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Group a streptococcal

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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
#1
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/29159765/characteristic-comparison-of-meningitis-and-non-meningitis-of-streptococcus-suis-in-an-experimentally-infected-porcine-model
#2
Yingying Sun, Hongtao Liu, Rui Du, Shuguang Li, Guanggang Qu, Rining Zhu, Shuang Zhao, Jingmin Gu, Changjiang Sun, Xin Feng, Wenyu Han, Liancheng Lei
This study tested the differences of meningitis and non-meningitis of Streptococcus suis (SS). In this study, an infected pig model of streptococcal meningitis was established. Compared with the non-meningitis Streptococcus suis group (JZLQ001 group), the meningitis Streptococcus suis group (JZLQ022) exhibited neurological symptoms, such as ataxia and foaming at the mouth, and the brain showed a large area of congestion at 5 days post-infection (p.i.). Moreover, bacterial counts, white blood cells (WBCs), neutrophils, and blood glucose in the blood reached a peak and were significantly higher than those of the JZLQ001 group at 3 days p...
November 20, 2017: Inflammation
https://www.readbyqxmd.com/read/29146635/antibiotic-use-and-bacterial-complications-following-upper-respiratory-tract-infections-a-population-based-study
#3
Thomas Cars, Irene Eriksson, Anna Granath, Björn Wettermark, Jenny Hellman, Christer Norman, Anders Ternhag
OBJECTIVES: To investigate if use of antibiotics was associated with bacterial complications following upper respiratory tract infections (URTIs). DESIGN: Ecological time-trend analysis and a prospective cohort study. SETTING: Primary, outpatient specialist and inpatient care in Stockholm County, Sweden. All analyses were based on administrative healthcare data on consultations, diagnoses and dispensed antibiotics from January 2006 to January 2016...
November 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/29146149/recent-patterns-in-antibiotic-use-for-children-with-group-a-streptococcal-infections
#4
Yusuke Okubo, Nobuaki Michihata, Naho Morisaki, Noriko Kinoshita, Isao Miyairi, Kevin Y Urayama, Hideo Yasunaga
BACKGROUND: Antibiotics are the most frequently prescribed medications for children, but inappropriate prescribing of antibiotics is prevalent. This study investigated recent trends in antibiotic use and factors associated with appropriate antibiotic selection among children with group A streptococcal infections. METHODS: We obtained records of outpatients aged under 18 years with diagnoses of group A streptococcal infections, using the Japan Medical Data Center database...
November 13, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29135828/improved-diagnostic-performance-of-an-immunofluorescence-based-rapid-antigen-detection-test-for-group-a-streptococci-in-children-with-pharyngitis
#5
Laurence Lacroix, Abdessalam Cherkaoui, Diane Schaller, Sergio Manzano, Annick Galetto-Lacour, Ulrich Pfeifer, René Tabin, Alain Gervaix
BACKGROUND: Accurate diagnosis and appropriate treatment of Group A streptococcal (GAS) pharyngitis are important to prevent complications. Most available rapid antigen detection tests (RADTs) have shown excellent specificity but often lack sensitivity. Our objective was to compare the diagnostic performances of a new fluorescence-based immunoassay and a classic immunochromatographic RADT using standard throat culture or PCR as references. MATERIALS/METHODS: Prospective observational study in 2 pediatric emergency departments in children aged 3 to 15 years old presenting with pharyngitis and a McIsaac score ≥ 2...
November 11, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29129451/cost-effectiveness-of-maternal-gbs-immunization-in-low-income-sub-saharan-africa
#6
Louise B Russell, Sun-Young Kim, Ben Cosgriff, Sri Ram Pentakota, Stephanie J Schrag, Ajoke Sobanjo-Ter Meulen, Jennifer R Verani, Anushua Sinha
BACKGROUND: A maternal group B streptococcal (GBS) vaccine could prevent neonatal sepsis and meningitis. Its cost-effectiveness in low-income sub-Saharan Africa, a high burden region, is unknown. METHODS: We used a decision tree model, with Markov nodes to project infants' lifetimes, to compare maternal immunization delivered through routine antenatal care with no immunization. 37 countries were clustered on the basis of economic and health resources and past public health performance...
