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Mauritz MD, von Both U, Dohna-Schwake C, Gille C, Hasan C, Huebner J, Hufnagel M, Knuf M, Liese JG, Renk H, Rudolph H, Schulze-Sturm U, Simon A, Stehling F, Tenenbaum T, Zernikow B. Clinical recommendations for the inpatient management of lower respiratory tract infections in children and adolescents with severe neurological impairment in Germany. Eur J Pediatr 2024; 183:987-999. [PMID: 38172444 PMCID: PMC10951000 DOI: 10.1007/s00431-023-05401-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/06/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024]
Abstract
Children and adolescents with severe neurological impairment (SNI) require specialized care due to their complex medical needs. In particular, these patients are often affected by severe and recurrent lower respiratory tract infections (LRTIs). These infections, including viral and bacterial etiology, pose a significant risk to these patients, often resulting in respiratory insufficiency and long-term impairments. Using expert consensus, we developed clinical recommendations on the management of LRTIs in children and adolescents with SNI. These recommendations emphasize comprehensive multidisciplinary care and antibiotic stewardship. Initial treatment should involve symptomatic care, including hydration, antipyretics, oxygen therapy, and respiratory support. In bacterial LRTIs, antibiotic therapy is initiated based on the severity of the infection, with aminopenicillin plus a beta-lactamase inhibitor recommended for community-acquired LRTIs and piperacillin-tazobactam for patients with chronic lung disease or tracheostomy. Ongoing management includes regular evaluations, adjustments to antibiotic therapy based on pathogen identification, and optimization of supportive care. Implementation of these recommendations aims to improve the diagnosis and treatment of LRTIs in children and adolescents with SNI. What is Known: • Children and adolescents with severe neurological impairment are particularly affected by severe and recurrent lower respiratory tract infections (LRTIs). • The indication and choice of antibiotic therapy for bacterial LRTI is often difficult because there are no evidence-based treatment recommendations for this heterogeneous but vulnerable patient population; the frequent overuse of broad-spectrum or reserve antibiotics in this patient population increases selection pressure for multidrug-resistant pathogens. What is New: • The proposed recommendations provide a crucial framework for focused diagnostics and treatment of LRTIs in children and adolescents with severe neurological impairment. • Along with recommendations for comprehensive and multidisciplinary therapy and antibiotic stewardship, ethical and palliative care aspects are taken into account.
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Affiliation(s)
- Maximilian David Mauritz
- Paediatric Palliative Care Centre, Children's and Adolescents' Hospital, 45711, Datteln, Germany.
- Department of Children's, Pain Therapy and Pediatric Palliative Care, Faculty of Health, School of Medicine , Herdecke University, 58448, WittenWitten, Germany.
| | - Ulrich von Both
- Department of Infectious Diseases, Dr von Hauner Children's Hospital, LMU University Hospital, 80337, Munich, Germany
| | - Christian Dohna-Schwake
- Department of Pediatrics I, Neonatology, Pediatric Intensive Care Medicine, and Pediatric Neurology, University Hospital Essen, 45147, Essen, Germany
| | - Christian Gille
- Department of Neonatology, Heidelberg University Children's Hospital, 69120, Heidelberg, Germany
| | - Carola Hasan
- Paediatric Palliative Care Centre, Children's and Adolescents' Hospital, 45711, Datteln, Germany
- Department of Children's, Pain Therapy and Pediatric Palliative Care, Faculty of Health, School of Medicine , Herdecke University, 58448, WittenWitten, Germany
| | - Johannes Huebner
- Department of Infectious Diseases, Dr von Hauner Children's Hospital, LMU University Hospital, 80337, Munich, Germany
| | - Markus Hufnagel
- Department of Paediatrics and Adolescent Medicine, Medical Faculty, University Medical Centre, University of Freiburg, 79106, Freiburg, Germany
| | - Markus Knuf
- Department for Pediatric and Adolescent Medicine, Worms Clinic, 67550, Worms, Germany
| | - Johannes G Liese
- Department of Paediatrics, Division of Paediatric Infectious Diseases, University Hospital of Wuerzburg, 97080, Würzburg, Germany
| | - Hanna Renk
