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pneumococcal pneumonia in Children

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https://www.readbyqxmd.com/read/28453405/a-meta-analysis-of-antimicrobial-susceptibility-profiles-for-pneumococcal-pneumonia-in-sub-saharan-africa
#1
Pui-Ying Iroh Tam, Ayebo E Sadoh, Stephen K Obaro
BACKGROUND: Pneumonia causes an enormous burden of childhood disease globally, particularly in low- and middle-income countries. Pneumococcus is the most common bacterial aetiology of pneumonia; however, antimicrobials are limited and may not adequately address the local epidemiology of the region. AIM: To undertake a review and meta-analysis of pneumonia studies in sub-Saharan Africa to evaluate antimicrobial susceptibility patterns in childhood pneumonia. METHODS: Articles published in PubMed and Google between 2006 and 2016 which evaluated antimicrobial susceptibility profiles of pneumococcal pneumonia in children in sub-Saharan Africa were identified...
April 28, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28443585/pneumococcal-nasopharyngeal-carriage-in-young-healthy-children-after-pneumococcal-conjugate-vaccine-in-turkey
#2
Ahmet Arvas, Haluk Çokuğraş, Emel Gür, Nevriye Gönüllü, Zeynep Taner, Hrisi Bahar Tokman
AIMS: The purpose of this study was to determine the prevalence of nasopharyngeal carriage of Streptococcus pneumoniae in healthy children aged 0-6 years who were vaccinated with pneumococcal conjugate vaccine. METHODS: The cross-sectional study was conducted on 150 healthy Turkish children aged between 1 month and 6 years of age. Serotyping was performed and risk factors of carriage were evaluated. RESULTS: The overall carriage rate was 14%...
April 13, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28422083/nasopharyngeal-carriage-and-antimicrobial-susceptibility-patterns-of-streptococcus-pneumoniae-among-children-under-five-in-southwest-ethiopia
#3
Tiglu Gebre, Mulualem Tadesse, Dossegnaw Aragaw, Dagne Feye, Habtamu Bedimo Beyene, Dinberu Seyoum, Mekidim Mekonnen
Nasopharyngeal carriage of Streptococcus pneumoniae is found to play an important role in the development and transmission of pneumococcal diseases. In this study, we assessed the nasopharyngeal carriage, antimicrobial susceptibility patterns and associated risk factors of S. pneumoniae among children under five. A total of 361 children under five attending the outpatient department of Shanan Gibe Hospital in Jimma, Southwest Ethiopia were enrolled from June to September 2014. Nasopharyngeal specimens were collected using sterile plastic applicator rayon tipped swab and inoculated on tryptone soy agar supplemented with 5% sheep blood and 5 µg/mL gentamycin...
April 19, 2017: Children
https://www.readbyqxmd.com/read/28419005/clinical-utility-of-polymerase-chain-reaction-testing-for-streptococcus-pneumoniae-in-pediatric-cerebrospinal-fluid-samples-a-diagnostic-accuracy-study-of-more-than-2000-samples-from-2004-2015
#4
Abdullah Alqayoudhi, Maryke Nielsen, Nicola O'Sullivan, Mary Corcoran, Patrick J Gavin, Karina M Butler, Robert Cunney, Richard J Drew
The aim of this retrospective study was to review the diagnostic accuracy of real-time polymerase chain reaction (PCR) testing of cerebrospinal fluid (CSF) samples for Streptococcus pneumoniae DNA in comparison with traditional bacterial culture. The hypothesis was that PCR is more sensitive than culture and would detect more cases of pneumococcal meningitis, particularly in children treated with antimicrobials before CSF sampling occurred. Patients younger than 16 years who had a CSF sample tested for S.pneumoniae DNA by PCR between 2004 and 2015 were included...