November 9, 2017: Vaccine
https://www.readbyqxmd.com/read/29117332/estimates-of-the-burden-of-group-b-streptococcal-disease-worldwide-for-pregnant-women-stillbirths-and-children
#7
Anna C Seale, Fiorella Bianchi-Jassir, Neal J Russell, Maya Kohli-Lynch, Cally J Tann, Jenny Hall, Lola Madrid, Hannah Blencowe, Simon Cousens, Carol J Baker, Linda Bartlett, Clare Cutland, Michael G Gravett, Paul T Heath, Margaret Ip, Kirsty Le Doare, Shabir A Madhi, Craig E Rubens, Samir K Saha, Stephanie J Schrag, Ajoke Sobanjo-Ter Meulen, Johan Vekemans, Joy E Lawn
Background: We aimed to provide the first comprehensive estimates of the burden of group B Streptococcus (GBS), including invasive disease in pregnant and postpartum women, fetal infection/stillbirth, and infants. Intrapartum antibiotic prophylaxis is the current mainstay of prevention, reducing early-onset infant disease in high-income contexts. Maternal GBS vaccines are in development. Methods: For 2015 live births, we used a compartmental model to estimate (1) exposure to maternal GBS colonization, (2) cases of infant invasive GBS disease, (3) deaths, and (4) disabilities...
November 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29117331/neurodevelopmental-impairment-in-children-after-group-b-streptococcal-disease-worldwide-systematic-review-and-meta-analyses
#8
Maya Kohli-Lynch, Neal J Russell, Anna C Seale, Ziyaad Dangor, Cally J Tann, Carol J Baker, Linda Bartlett, Clare Cutland, Michael G Gravett, Paul T Heath, Margaret Ip, Kirsty Le Doare, Shabir A Madhi, Craig E Rubens, Samir K Saha, Stephanie Schrag, Ajoke Sobanjo-Ter Meulen, Johan Vekemans, Catherine O'Sullivan, Firdose Nakwa, Hechmi Ben Hamouda, Habib Soua, Kyriaki Giorgakoudi, Shamez Ladhani, Theresa Lamagni, Hilary Rattue, Caroline Trotter, Joy E Lawn
Background: Survivors of infant group B streptococcal (GBS) disease are at risk of neurodevelopmental impairment (NDI), a burden not previously systematically quantified. This is the 10th of 11 articles estimating the burden of GBS disease. Here we aimed to estimate NDI in survivors of infant GBS disease. Methods: We conducted systematic literature reviews (PubMed/Medline, Embase, Latin American and Caribbean Health Sciences Literature [LILACS], World Health Organization Library Information System [WHOLIS], and Scopus) and sought unpublished data on the risk of NDI after invasive GBS disease in infants <90 days of age...
November 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29117330/neonatal-encephalopathy-with-group-b-streptococcal-disease-worldwide-systematic-review-investigator-group-datasets-and-meta-analysis
#9
Cally J Tann, Kathryn A Martinello, Samantha Sadoo, Joy E Lawn, Anna C Seale, Maira Vega-Poblete, Neal J Russell, Carol J Baker, Linda Bartlett, Clare Cutland, Michael G Gravett, Margaret Ip, Kirsty Le Doare, Shabir A Madhi, Craig E Rubens, Samir K Saha, Stephanie Schrag, Ajoke Sobanjo-Ter Meulen, Johan Vekemans, Paul T Heath
Background: Neonatal encephalopathy (NE) is a leading cause of child mortality and longer-term impairment. Infection can sensitize the newborn brain to injury; however, the role of group B streptococcal (GBS) disease has not been reviewed. This paper is the ninth in an 11-article series estimating the burden of GBS disease; here we aim to assess the proportion of GBS in NE cases. Methods: We conducted systematic literature reviews (PubMed/Medline, Embase, Latin American and Caribbean Health Sciences Literature [LILACS], World Health Organization Library Information System [WHOLIS], and Scopus) and sought unpublished data from investigator groups reporting GBS-associated NE...