- University Children's Hospital Tuebingen, 72076, Tuebingen, Germany
| | - Henriette Rudolph
- Department of Pediatrics, Goethe University Frankfurt, 60590, Frankfurt am Main, Germany
| | - Ulf Schulze-Sturm
- University Children's Hospital, University Medical Centre Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Arne Simon
- Pediatric Oncology and Hematology, University Hospital Homburg Saar, 66421, Homburg/Saar, Germany
| | - Florian Stehling
- Department of Pediatric Pulmonology and Sleep Medicine, University Children's Hospital Essen, 45147, Essen, Germany
| | - Tobias Tenenbaum
- Clinic for Child and Adolescent Medicine, Sana Klinikum Lichtenberg, Academic Teaching Hospital, Charité-Universitätsmedizin, 10365, Berlin, Germany
| | - Boris Zernikow
- Paediatric Palliative Care Centre, Children's and Adolescents' Hospital, 45711, Datteln, Germany
- Department of Children's, Pain Therapy and Pediatric Palliative Care, Faculty of Health, School of Medicine , Herdecke University, 58448, WittenWitten, Germany
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Che Hamzah AM, Chew CH, Al-Trad EI, Puah SM, Chua KH, A Rahman NI, Ismail S, Maeda T, Palittapongarnpim P, Yeo CC. Whole genome sequencing of methicillin-resistant Staphylococcus aureus clinical isolates from Terengganu, Malaysia, indicates the predominance of the EMRSA-15 (ST22-SCCmec IV) clone. Sci Rep 2024; 14:3485. [PMID: 38347106 PMCID: PMC10861583 DOI: 10.1038/s41598-024-54182-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 02/09/2024] [Indexed: 02/15/2024] Open
Abstract
Despite the importance of methicillin-resistant Staphylococcus aureus (MRSA) as a priority nosocomial pathogen, the genome sequences of Malaysian MRSA isolates are currently limited to a small pool of samples. Here, we present the genome sequence analyses of 88 clinical MRSA isolates obtained from the main tertiary hospital in Terengganu, Malaysia in 2016-2020, to obtain in-depth insights into their characteristics. The EMRSA-15 (ST22-SCCmec IV) clone of the clonal complex 22 (CC22) lineage was predominant with a total of 61 (69.3%) isolates. Earlier reports from other Malaysian hospitals indicated the predominance of the ST239 clone, but only two (2.3%) isolates were identified in this study. Two Indian-origin clones, the Bengal Bay clone ST772-SCCmec V (n = 2) and ST672 (n = 10) were also detected, with most of the ST672 isolates obtained in 2020 (n = 7). Two new STs were found, with one isolate each, and were designated ST7879 and ST7883. From the core genome phylogenetic tree, the HSNZ MRSA isolates could be grouped into seven clades. Antimicrobial phenotype-genotype concordance was high (> 95%), indicating the accuracy of WGS in predicting most resistances. Majority of the MRSA isolates were found to harbor more than 10 virulence genes, demonstrating their pathogenic nature.
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Affiliation(s)
- Ainal Mardziah Che Hamzah
- Faculty of Health Sciences, Universiti Sultan Zainal Abidin, 21300, Kuala Nerus, Terengganu, Malaysia
| | - Ching Hoong Chew
- Faculty of Health Sciences, Universiti Sultan Zainal Abidin, 21300, Kuala Nerus, Terengganu, Malaysia.
| | - Esra'a Ibrahim Al-Trad
- Centre for Research in Infectious Diseases and Biotechnology (CeRIDB), Faculty of Medicine, Universiti Sultan Zainal Abidin, 20400, Kuala Terengganu, Terengganu, Malaysia
- Faculty of Allied Medical Sciences, Jadara University, Irbid, Jordan
| | - Suat Moi Puah
- Department of Biomedical Science, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kek Heng Chua
- Department of Biomedical Science, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nor Iza A Rahman
- Centre for Research in Infectious Diseases and Biotechnology (CeRIDB), Faculty of Medicine, Universiti Sultan Zainal Abidin, 20400, Kuala Terengganu, Terengganu, Malaysia
| | - Salwani Ismail
- Centre for Research in Infectious Diseases and Biotechnology (CeRIDB), Faculty of Medicine, Universiti Sultan Zainal Abidin, 20400, Kuala Terengganu, Terengganu, Malaysia
| | - Toshinari Maeda
- Department of Biological Functions and Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-Ku, Kitakyushu, 808-0196, Japan
| | - Prasit Palittapongarnpim
- Pornchai Matangkasombut Center for Microbial Genomics (CENMIG), Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Chew Chieng Yeo
- Centre for Research in Infectious Diseases and Biotechnology (CeRIDB), Faculty of Medicine, Universiti Sultan Zainal Abidin, 20400, Kuala Terengganu, Terengganu, Malaysia.
