumococcal conjugate vaccine (PCV10) and the 13-valent vaccine (PCV13) for routine use in Brazil. Results were compared with previous findings obtained with direct culture (DC) on a selective medium...
March 7, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28262532/the-distribution-and-annual-changes-in-the-streptococcus-pneumoniae-serotypes-in-adult-japanese-patients-with-pneumococcal-pneumonia-from-2011-to-2015
#14
Kentaro Akata, Bin Chang, Kazuhiro Yatera, Toshinori Kawanami, Keisuke Naito, Shingo Noguchi, Takashi Kido, Hiroshi Mukae
BACKGROUND: We previously reported a decrease in the vaccine serotypes of a 7-valent pneumococcal conjugate vaccine (PCV7) and pneumococcal polysaccharide vaccine (PPSV) 23 in adult pneumonia patients after starting PCV7 vaccination in children in Japan between 2011 and 2013, suggesting that the vaccination of children had an indirect effect on adults. PCV7 was replaced by PCV13 in 2013 and was authorized for individuals ≥65 in 2014; vaccination with PPSV23 has been routinely implemented since the same year...
March 2, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28262330/a-randomized-study-of-fever-prophylaxis-and-the-immunogenicity-of-routine-pediatric-vaccinations
#15
Jacek Wysocki, Kimberly J Center, Jerzy Brzostek, Ewa Majda-Stanislawska, Henryk Szymanski, Leszek Szenborn, Hanna Czajka, Barbara Hasiec, Jerzy Dziduch, Teresa Jackowska, Anita Witor, Elżbieta Kopińska, Ryszard Konior, Peter C Giardina, Vani Sundaraiyer, Scott Patterson, William C Gruber, Daniel A Scott, Alejandra Gurtman
OBJECTIVE: Prophylactic antipyretic use during pediatric vaccination is common. This study assessed whether paracetamol or ibuprofen prophylaxis interfere with immune responses to the 13-valent pneumococcal conjugate vaccine (PCV13) given concomitantly with the combined DTaP/HBV/IPV/Hib vaccine. METHODS: Subjects received prophylactic paracetamol or ibuprofen at 0, 6-8, and 12-16 h after vaccination, or 6-8 and 12-16 h after vaccination at 2, 3, 4, and 12months of age...
March 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28251510/risk-factors-for-drug-resistant-cap-in-immunocompetent-patients
#16
REVIEW
Francisco Arancibia, Mauricio Ruiz
PURPOSE OF REVIEW: The increase in drug-resistant community-acquired pneumonia (CAP) is an important problem all over the world. This article explores the current state of antimicrobial resistance of different bacteria that cause CAP and also assesses risk factors to identify those pathogens. RECENT FINDINGS: In the last two decades, it has been documented that there is a significant increase in drug-resistant Streptococcus pneumoniae and other bacteria causing CAP...
March 2017: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/28251028/empyema-due-to-streptococcus-pneumoniae-serotype-9v-in-a-child-immunized-with-13-valent-conjugated-pneumococcal-vaccine
#17
Murat Sütçü, Hacer Aktürk, Fatih Karagözlü, Ayper Somer, Nezahat Gürler, Nuran Salman
BACKGROUND: Clinical vaccine failure is the occurence of the specific vaccine-preventable disease in an appropriately and fully vaccinated person after enough time has elapsed for protection against the antigens of the vaccine to develop. Fully immunized cases with pneumoccal vaccine may sometimes develop a complicated pneumonia with empyema caused by a vaccine serotype. CASE REPORT: A 2 year-old male patient was admitted with the complaints of fever. On the basis of findings and laboratory results, the patient was diagnosed as having empyema...
January 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28249015/impact-of-ten-valent-pneumococcal-conjugate-vaccine-on-pneumonia-in-finnish-children-in-a-nation-wide-population-based-study
#18
Arto A Palmu, Hanna Rinta-Kokko, Hanna Nohynek, J Pekka Nuorti, Terhi M Kilpi, Jukka Jokinen
BACKGROUND: The ten-valent pneumococcal conjugate vaccine (PCV10) was introduced into the Finnish National Vaccination Program (NVP) in September 2010 using a 2+1 schedule (3, 5, 12 months). We estimated the direct and indirect effects of PCV10 on pneumonia among children to evaluate the public health impact of the vaccine. METHODS: We conducted a nation-wide population-based, observational study comparing rates of pneumonia in children before and after the NVP introduction...
2017: PloS One
https://www.readbyqxmd.com/read/28244176/can-infant-vaccination-prevent-pneumococcal-meningitis-outbreaks-in-sub-saharan-africa
#19
EDITORIAL
James M Stuart
The WHO Strategic Advisory Group of Experts is reviewing the technical evidence to inform policy on optimal use of infant pneumococcal conjugate vaccines (PCV)(1). Since 2010, multivalent vaccines (PCV-10, PCV-13) have been successfully introduced with the support of Gavi the Vaccine Alliance into infant immunisation programmes across the developing world(2). One recommended schedule consists of three doses under the age of 6 months (3+0), with the aim of providing maximum protection to infants, the age group at highest risk of pneumococcal disease(3)...
February 28, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28242069/conjugation-of-peg-hexadecane-markedly-increases-the-immunogenicity-of-pneumococcal-polysaccharide-conjugate-vaccine
#20
Xin Chang, Weili Yu, Shaoyang Ji, Lijuan Shen, Aijuan Tan, Tao Hu
Streptococcus pneumoniae is a serious Gram-positive pathogen that can lead to an invasive pneumococcal disease with high mortality rate. Pneumococcal capsular polysaccharide (PS) is a key virulence determinant and its immunogenicity can be increased by conjugation with a carrier protein. However, the PS-specific cellular and humoral immunity of pneumococcal conjugate vaccine needs further improvement. Hexadecane (HD) is an element of lipid that decorates the surface of nearly all microbial classes. Polyethylene glycol (PEG)-HD conjugate (PEG-HD) is soluble and can act as an adjuvant...
February 24, 2017: Vaccine
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