November 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29117326/infant-group-b-streptococcal-disease-incidence-and-serotypes-worldwide-systematic-review-and-meta-analyses
#10
Lola Madrid, Anna C Seale, Maya Kohli-Lynch, Karen M Edmond, Joy E Lawn, Paul T Heath, Shabir A Madhi, Carol J Baker, Linda Bartlett, Clare Cutland, Michael G Gravett, Margaret Ip, Kirsty Le Doare, Craig E Rubens, Samir K Saha, Ajoke Sobanjo-Ter Meulen, Johan Vekemans, Stephanie Schrag
Background: Group B Streptococcus (GBS) remains a leading cause of neonatal sepsis in high-income contexts, despite declines due to intrapartum antibiotic prophylaxis (IAP). Recent evidence suggests higher incidence in Africa, where IAP is rare. We investigated the global incidence of infant invasive GBS disease and the associated serotypes, updating previous estimates. Methods: We conducted systematic literature reviews (PubMed/Medline, Embase, Latin American and Caribbean Health Sciences Literature [LILACS], World Health Organization Library Information System [WHOLIS], and Scopus) and sought unpublished data regarding invasive GBS disease in infants aged 0-89 days...
November 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29117325/risk-of-early-onset-neonatal-group-b-streptococcal-disease-with-maternal-colonization-worldwide-systematic-review-and-meta-analyses
#11
Neal J Russell, Anna C Seale, Catherine O'Sullivan, Kirsty Le Doare, Paul T Heath, Joy E Lawn, Linda Bartlett, Clare Cutland, Michael Gravett, Margaret Ip, Shabir A Madhi, Craig E Rubens, Samir K Saha, Stephanie Schrag, Ajoke Sobanjo-Ter Meulen, Johan Vekemans, Carol J Baker
Background: Early-onset group B streptococcal disease (EOGBS) occurs in neonates (days 0-6) born to pregnant women who are rectovaginally colonized with group B Streptococcus (GBS), but the risk of EOGBS from vertical transmission has not been systematically reviewed. This article, the seventh in a series on the burden of GBS disease, aims to estimate this risk and how it varies with coverage of intrapartum antibiotic prophylaxis (IAP), used to reduce the incidence of EOGBS. Methods: We conducted systematic reviews (Pubmed/Medline, Embase, Latin American and Caribbean Health Sciences Literature (LILACS), World Health Organization Library Information System [WHOLIS], and Scopus) and sought unpublished data from investigator groups on maternal GBS colonization and neonatal outcomes...
November 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29117324/intrapartum-antibiotic-chemoprophylaxis-policies-for-the-prevention-of-group-b-streptococcal-disease-worldwide-systematic-review
#12
Kirsty Le Doare, Megan O'Driscoll, Kim Turner, Farah Seedat, Neal J Russell, Anna C Seale, Paul T Heath, Joy E Lawn, Carol J Baker, Linda Bartlett, Clare Cutland, Michael G Gravett, Margaret Ip, Shabir A Madhi, Craig E Rubens, Samir K Saha, Stephanie Schrag, Ajoke Sobanjo-Ter Meulen, Johan Vekemans, Beate Kampmann
Background: Intrapartum antibiotic chemoprophylaxis (IAP) prevents most early-onset group B streptococcal (GBS) disease. However, there is no description of how IAP is used around the world. This article is the sixth in a series estimating the burden of GBS disease. Here we aimed to review GBS screening policies and IAP implementation worldwide. Methods: We identified data through (1) systematic literature reviews (PubMed/Medline, Embase, Literature in the Health Sciences in Latin America and the Caribbean [LILACS], World Health Organization library database [WHOLIS], and Scopus) and unpublished data from professional societies and (2) an online survey and searches of policies from medical societies and professionals...
