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Pneumococcal invasive disease

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https://www.readbyqxmd.com/read/27913372/an-ehealth-project-on-invasive-pneumococcal-disease-comprehensive-evaluation-of-a-promotional-campaign
#1
Donatella Panatto, Alexander Domnich, Roberto Gasparini, Paolo Bonanni, Giancarlo Icardi, Daniela Amicizia, Lucia Arata, Stefano Carozzo, Alessio Signori, Angela Bechini, Sara Boccalini
BACKGROUND: The recently launched Pneumo Rischio eHealth project, which consists of an app, a website, and social networking activity, is aimed at increasing public awareness of invasive pneumococcal disease (IPD). The launch of this project was prompted by the inadequate awareness of IPD among both laypeople and health care workers, the heavy socioeconomic burden of IPD, and the far from optimal vaccination coverage in Italy, despite the availability of safe and effective vaccines. OBJECTIVE: The objectives of our study were to analyze trends in Pneumo Rischio usage before and after a promotional campaign, to characterize its end users, and to assess its user-rated quality...
December 2, 2016: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/27905836/invasive-pneumococcal-disease-from-a-tertiary-care-hospital-in-the-post-vaccine-era
#2
Sevgen Tanır Basaranoglu, Eda Karadag Oncel, Kubra Aykac, Yasemin Ozsurekci, Ali Bulent Cengiz, Ates Kara, Mehmet Ceyhan
A breakthrough infection occurring with 13-valent pneumococcal conjugate vaccine (PCV13) in Turkey are previously described. A breakthrough infection is defined as IPD in a child who had received ≥1 PCV-7 or PCV-13 and for which the pneumococcal isolate was a vaccine serotype. During one year period, among six patients with invasive pneumococcal infection, two patients were considered to have a vaccine failure with serotype 19F. Antibiotic resistance results were remarkable; macrolide resistance were observed in all strains except one, and high and intermediate penicillin resistance were determined in two strains...
December 1, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27903558/cost-effectiveness-analysis-of-routine-pneumococcal-vaccination-in-the-uk-a-comparison-of-the-phid-cv-vaccine-and-the-pcv-13-vaccine-using-a-markov-model
#3
Emmanuelle Delgleize, Oscar Leeuwenkamp, Eleni Theodorou, Nicolas Van de Velde
OBJECTIVES: In 2010, the 13-valent pneumococcal conjugate vaccine (PCV-13) replaced the 7-valent vaccine (introduced in 2006) for vaccination against invasive pneumococcal diseases (IPDs), pneumonia and acute otitis media (AOM) in the UK. Using recent evidence on the impact of PCVs and epidemiological changes in the UK, we performed a cost-effectiveness analysis (CEA) to compare the pneumococcal non-typeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) with PCV-13 in the ongoing national vaccination programme...
November 30, 2016: BMJ Open
https://www.readbyqxmd.com/read/27902652/circulating-antibody-1-and-2-years-after-vaccination-with-the-13-valent-pneumococcal-conjugate-vaccine-in-preterm-compared-with-term-infants
#4
Federico Martinón-Torres, Jacek Wysocki, Kimberly J Center, Hanna Czajka, Ewa Majda-Stanislawska, Felix Omeñaca, Ana Concheiro-Guisan, Francisco Gimenez-Sanchez, Leszek Szenborn, Daniel Blázquez-Gamero, Laura Moreno-Galarraga, Peter C Giardina, Gang Sun, William C Gruber, Daniel A Scott, Alejandra Gurtman
BACKGROUND: Premature infants have lower short-term immune responses to vaccination than term infants, but patterns of antibody persistence in preterm infants over longer periods are not well established. This study assessed the persistence of antibody response to the 13-valent pneumococcal conjugate vaccine (PCV13) in formerly preterm versus term infants. METHODS: In total, 100 preterm and 100 term infants received PCV13 with routine vaccines at ages 2, 3, 4, and 12 months...
November 28, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27895845/a-trial-of-a-7-valent-pneumococcal-conjugate-vaccine-in-hiv-infected-adults
#5
Neil French, Stephen B Gordon, Thandie Mwalukomo, Sarah A White, Gershom Mwafulirwa, Herbert Longwe, Martin Mwaiponya, Eduard E Zijlstra, Malcolm E Molyneux, Charles F Gilks
BACKGROUND: Streptococcus pneumoniae is a leading and serious coinfection in adults with human immunodeficiency virus (HIV) infection, particularly in Africa. Prevention of this disease by vaccination with the current 23-valent polysaccharide vaccine is suboptimal. Protein conjugate vaccines offer a further option for protection, but data on their clinical efficacy in adults are needed. METHODS: In this double-blind, randomized, placebo-controlled clinical efficacy trial, we studied the efficacy of a 7-valent conjugate pneumococcal vaccine in predominantly HIV-infected Malawian adolescents and adults who had recovered from documented invasive pneumococcal disease...
