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Streptococcus group B

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https://www.readbyqxmd.com/read/29232664/vaccination-practices-in-pediatric-dialysis-patients-across-europe-a-european-pediatric-dialysis-working-group-and-european-society-for-pediatric-nephrology-dialysis-working-group-study
#1
Sevcan A Bakkaloğlu, Yesim Özdemir Atikel, Fabio Paglialonga, Constantinos J Stefanidis, Varvara Askiti, Enrico Vidal, Gema Ariceta, Engin Melek, Enrico Verrina, Nikoleta Printza, Karel Vondrak, Aleksandra Zurowska, Ilona Zagozdzon, Mesiha Ekim, Elif Nursel Özmert, Stephanie Dufek, Augustina Jankauskiene, Claus Peter Schmitt, Eszter Lévai, Johan Vande Walle, Nur Canpolat, Tuula Holtta, Michel Fischbach, Guenter Klaus, Christoph Aufricht, Rukshana Shroff, Alberto Edefonti
BACKGROUND: Data on the immunization practices in pediatric chronic kidney disease (CKD) patients are scarce. The purpose of this study was to evaluate current vaccination practices for children on dialysis across European pediatric nephrology centers. METHODS: A total of 18 tertiary pediatric nephrology centers from 12 European countries were included in the study. The data on universal national immunization programs and immunization practices for children with chronic disease or risk were recorded from European Center for Disease Prevention and Control and the World Health Organization...
December 12, 2017: Nephron
https://www.readbyqxmd.com/read/29223920/streptococcus-agalactiae-bacteremia-in-non-pregnant-adult-patients-at-two-teaching-hospitals
#2
Emanuel J Saad, Diego F Baenas, Cecilia S Boisseau, Mercedes J García, Silvana A Núñez, Pablo E Sanchez, Domingo C Balderramo, Daniela Hernández, Juan P Caeiro
Streptococcus agalactiae or group B streptococcus (GBS) is a frequent pathogen in immunocompromised adults. The aim of this study was to determine the relative frequency, clinical presentation, antimicrobial susceptibility profile, and risk factors associated with GBS bacteremia in non-pregnant adult patients. We conducted a retrospective analysis of blood cultures performed in two hospitals between the years 2009-2013. From 1110 bacteremia episodes, 13 were caused by GBS, all of which were susceptible to ampicillin...
December 6, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/29211057/neonatal-neutrophils-stimulated-by-group-b-streptococcus-induce-a-proinflammatory-t-helper-cell-bias
#3
Jianguo Lin, Seema Haridas, Stephen J Barenkamp, Larissa Chioquetta Lorenset, Ashley Sang Eun Lee, Benjamin T Schroeder, Guangyong Peng, Joyce M Koenig
BackgroundGroup B Streptococcus (GBS) infection causes inflammatory comorbidities in newborns. While the mechanisms remain unclear, evidence suggests that impaired innate-adaptive immune interactions may be contributory. We hypothesized that GBS-stimulated neonatal neutrophils provide a milieu that may drive proinflammatory T-helper (Th) cell programming.MethodsNeutrophils were stimulated with Type III GBS (COH1); supernatants or intact neutrophils were cocultured with CD4+ T cells or regulatory T cells (Tregs)...
December 6, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29209311/codevelopment-of-microbiota-and-innate-immunity-and-the-risk-for-group-b-streptococcal-disease
#4
REVIEW
Julia Kolter, Philipp Henneke
The pathogenesis of neonatal late-onset sepsis (LOD), which manifests between the third day and the third month of life, remains poorly understood. Group B Streptococcus (GBS) is the most important cause of LOD in infants without underlying diseases or prematurity and the third most frequent cause of meningitis in the Western world. On the other hand, GBS is a common intestinal colonizer in infants. Accordingly, despite its adaption to the human lower gastrointestinal tract, GBS has retained its potential virulence and its transition from a commensal to a dangerous pathogen is unpredictable in the individual...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29198102/antimicrobial-and-antibiofilm-activity-of-human-milk-oligosaccharides-against-streptococcus-agalactiae-staphylococcus-aureus-and-acinetobacter-baumannii
#5
Dorothy L Ackerman, Kelly M Craft, Ryan S Doster, Jörn-Hendrik Weitkamp, David M Aronoff, Jennifer A Gaddy, Steven D Townsend
In a previous study, we reported that human milk oligosaccharides (HMOs) isolated from five donor milk samples possessed antimicrobial and antibiofilm activity against Streptococcus agalactiae, also known as Group B Streptococcus or GBS. Herein, we present a broader evaluation of the antimicrobial and antibiofilm activity by screening HMOs from 14 new donors against three strains of GBS and two of the ESKAPE pathogens of particular interest to child health, Staphylococcus aureus and Acinetobacter baumannii...