November 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29117323/group-b-streptococcal-disease-worldwide-for-pregnant-women-stillbirths-and-children-why-what-and-how-to-undertake-estimates
#13
Joy E Lawn, Fiorella Bianchi-Jassir, Neal J Russell, Maya Kohli-Lynch, Cally J Tann, Jennifer Hall, Lola Madrid, Carol J Baker, Linda Bartlett, Clare Cutland, Michael G Gravett, Paul T Heath, Margaret Ip, Kirsty Le Doare, Shabir A Madhi, Craig E Rubens, Samir K Saha, Stephanie Schrag, Ajoke Sobanjo-Ter Meulen, Johan Vekemans, Anna C Seale
Improving maternal, newborn, and child health is central to Sustainable Development Goal targets for 2030, requiring acceleration especially to prevent 5.6 million deaths around the time of birth. Infections contribute to this burden, but etiological data are limited. Group B Streptococcus (GBS) is an important perinatal pathogen, although previously focus has been primarily on liveborn children, especially early-onset disease. In this first of an 11-article supplement, we discuss the following: (1) Why estimate the worldwide burden of GBS disease? (2) What outcomes of GBS in pregnancy should be included? (3) What data and epidemiological parameters are required? (4) What methods and models can be used to transparently estimate this burden of GBS? (5) What are the challenges with available data? and (6) How can estimates address data gaps to better inform GBS interventions including maternal immunization? We review all available GBS data worldwide, including maternal GBS colonization, risk of neonatal disease (with/without intrapartum antibiotic prophylaxis), maternal GBS disease, neonatal/infant GBS disease, and subsequent impairment, plus GBS-associated stillbirth, preterm birth, and neonatal encephalopathy...
November 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29117322/stillbirth-with-group-b-streptococcus-disease-worldwide-systematic-review-and-meta-analyses
#14
Anna C Seale, Hannah Blencowe, Fiorella Bianchi-Jassir, Nicholas Embleton, Quique Bassat, Jaume Ordi, Clara Menéndez, Clare Cutland, Carmen Briner, James A Berkley, Joy E Lawn, Carol J Baker, Linda Bartlett, Michael G Gravett, Paul T Heath, Margaret Ip, Kirsty Le Doare, Craig E Rubens, Samir K Saha, Stephanie Schrag, Ajoke Sobanjo-Ter Meulen, Johan Vekemans, Shabir A Madhi
Background: There are an estimated 2.6 million stillbirths each year, many of which are due to infections, especially in low- and middle-income contexts. This paper, the eighth in a series on the burden of group B streptococcal (GBS) disease, aims to estimate the percentage of stillbirths associated with GBS disease. Methods: We conducted systematic literature reviews (PubMed/Medline, Embase, Literatura Latino-Americana e do Caribe em Ciências da Saúde, World Health Organization Library Information System, and Scopus) and sought unpublished data from investigator groups...
November 6, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29112476/cross-sectional-evaluation-of-plasma-vitamin-d-levels-in-a-large-cohort-of-italian-patients-with-pediatric-autoimmune-neuropsychiatric-disorders-associated-with-streptococcal-infections
#15
Stefano Stagi, Gemma Lepri, Donato Rigante, Marco Matucci Cerinic, Fernanda Falcini
BACKGROUND: Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS) are immune-mediated diseases characterized by obsessive-compulsive symptoms and/or tics triggered by group A Streptococcus infections. Despite the well-known action of 25-hydroxyvitamin D [25(OH)D] on different conditions driven by systemic inflammation, there are no data about the 25(OH)D status in patients with PANDAS. AIMS: To evaluate plasma 25(OH)D levels in a large cohort of children and adolescents with PANDAS and comparing the results with healthy controls...