September 2016: Malawi Medical Journal: the Journal of Medical Association of Malawi
https://www.readbyqxmd.com/read/27892961/host-derived-extracellular-rna-promotes-adhesion-of-streptococcus-pneumoniae-to-endothelial-and-epithelial-cells
#6
Dariusz Zakrzewicz, Simone Bergmann, Miroslava Didiasova, Benedetto Daniele Giaimo, Tilman Borggrefe, Maren Mieth, Andreas C Hocke, Guenter Lochnit, Liliana Schaefer, Sven Hammerschmidt, Klaus T Preissner, Malgorzata Wygrecka
Streptococcus pneumoniae is the most frequent cause of community-acquired pneumonia. The infection process involves bacterial cell surface receptors, which interact with host extracellular matrix components to facilitate colonization and dissemination of bacteria. Here, we investigated the role of host-derived extracellular RNA (eRNA) in the process of pneumococcal alveolar epithelial cell infection. Our study demonstrates that eRNA dose-dependently increased S. pneumoniae invasion of alveolar epithelial cells...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27847379/emergence-of-multidrug-resistant-pneumococcal-serotype-35b-among-u-s-children
#7
Liset Olarte, Sheldon L Kaplan, William J Barson, José R Romero, Philana Ling Lin, Tina Q Tan, Jill A Hoffman, John S Bradley, Laurence B Givner, Edward O Mason, Kristina G Hultén
Streptococcus pneumoniae serotype 35B is a nonvaccine serotype associated with high rates of penicillin nonsusceptibility. An increase in the proportion of multidrug-resistant (MDR) 35B isolates has been recently reported. The genetic events contributing to the emergence of MDR serotype 35B are unknown.The sequence type (ST) composition of 78 serotype 35B isolates obtained from pediatric patients with invasive pneumococcal disease from 1994 to 2014, and 48 isolates from pediatric patients with otitis media (noninvasive) from 2011 to 2014 was characterized by multilocus sequence typing (MLST)...
November 9, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27832020/invasive-pneumococcal-disease-in-children-in-tonga
#8
Flora Lutui, Cameron C Grant, Emma Best, Stephen Howie, George Aho
In Tonga pneumococcal conjugate vaccine (PCV) is not a scheduled immunization. We identified all children in Tonga with invasive pneumococcal disease (IPD) from 2010-2013. The average annual IPD incidence rate was 113/100,000 (<2 years), 50/100,000 (<5 years) and 25/100,000 (<15 years). The case-fatality rate (<5 years) was 25%. The incidence rate and high case-fatality rate indicate the need for PCV.
November 8, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27831604/-epidemiologic-clinical-and-bacteriologic-characteristics-of-pneumococcal-meningitis-in-pediatric-patients-from-lima-peru
#9
Long Davalos, Yessica Terrazas, Ana Quintana, Martha Egoavil, Katherine Sedano, María E Castillo, Isabel Reyes, Eduardo Chaparro, Wilda Silva, Francisco Campos, Andrés Saenz, Roger Hernandez, Olguita Del Águila, Daniel Guillén Pinto, Theresa J Ochoa
Objectives.: To describe the clinical characteristics, lethality, antibiotic susceptibility, and serotype distribution of pneumococcal meningitis in pediatric patients in Lima, Peru. Materials and Methods.: A case series of pneumococcal meningitis in children less than 16 years of age from two prospective, multicenter, passive surveillance studies of invasive pneumococcal diseases held in Lima-Peru from 2006 to 2008 and 2009 to 2011. Results.: We report 44 pneumococcal meningitis episodes; 68...
July 2016: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/27829063/pneumococcal-carriage-in-children-under-five-years-in-uganda-will-present-pneumococcal-conjugate-vaccines-be-appropriate
#10
Ann Lindstrand, Joan Kalyango, Tobias Alfvén, Jessica Darenberg, Daniel Kadobera, Freddie Bwanga, Stefan Peterson, Birgitta Henriques-Normark, Karin Källander
BACKGROUND: Pneumonia is the major cause of death in children globally, with more than 900,000 deaths annually in children under five years of age. Streptococcus pneumoniae causes most deaths, most often in the form of community acquired pneumonia. Pneumococcal conjugate vaccines (PCVs) are currently being implemented in many low-income countries. PCVs decrease vaccine-type pneumococcal carriage, a prerequisite for invasive pneumococcal disease, and thereby affects pneumococcal disease and transmission...