April 17, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28414696/decrease-in-pneumococcal-otitis-media-cultures-with-concomitant-increased-antibiotic-susceptibility-in-the-pneumococcal-conjugate-vaccines-era
#5
Basel Jabarin, Jacob Pitaro, Tzilia Lazarovitch, Haim Gavriel, Limor Muallem-Kalmovich, Ephraim Eviatar, Tal Marom
OBJECTIVE: To study the change in the incidence and antibiotic susceptibility patterns of Streptococcus pneumoniae (Spn) in cultures obtained from children with otitis media (OM) during the pneumococcal conjugate vaccines (PCVs) era. STUDY DESIGN: Retrospective. SETTING: Secondary medical care center. PATIENTS: Children less than 8 years who presented with OM and had positive pneumococcal cultures during January 1, 2007 to December 12, 2014 were identified...
April 13, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28414567/disease-burden-of-community-acquired-pneumonia-among-children-under-5%C3%A2-y-old-in-china-a-population-based-survey
#6
Yan Li, Zhijie An, Dapeng Yin, Yanmin Liu, Zhuoying Huang, Yujie Ma, Hui Li, Qi Li, Huaqing Wang
BACKGROUND: To obtain the baseline data on the incidence and cost of community acquired pneumonia among under-5 children for future studies, and provide evidence for shaping China's strategies regarding pneumococcal conjugate vaccine (PCV). METHODS: Three townships from Heilongjiang, Hebei and Gansu Province and one community in Shanghai were selected as study areas. A questionnaire survey was conducted to collect data on incidence and cost of pneumonia among children under 5 y old in 2012...
April 17, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28409537/impact-of-pneumococcal-conjugate-vaccines-for-children-in-high-and-non-high-income-countries
#7
Robert Cohen, Jérémie François Cohen, Martin Chalumeau, Corinne Levy
The high level of effectiveness of pneumococcal conjugate vaccines (PCVs) was demonstrated initially in high-income countries (HICs). However, because the burden of pneumococcal diseases (PDs) is greater in non-high-income countries (NHICs) than HICs, the assessment of these vaccines in this latter setting is crucial. Areas Covered: PubMed was used to search for literature related to the effectiveness of PCVs. Several studies described the effectiveness of PCVs in NHICs, and we compare the impact of PCVs on the incidence of invasive pneumococcal disease (IPD) and pneumonia in HICs and NHICs...
April 14, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28392142/memory-b-cell-response-to-a-pcv-13-booster-in-3-5year-old-children-primed-with-either-pcv-7-or-pcv-13
#8
Johannes Trück, Amber Thompson, Begonia Morales-Aza, Elizabeth A Clutterbuck, Merryn Voysey, Ed Clarke, Matthew D Snape, Dominic F Kelly, Adam Finn, Andrew J Pollard
Pneumococcal protein-polysaccharide conjugate vaccines provide direct protection against Streptococcus pneumoniae through the induction of persistent anti-polysaccharide antibodies, and by priming for a rapid secondary antibody response. Memory B cells (BMEM) generated during an initial immune response are responsible for both the more rapid and quantitatively greater secondary antibody response and are also thought to contribute to the ongoing production of plasma cells providing long-term antibody persistence...
May 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28389097/efficacy-of-a-novel-protein-based-pneumococcal-vaccine-against-nasopharyngeal-carriage-of-streptococcus-pneumoniae-in-infants-a-phase-2-randomized-controlled-observer-blind-study
#9
Aderonke Odutola, Martin O C Ota, Martin Antonio, Ezra O Ogundare, Yauba Saidu, Ebenezer Foster-Nyarko, Patrick K Owiafe, Fatima Ceesay, Archibald Worwui, Olubukola T Idoko, Olumuyiwa Owolabi, Abdoulie Bojang, Sheikh Jarju, Isatou Drammeh, Beate Kampmann, Brian M Greenwood, Mark Alderson, Magali Traskine, Nathalie Devos, Sonia Schoonbroodt, Kristien Swinnen, Vincent Verlant, Kurt Dobbelaere, Dorota Borys
BACKGROUND: Conserved pneumococcal proteins are potential candidates for inclusion in vaccines against pneumococcal diseases. In the first part of a two-part study, an investigational vaccine (PHiD-CV/dPly/PhtD-30) containing 10 pneumococcal serotype-specific polysaccharide conjugates (10VT) combined with pneumolysin toxoid and pneumococcal histidine triad protein D (30μg each) was well tolerated by Gambian children. Part two, presented here, assessed the efficacy of two PHiD-CV/dPly/PhtD formulations against pneumococcal nasopharyngeal carriage (NPC) prevalence in infants...