December 8, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29188068/32-week-premature-rupture-of-membranes-caused-by-oropharyngeal-microbiota
#6
Alberto Hidalgo-Chicharro, Raquel Abad-Torreblanca, José María Navarro-Marí, José Gutiérrez-Fernández
Introduction. Preterm premature rupture of membranes (PPROM) usually has a multifactorial etiology that is often unknown, although the most frequently reported cause is infection by group B Streptococcus. Therefore, the etiology of PPROM, although probably infectious, remains unknown in most cases. This case describes a PPROM caused by infection from oropharyngeal microbiota. Case presentation. We report the case of a 26-yr-old pregnant woman. The gestational age was 32 weeks+5 days. Examinations in the emergency department revealed the release of clear amniotic fluid and a closed multiparous cervix with a length of 22 mm...
October 2017: JMM Case Reports
https://www.readbyqxmd.com/read/29184151/association-between-antibodies-against-group-b-streptococcus-surface-proteins-and-recto-vaginal-colonisation-during-pregnancy
#7
Sonwabile Dzanibe, Gaurav Kwatra, Peter V Adrian, Sheila Z Kimaro-Mlacha, Clare L Cutland, Shabir A Madhi
Group B Streptococcus (GBS) recto-vaginal colonisation in pregnant women is the major risk factor for early-onset invasive GBS disease in their newborns. We aimed to determine the association between serum antibody levels against 11 GBS surface proteins and recto-vaginal acquisition of GBS colonisation during pregnancy. Sera collected from pregnant women at 20-25 weeks and ≥37 weeks of gestation age were measured for IgG titres against GBS surface proteins using  a multiplex immunoassay. Women were evaluated for recto-vaginal colonisation every 4-5 weeks...
November 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29184093/intrapartum-antibiotics-for-gbs-prophylaxis-alter-colonization-patterns-in-the-early-infant-gut-microbiome-of-low-risk-infants
#8
Jennifer C Stearns, Julia Simioni, Elizabeth Gunn, Helen McDonald, Alison C Holloway, Lehana Thabane, Andrea Mousseau, Jonathan D Schertzer, Elyanne M Ratcliffe, Laura Rossi, Michael G Surette, Katherine M Morrison, Eileen K Hutton
Early life microbial colonization and succession is critically important to healthy development with impacts on metabolic and immunologic processes throughout life. A longitudinal prospective cohort was recruited from midwifery practices to include infants born at full term gestation to women with uncomplicated pregnancies. Here we compare bacterial community succession in infants born vaginally, with no exposure to antibiotics (n = 53), with infants who were exposed to intrapartum antibiotic prophylaxis (IAP) for Group B Streptococcus (GBS; n = 14), and infants born by C-section (n = 7)...
November 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29181956/infectious-diseases-in-poland-in-2015
#9
Małgorzata Sadkowska-Todys, Andrzej Zieliński, Mirosław P. Czarkowski
PURPOSE OF THE STUDY: This is the next annual analysis of the situation of infectious and parasitic diseases in Poland in 2015 within the framework of the Epidemiological Chronicle of Przegląd Epidemiologiczny - Epidemiological Review. Its purpose is to identify potential threats to the health of populations from infectious diseases occurring in Poland with reference to other parts of the globe. MATERIAL AND METHODS: This paper is an introduction to more detailed studies of the epidemiological situation of selected infectious diseases and summarizes the results of the surveillance of infectious diseases in Poland in 2015...
2017: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/29180508/incidence-and-serotype-characterisation-of-streptococcus-agalactiae-in-a-portuguese-hospital
#10
Ana Mafalda Pinto, Tamegão Aires Pereira, Valquíria Alves, António Araújo, Olga Maria Lage
AIMS: Streptococcus agalactiae, commonly known as group B Streptococcus (GBS), has been recognised as a worldwide causative pathogenic agent of neonatal sepsis, meningitis and pneumonia. To better understand the behaviour of S. agalactiae in pregnant women from a hospital from the North of Portugal, retrospective analyses were performed to describe epidemiological, clinical and microbiological characteristics of the isolates obtained. METHODS: Based on laboratorial records and the hospital's patient files, a 6-year retrospective study was performed to analyse S...