2016: PloS One
https://www.readbyqxmd.com/read/27821148/understanding-pneumococcal-serotype-1-biology-through-population-genomic-analysis
#11
Chrispin Chaguza, Jennifer E Cornick, Simon R Harris, Cheryl P Andam, Laura Bricio-Moreno, Marie Yang, Feyruz Yalcin, Sani Ousmane, Shanil Govindpersad, Madikay Senghore, Chinelo Ebruke, Mignon Du Plessis, Anmol M Kiran, Gerd Pluschke, Betuel Sigauque, Lesley McGee, Keith P Klugman, Paul Turner, Jukka Corander, Julian Parkhill, Jean-Marc Collard, Martin Antonio, Anne von Gottberg, Robert S Heyderman, Neil French, Aras Kadioglu, William P Hanage, Dean B Everett, Stephen D Bentley
BACKGROUND: Pneumococcus kills over one million children annually and over 90 % of these deaths occur in low-income countries especially in Sub-Saharan Africa (SSA) where HIV exacerbates the disease burden. In SSA, serotype 1 pneumococci particularly the endemic ST217 clone, causes majority of the pneumococcal disease burden. To understand the evolution of the virulent ST217 clone, we analysed ST217 whole genomes from isolates sampled from African and Asian countries. METHODS: We analysed 226 whole genome sequences from the ST217 lineage sampled from 9 African and 4 Asian countries...
November 8, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27798013/safety-and-immunogenicity-of-a-new-13-valent-pneumococcal-conjugate-vaccine-versus-a-licensed-7-valent-pneumococcal-conjugate-vaccine-a-study-protocol-of-a-randomised-non-inferiority-trial-in-china
#12
Jing Jing Chen, Lin Yuan, Zhen Huang, Nian Min Shi, Yu Liang Zhao, Sheng Li Xia, Guo Hua Li, Rong Cheng Li, Yan Ping Li, Shu Yuan Yang, Jie Lai Xia
INTRODUCTION: The invasive pneumococcal diseases (IPDs) caused by Streptococcus pneumoniae pose an enormous threat to children under 5 years of age. However, routine use of pneumococcal conjugate vaccines could aid in reducing the incidence of IPDs. The purpose of this clinical trial is to assess the non-inferiority of the investigational 13-valent pneumococcal conjugate vaccine (PCV13) to the currently licensed 7-valent pneumococcal conjugate vaccine (PCV7). METHODS AND ANALYSIS: 1040 infants will receive a three-dose series of either PCV13 or PCV7 at ages 3, 4 and 5 months, respectively, and a booster dose at 12-15 months...
October 19, 2016: BMJ Open
https://www.readbyqxmd.com/read/27790208/serotype-3-remains-the-leading-cause-of-invasive-pneumococcal-disease-in-adults-in-portugal-2012-2014-despite-continued-reductions-in-other-13-valent-conjugate-vaccine-serotypes
#13
Andreia N Horácio, Catarina Silva-Costa, Joana P Lopes, Mário Ramirez, José Melo-Cristino
Since 2010 the 13-valent pneumococcal conjugate vaccine (PCV13) replaced the 7-valent vaccine (PCV7) as the leading pneumococcal vaccine used in children through the private sector. Although, neither of the PCVs were used significantly in adults, changes in adult invasive pneumococcal disease (IPD) were expected due to herd protection. We characterized n = 1163 isolates recovered from IPD in adults in 2012-2014 with the goal of documenting possible changes in serotype prevalence and antimicrobial resistance...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27755593/correction-capture-recapture-estimators-in-epidemiology-with-applications-to-pertussis-and-pneumococcal-invasive-disease-surveillance
#14
Toon Braeye, Jan Verhaegen, Annick Mignon, Wim Flipse, Denis Pierard, Kris Huygen, Carole Schirvel, Niel Hens
[This corrects the article DOI: 10.1371/journal.pone.0159832.].
2016: PloS One
https://www.readbyqxmd.com/read/27755118/community-acquired-pneumonia-in-the-post-13-valent-pneumococcal-conjugate-vaccine-era
#15
Erin E Shaughnessy, Erika L Stalets, Samir S Shah
PURPOSE OF REVIEW: This review covers the outpatient management of pediatric community-acquired pneumonia (CAP), discussing the changing microbiology of CAP since the introduction of the 13-valent pneumococcal conjugate vaccine in 2010, and providing an overview of national guideline recommendations for diagnostic evaluation and treatment. RECENT FINDINGS: Rates of invasive pneumococcal disease and pneumococcal antibiotic resistance have plummeted since widespread 13-valent pneumococcal conjugate vaccine immunization...