April 4, 2017: Vaccine
https://www.readbyqxmd.com/read/28376809/molecular-characterization-of-penicillin-non-susceptible-streptococcus-pneumoniae-isolated-before-and-after-pneumococcal-conjugate-vaccine-implementation-in-casablanca-morocco
#10
Idrissa Diawara, Abouddihaj Barguigua, Khalid Katfy, Kaotar Nayme, Houria Belabbes, Mohammed Timinouni, Khalid Zerouali, Naima Elmdaghri
BACKGROUND: Streptococcus pneumoniae is a major cause of morbidity and mortality worldwide, especially among children and the elderly. The ability to effectively treat pneumococcal infection has been compromised due to the acquisition of antibiotic resistance, particularly to β-lactam drugs. This study aimed to describe the prevalence and molecular evolution of penicillin non-susceptible S. pneumoniae (PNSP) isolated from invasive diseases before and after pneumococcal conjugate vaccine implementation in Casablanca, Morocco...
April 4, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28368460/the-capacity-of-pneumococci-to-activate-macrophage-nf-kb-determines-necroptosis-and-pneumonia-severity
#11
Fadie T Coleman, Matthew T Blahna, Hirofumi Kamata, Kazuko Yamamoto, Mary C Zabinski, Igor Kramnik, Andrew A Wilson, Darrell N Kotton, Lee J Quinton, Matthew R Jones, Stephen I Pelton, Joseph P Mizgerd
During pneumococcal pneumonia, antibacterial defense requires the orchestrated expression of innate immunity mediators, initiated by alveolar macrophages and dependent on transcription driven by Nuclear Factor-kB (NF-kB). Such immune pressure may select for pneumococci which avoid or subvert macrophage NF-kB activation. Analyzing pneumococci collected from children in Massachusetts, we find that the activation of macrophage NF-kB by S. pneumoniae is highly diverse, with a preponderance of low NF-kB activators that associate particularly with complicated pneumonia...
March 25, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28367876/serotype-replacement-in-adult-pneumococcal-pneumonia-after-the-introduction-of-seven-valent-pneumococcal-conjugate-vaccines-for-children-in-japan-a-systematic-literature-review-and-pooled-data-analysis
#12
Shungo Katoh, Motoi Suzuki, Koya Ariyoshi, Konosuke Morimoto
Streptococcus pneumoniae is a major causative agent of adult pneumonia. Following the introduction of pneumococcal conjugate vaccines (PCV) for children, serotype replacement has been reported in adult invasive pneumococcal diseases, but it has not been well-studied for adult pneumococcal pneumonia cases in Asia. To investigate serotype replacement in adult pneumococcal pneumonia in Japan, we conducted a systematic literature search across five databases using terms including pneumococcus, serotype, and their synonyms and derivatives...
March 28, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28359798/effect-of-high-valency-pneumococcal-conjugate-vaccines-on-invasive-pneumococcal-disease-in-children-in-spidnet-countries-an-observational-multicentre-study
#13
Camelia Savulescu, Pavla Krizova, Agnes Lepoutre, Jolita Mereckiene, Didrik F Vestrheim, Pilar Ciruela, Maria Ordobas, Marcela Guevara, Eisin McDonald, Eva Morfeldt, Jana Kozakova, Emmanuelle Varon, Suzanne Cotter, Brita A Winje, Carmen Munoz-Almagro, Luis Garcia, Jesus Castilla, Andrew Smith, Birgitta Henriques-Normark, Lucia Pastore Celentano, Germaine Hanquet
BACKGROUND: The Streptococcus pneumoniae Invasive Disease network (SpIDnet) actively monitors populations in nine sites in seven European countries for invasive pneumococcal disease. Five sites use 13-valent pneumococcal conjugate vaccine (PCV13) alone and four use the ten-valent PCV (PCV10) and PCV13. Vaccination uptake is greater than 90% in six sites and 67-78% in three sites. We measured the effects of introducing high-valency PCVs on the incidence of invasive pneumococcal disease in children younger than 5 years...