November 27, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29175856/effect-of-a-population-level-performance-dashboard-intervention-on-maternal-newborn-outcomes-an-interrupted-time-series-study
#11
Deborah Weiss, Sandra I Dunn, Ann E Sprague, Deshayne B Fell, Jeremy M Grimshaw, Elizabeth Darling, Ian D Graham, JoAnn Harrold, Graeme N Smith, Wendy E Peterson, Jessica Reszel, Andrea Lanes, Mark C Walker, Monica Taljaard
OBJECTIVES: To assess the effect of the Maternal Newborn Dashboard on six key clinical performance indicators in the province of Ontario, Canada. DESIGN: Interrupted time series using population-based data from the provincial birth registry covering a 3-year period before implementation of the Dashboard and 2.5 years after implementation (November 2009 through March 2015). SETTING: All hospitals in the province of Ontario providing maternal-newborn care (n=94)...
November 24, 2017: BMJ Quality & Safety
https://www.readbyqxmd.com/read/29160197/isolation-and-molecular-characterization-of-group-b-streptococcus-from-laboratory-long-evans-rats-rattus-norvegicus-with-and-without-invasive-group-b-streptococcal-disease
#12
Caroline Bodi Winn, Vasudevan Bakthavatchalu, Michael Y Esmail, Yan Feng, JoAnn Dzink-Fox, Lauren Richey, Scott E Perkins, Eric K Nordberg, James G Fox
PURPOSE: Group B Streptococcus (S. agalactiae, GBS) is a Gram-positive opportunistic pathogen that inhabits the respiratory, urogenital and gastrointestinal tracts of humans and animals. Maternal colonization of GBS is a risk factor for a spectrum of clinical diseases in humans and a principle cause of neonatal meningitis and septicaemia. METHODOLOGY: We describe polymicrobial sepsis including GBS in two gravid adult female Long-Evans rats experiencing acute mortality from a colony of long-term breeding pairs...
November 21, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29158327/early-onset-group-b-streptococcus-eogbs-infection-subsequent-to-cessation-of-screening-based-intrapartum-prophylaxis-findings-of-an-observational-study-in-west-london-uk
#13
Guduru Gopal Rao, Jane Townsend, Daniel Stevenson, Grace Nartey, Stephen Hiles, Paul Bassett, Theresa Lamagni, Richard Nicholl
OBJECTIVES: To describe the impact on early-onset group B Streptococcus (EOGBS) infection rates following reversion from screening-based to risk-based intrapartum antimicrobial prophylaxis (IAP) for prevention. SETTING: Maternity services provided by secondary healthcare organisation in North West London. PARTICIPANTS: All women who gave birth in the healthcare organisation between April 2016 and March 2017. There were no exclusions. DESIGN: Observational study comparing EOGBS rates in the postscreening period (2016-2017) with prescreening (2009-2013) and screening periods (2014-2015)...
November 19, 2017: BMJ Open
https://www.readbyqxmd.com/read/29155939/group-b-streptococcus-activates-transcriptomic-pathways-related-to-premature-birth-in-human-extraplacental-membranes-in-vitro
#14
Hae-Ryung Park, Sean M Harris, Erica Boldenow, Richard C McEachin, Maureen Sartor, Mark Chames, Rita Loch-Caruso
Streptococcus agalactiae (group B streptococcus, GBS) infection in pregnant women is the leading cause of infectious neonatal morbidity and mortality in the United States. Although inflammation during infection has been associated with preterm birth, the contribution of GBS to preterm birth is less certain. Moreover, the early mechanisms by which GBS interacts with the gestational tissue to affect adverse pregnancy outcomes are poorly understood. We hypothesized that short term GBS inoculation activates pathways related to inflammation and premature birth in human extraplacental membranes...
November 16, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29153057/sex-dependent-influence-of-developmental-toxicant-exposure-on-group-b-streptococcus-mediated-preterm-birth-in-a-murine-model
#15
Tianbing Ding, Lauren A Lambert, David M Aronoff, Kevin G Osteen, Kaylon L Bruner-Tran
Infectious agents are a significant risk factor for preterm birth (PTB); however, the simple presence of bacteria is not sufficient to induce PTB in most women. Human and animal data suggest that environmental toxicant exposures may act in concert with other risk factors to promote PTB. Supporting this "second hit" hypothesis, we previously demonstrated exposure of fetal mice (F1 animals) to the environmental endocrine disruptor 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) leads to an increased risk of spontaneous and infection-mediated PTB in adult animals...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29152844/faecal-microbiota-in-dogs-with-multicentric-lymphoma
#16
A Gavazza, G Rossi, G Lubas, M Cerquetella, Y Minamoto, J S Suchodolski
Malignant lymphoma B-cell type is the most common canine haematopoietic malignancy. Changes in intestinal microbiota have been implicated in few types of cancer in humans. The aim of this prospective and case-control study was to determine differences in faecal microbiota between healthy control dogs and dogs with multicentric lymphoma. Twelve dogs affected by multicentric, B-cell, stage III-IV lymphoma, and 21 healthy dogs were enrolled in the study. For each dog, faecal samples were analysed by Illumina sequencing of 16S rRNA genes and quantitative PCR (qPCR) for selected bacterial groups...