November 7, 2017: Journal of Child and Adolescent Psychopharmacology
https://www.readbyqxmd.com/read/29109702/genomic-comparison-among-lethal-invasive-strains-of-streptococcus-pyogenes-serotype-m1
#16
Gabriel R Fernandes, Aulus E A D Barbosa, Renan N Almeida, Fabíola F Dos S Castro, Marina de C P da Ponte, Celio Faria-Junior, Fernanda M P Müller, Antônio A B Viana, Dario Grattapaglia, Octavio L Franco, Sérgio A Alencar, Simoni C Dias
Streptococcus pyogenes, also known as group A Streptococcus (GAS), is a human pathogen that causes diverse human diseases including streptococcal toxic shock syndrome (STSS). A GAS outbreak occurred in Brasilia, Brazil, during the second half of the year 2011, causing 26 deaths. Whole genome sequencing was performed using Illumina platform. The sequences were assembled and genes were predicted for comparative analysis with emm type 1 strains: MGAS5005 and M1 GAS. Genomics comparison revealed one of the invasive strains that differ from others isolates and from emm 1 reference genomes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29107650/molecular-characterization-and-antibiotic-resistance-of-streptococcus-dysgalactiae-subspecies-equisimilis-isolated-from-patients-with-streptococcal-toxic-shock-syndrome
#17
T Ikebe, R Okuno, M Sasaki, Y Kanda, H Otsuka, R Kawahara, H Ohya, M Suzuki, K Uchida, H Nihonmatsu, M Ohnishi
Streptococcal toxic shock syndrome (STSS) is a severe invasive infection characterized by the sudden onset of shock, multiorgan failure, and high mortality. Although STSS is mainly caused by Streptococcus pyogenes, group G streptococcus identified as S. dysgalactiae subsp. equisimilis (SDSE) causing STSS has also been reported; however, no study has analyzed >100 isolates of SDSE causing STSS. Therefore, we characterized the emm genotype of 173 SDSE isolates obtained from STSS patients in Japan during 2014-2016 and performed antimicrobial susceptibility testing using the broth microdilution method and emm gene typing...
October 26, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29107417/osteoarticular-and-skin-and-soft-tissue-infections-caused-by-streptococcus-agalactiae-in-elderly-patients-are-frequently-associated-with-bacteremia
#18
Corinne Ruppen, Julia Notter, Carol Strahm, Beat Sonderegger, Parham Sendi
Older persons (≥65 years) are at risk for invasive group B streptococcal (GBS) infections. The most frequent clinical syndromes in 174 infection episodes were osteoarticular (40%) and skin and soft-tissue infections (30%). In 36% of episodes, a companion microorganism was isolated, and in 45%, blood culture results were positive. Antibiotics were streamlined after species identification in 29% of monomicrobial infections. These findings have clinical and therapeutic implications for GBS infections in the elderly...
September 19, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29099353/streptococcus-bovimastitidis-sp-nov-isolated-from-a-dairy-cow-with-mastitis
#19
Stefan P W de Vries, Nazreen F Hadjirin, Elizabeth M Lay, Ruth N Zadoks, Sharon J Peacock, Julian Parkhill, Andrew J Grant, Scott McDougall, Mark A Holmes
Here we describe a new species of the genus Streptococcus that was isolated from a dairy cow with mastitis in New Zealand. Strain NZ1587(T) was Gram-positive, coccus-shaped and arranged as chains, catalase and coagulase negative, γ-haemolytic and negative for Lancefield carbohydrates (A-D, F and G). The 16S rRNA sequence did not match sequences in the NCBI 16S rRNA or GreenGenes databases. Taxonomic classification of strain NZ1587(T) was investigated using 16S rRNA and core genome phylogeny, genome-wide average nucleotide identity (ANI) and predicted DNA-DNA hybridisation (DDH) analyses...
November 3, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29097247/emerging-group-c-and-group-g-streptococcal-endocarditis-a-canadian-perspective
#20
Sylvain A Lother, Davinder S Jassal, Philippe Lagacé-Wiens, Yoav Keynan
OBJECTIVES: The aim of this study was to determine the incidence of infective endocarditis (IE) in patients with bacteremia caused by group C and group G streptococci (GCGS) and to characterize the burden of disease, clinical characteristics, and outcomes through a case series of patients with GCGS IE. METHODS: Individuals with blood cultures growing GCGS in Manitoba, Canada, between January 2012 and December 2015 were included. Clinical and echocardiographic parameters were collected retrospectively...
October 31, 2017: International Journal of Infectious Diseases: IJID
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