December 2016: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/27753771/cost-effectiveness-and-health-benefits-of-pediatric-23-valent-pneumococcal-polysaccharide-vaccine-7-valent-pneumococcal-conjugate-vaccine-and-forecasting-13-valent-pneumococcal-conjugate-vaccine-in-china
#16
Xiuting Mo, Ruoyan Gai Tobe, Xiaoyan Liu, Rintaro Mori
BACKGROUND: Each year in China, approximately 700,000 children under 5 years old are diagnosed with pneumonia, and 30,000 die of the disease. Although 7-valent pneumococcal conjugate vaccine (PCV-7) and 23-valent pneumococcal polysaccharide vaccine (PPV-23) are available in China, the costs are borne by the consumer, resulting in low coverage for PCV-7. We aimed to conduct a simulation study to assess the cost-effectiveness and health benefits of PCV-7, 13-valent pneumococcal conjugate vaccine (PCV-13) and PPV-23 to prevent childhood pneumonia and other vaccine-preventive diseases in China...
November 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27749111/invasive-pneumococcal-disease-among-hiv-infected-and-hiv-uninfected-adults-in-a-large-integrated-healthcare-system
#17
Julia L Marcus, Roger Baxter, Wendy A Leyden, Dharushana Muthulingam, Arnold Yee, Michael A Horberg, Daniel B Klein, William J Towner, Chun R Chao, Charles P Quesenberry, Michael J Silverberg
It is unclear whether HIV-infected individuals remain at higher risk of invasive pneumococcal disease (IPD) compared with HIV-uninfected individuals. We conducted a cohort study of HIV-infected and demographically matched HIV-uninfected adults within Kaiser Permanente Northern California during the period 1996-2011. We used Poisson models to obtain rate ratios (RRs) for incident IPD associated with HIV infection and other risk factors. Among 13,079 HIV-infected and 137,643 HIV-uninfected adults, the IPD rate per 100,000 person-years was 160 (n = 109 events) for HIV-infected and 8 (n = 75 events) for HIV-uninfected subjects, with an adjusted RR of 13...
October 2016: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/27732665/single-cell-bottlenecks-in-the-pathogenesis-of-streptococcus-pneumoniae
#18
Masamitsu Kono, M Ammar Zafar, Marisol Zuniga, Aoife M Roche, Shigeto Hamaguchi, Jeffrey N Weiser
Herein, we studied a virulent isolate of the leading bacterial pathogen Streptococcus pneumoniae in an infant mouse model of colonization, disease and transmission, both with and without influenza A (IAV) co-infection. To identify vulnerable points in the multiple steps involved in pneumococcal pathogenesis, this model was utilized for a comprehensive analysis of population bottlenecks. Our findings reveal that in the setting of IAV co-infection the organism must pass through single cell bottlenecks during bloodstream invasion from the nasopharynx within the host and in transmission between hosts...
October 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27730119/the-epidemiology-of-invasive-pneumococcal-disease-in-older-adults-from-2007-to-2014-in-ontario-canada-a-population-based-study
#19
Shalini Desai, Michelle E Policarpio, Kenney Wong, Jonathan Gubbay, Jill Fediurek, Shelley Deeks
BACKGROUND: In Ontario, pneumococcal conjugate vaccines (PCVs) have been sequentially introduced into the publicly funded childhood vaccination program since 2005. A 23-valent polysaccharide pneumococcal vaccine (PPV23) has been routinely recommended for adults aged 65 years and older since 1996. To determine the effect of herd immunity, we examined the epidemiology of invasive pneumococcal disease in adults aged 65 years and older. METHODS: Invasive pneumococcal disease is a provincially reportable disease...
July 2016: CMAJ Open
https://www.readbyqxmd.com/read/27709102/macrolide-resistance-in-streptococcus-pneumoniae
#20
Max R Schroeder, David S Stephens
Streptococcus pneumoniae is a common commensal and an opportunistic pathogen. Suspected pneumococcal upper respiratory infections and pneumonia are often treated with macrolide antibiotics. Macrolides are bacteriostatic antibiotics and inhibit protein synthesis by binding to the 50S ribosomal subunit. The widespread use of macrolides is associated with increased macrolide resistance in S. pneumoniae, and the treatment of pneumococcal infections with macrolides may be associated with clinical failures. In S...
2016: Frontiers in Cellular and Infection Microbiology
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