November 20, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/29150372/duration-of-group-a-streptococcus-pcr-positivity-following-antibiotic-treatment-of-pharyngitis
#17
Jason H Homme, Corryn S Greenwood, Lisa B Cronk, Lisa M Nyre, James R Uhl, Amy L Weaver, Robin Patel
BACKGROUND: Polymerase chain reaction (PCR) has high sensitivity and specificity for detection of group A streptococcus (GAS) in throat swabs and is routinely used for GAS pharyngitis diagnosis at our institution. Herein we defined the natural history of throat swab GAS PCR and culture positivity during and following treatment of GAS pharyngitis. METHODS: Fifty children with a PCR positive GAS throat swab were recruited for participation. Four additional throat swabs were collected over 2 weeks following the initial positive PCR result (during and following a standard course of antibiotic therapy) and tested for GAS using rapid real-time PCR and culture...
October 12, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29149199/epidemiology-and-clinical-profile-of-pathogens-responsible-for-the-hospitalization-of-children-in-sousse-area-tunisia
#18
Ines Brini, Aida Guerrero, Naila Hannachi, Jihene Bouguila, Dorothea Orth-Höller, Amira Bouhlel, Lamia Boughamoura, Benjamin Hetzer, Wegene Borena, Britta Schiela, Dorothee Von Laer, Jalel Boukadida, Heribert Stoiber
This study aimed to identify a broad spectrum of respiratory pathogens from hospitalized and not-preselected children with acute respiratory tract infections in the Farhat Hached University-hospital of Sousse, Tunisia. Between September 2013 and December 2014, samples from 372 children aged between 1 month and 5 years were collected, and tested using multiplex real-time RT-PCR by a commercial assay for 21 respiratory pathogens. In addition, samples were screened for the presence of Streptococcus pneumoniae 16S rDNA using real-time PCR...
2017: PloS One
https://www.readbyqxmd.com/read/29148967/group-b-streptococcus-infections-caused-by-improper-sourcing-and-handling-of-fish-for-raw-consumption-singapore-2015-2016
#19
Man L Chau, Swaine L Chen, Min Yap, Sri H P Hartantyo, Paul K T Chiew, Charlene J Fernandez, Wai K Wong, Rockey K Fong, Wei L Tan, Brian Z Y Tan, Youming Ng, Kyaw T Aung, Kurosh S Mehershahi, Christopher Goh, Joanne S L Kang, Timothy Barkham, Adeline O K Leong, Ramona A Gutiérrez, Lee C Ng
We assessed microbial safety and quality of raw fish sold in Singapore during 2015-2016 to complement epidemiologic findings for an outbreak of infection with group B Streptococcus serotype III sequence type (ST) 283 associated with raw fish consumption. Fish-associated group B Streptococcus ST283 strains included strains nearly identical (0-2 single-nucleotide polymorphisms) with the human outbreak strain, as well as strains in another distinct ST283 clade (57-71 single-nucleotide polymorphisms). Our investigations highlight the risk for contamination of freshwater fish (which are handled and distributed separately from saltwater fish sold as sashimi) and the need for improved hygienic handling of all fish for raw consumption...
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29148379/characterization-of-streptococcus-pyogenes-from-animal-clinical-specimens-spain
#20
Ana Isabel Vela, Pilar Villalón, Juan Antonio Sáez-Nieto, Gema Chacón, Lucas Domínguez, José Francisco Fernández-Garayzábal
Streptococcus pyogenes appears to be almost exclusively restricted to humans, with few reports on isolation from animals. We provide a detailed characterization (emm typing, pulsed-field gel electrophoresis [PFGE], and multilocus sequence typing [MLST]) of 15 S. pyogenes isolates from animals associated with different clinical backgrounds. We also investigated erythromycin resistance mechanisms and phenotypes and virulence genes. We observed 2 emm types: emm12 (11 isolates) and emm77 (4 isolates). Similarly, we observed 2 genetic linages, sequence type (ST) 26 and ST63...
December 2017: Emerging Infectious Diseases
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