March 27, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28344805/utilization-of-cholera-toxin-b-as-a-mucosal-adjuvant-elicits-antibody-mediated-protection-against-s-pneumoniae-infection-in-mice
#14
Kari Wiedinger, Daniel Pinho, Constantine Bitsaktsis
BACKGOUND: The introduction of the pneumococcal conjugate and polysaccharide vaccines have been valuable tools for combating invasive pneumococcal infection in children and healthy adults. Despite the available vaccination strategies, pneumococcal pneumonia and associated diseases continue to cause substantial morbidity and mortality, particularly in individuals with chronic disease and ageing populations. Next-generation pneumococcal vaccines will need to be highly immunogenic across patient populations providing both mucosal and systemic protective immunity...
February 2017: Therapeutic Advances in Vaccines
https://www.readbyqxmd.com/read/28339727/rapid-decrease-in-rates-of-hospitalization-resulting-from-invasive-pneumococcal-disease-and-community-acquired-pneumonia-in-children-aged-60-months-after-13-valent-pneumococcal-conjugate-vaccine-introduction-in-argentina
#15
Eduardo L López, Eduardo Glatstein, Gustavo C Ezcurra, Marisa Iacono, Eduardo Teplitz, Analía V Garnero, Daniela L Lazzarini, Miryan Vázquez, María M Contrini
Background.: In January 2012, Argentina included universal pneumococcal vaccination in the routine childhood vaccination program using a 13-valent pneumococcal conjugate vaccine (PCV13). A 2 + 1 schedule (2 doses in the first year of life and a booster dose at 12 months of age) in children aged <2 years and 2-dose catch-up immunization in children aged 13 to 24 months was administered during the first year of vaccine introduction. The purpose of this study was to assess the burdens of invasive pneumococcal disease (IPD) and/or community-acquired pneumonia (CAP) in hospitalized children younger than 5 years during the first 2 years of the program compared to those in the prevaccination period in our setting...
February 23, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28318766/bacille-calmette-gu%C3%A3-rin-bcg-vaccination-at-birth-and-antibody-responses-to-childhood-vaccines-a-randomised-clinical-trial
#16
Thomas Nørrelykke Nissen, Nina Marie Birk, Gaby Smits, Dorthe Lisbeth Jeppesen, Lone Graff Stensballe, Mihai G Netea, Fiona van der Klis, Christine Stabell Benn, Ole Pryds
INTRODUCTION: BCG vaccination has been associated with beneficial non-specific effects on child health. Some immunological studies have reported heterologous effects of vaccines on antibody responses to heterologous vaccines. Within a randomised clinical trial of Bacille Calmette-Guérin (BCG) vaccination at birth, The Danish Calmette Study, we investigated the effect of BCG at birth on the antibody response to the three routine vaccines against DiTeKiPol/Act-Hib and Prevenar 13 in a subgroup of participants...
March 15, 2017: Vaccine
https://www.readbyqxmd.com/read/28302673/pneumococcal-vaccine-response-after-exposure-to-parasites-in-utero-in-infancy-or-mid-childhood
#17
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/28292980/streptococcus-pneumoniae-transmission-is-blocked-by-type-specific-immunity-in-an-infant-mouse-model
#18
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/28284682/childhood-pneumococcal-disease-in-africa-a-systematic-review-and-meta-analysis-of-incidence-serotype-distribution-and-antimicrobial-susceptibility
#19
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...
April 4, 2017: Vaccine
https://www.readbyqxmd.com/read/28283611/bacteremia-in-children-3-to-36-months-old-after-introduction-of-conjugated-pneumococcal-vaccines
#20
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
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