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Jhelum H, Čerina D, Harbort CJ, Lindner A, Hanitsch LG, Leistner R, Schröder JT, von Bernuth H, Stegemann MS, Schürmann M, Zychlinsky A, Krüger R, Marsman G. Panton-Valentine leukocidin-induced neutrophil extracellular traps lack antimicrobial activity and are readily induced in patients with recurrent PVL + -Staphylococcus aureus infections. J Leukoc Biol 2024; 115:222-234. [PMID: 37943843 DOI: 10.1093/jleuko/qiad137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 10/04/2023] [Accepted: 10/09/2023] [Indexed: 11/12/2023] Open
Abstract
Staphylococcus aureus strains that produce the toxin Panton-Valentine leukocidin (PVL-SA) frequently cause recurrent skin and soft tissue infections. PVL binds to and kills human neutrophils, resulting in the formation of neutrophil extracellular traps (NETs), but the pathomechanism has not been extensively studied. Furthermore, it is unclear why some individuals colonized with PVL-SA experience recurring infections whereas others are asymptomatic. We thus aimed to (1) investigate how PVL exerts its pathogenicity on neutrophils and (2) identify factors that could help to explain the predisposition of patients with recurring infections. We provide genetic and pharmacological evidence that PVL-induced NET formation is independent of NADPH oxidase and reactive oxygen species production. Moreover, through NET proteome analysis we identified that the protein content of PVL-induced NETs is different from NETs induced by mitogen or the microbial toxin nigericin. The abundance of the proteins cathelicidin (CAMP), elastase (NE), and proteinase 3 (PRTN3) was lower on PVL-induced NETs, and as such they were unable to kill S. aureus. Furthermore, we found that neutrophils from affected patients express higher levels of CD45, one of the PVL receptors, and are more susceptible to be killed at a low PVL concentration than control neutrophils. Neutrophils from patients that experience recurring PVL-positive infections may thus be more sensitive to PVL-induced NET formation, which might impair their ability to combat the infection.
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Affiliation(s)
- Hina Jhelum
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Charitéplatz 1, 10117, Berlin, Germany
| | - Dora Čerina
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Charitéplatz 1, 10117, Berlin, Germany
| | - C J Harbort
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Charitéplatz 1, 10117, Berlin, Germany
| | - Andreas Lindner
- Institute of Tropical Medicine and International Health, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Leif Gunnar Hanitsch
- Department of Medical Immunology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Rasmus Leistner
- Institute of Hygiene and Environmental Medicine, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Jennyver-Tabea Schröder
- Department of Pediatric Surgery, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Horst von Bernuth
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
- Department of Immunology, Labor Berlin GmbH, Sylter Straße 2, 13353, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Miriam Songa Stegemann
- Department of Infectious Diseases and Respiratory Medicine, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Mariana Schürmann
- Department of Infectious Diseases and Respiratory Medicine, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Arturo Zychlinsky
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Charitéplatz 1, 10117, Berlin, Germany
| | - Renate Krüger
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Gerben Marsman
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Charitéplatz 1, 10117, Berlin, Germany
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Helbig U, Riemschneider C, Werner G, Kriebel N, Layer-Nicolaou F. Mandatory Notification of Panton-Valentine Leukocidin-Positive Methicillin-Resistant Staphylococcus aureus in Saxony, Germany: Analysis of Cases from the City of Leipzig in 2019. Microorganisms 2023; 11:1437. [PMID: 37374939 DOI: 10.3390/microorganisms11061437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/22/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
In Germany, Saxony is the only federal state where the detection of a Panton-Valentine Leukocidin (PVL)-positive Methicillin-resistant Staphylococcus aureus (MRSA) has to be notified to the local health authority (LHA). The LHA reports the case to the state health authority and introduces concrete infection control measures. We analyzed isolates from the respective cases in 2019, which were collected in local microbiological laboratories and sent to the National Reference Centre (NRC) for Staphylococci and Enterococci for strain characterization and typing. Antibiotic resistance testing was done by broth microdilution. Molecular characterization was performed using spa and SCCmec typing, MLST, and the PCR detection of marker genes associated with distinct MRSA lineages. Demographic and clinical data of the individual cases were assessed and the LHA performed epidemiological investigations. Thirty-nine (index) persons, diagnosed with a PVL-positive MRSA, were initially reported to the LHA. Most patients suffered from skin and soft-tissue infections (SSTI). For 21 of the index cases, household contacts were screened for MRSA. Seventeen out of 62 contacts were also colonized with a PVL-positive MRSA. The median age of altogether 58 individuals was 23.5 years. In over half of the cases, the home country was not Germany and/or a history of travel or migration was reported. Molecular characterization revealed the presence of various epidemic community-associated MRSA lineages, with "USA300", including the North American Epidemic (ST8-MRSA-IVa) and the South American Epidemic Clone (ST8-MRSA-IVc), the "Sri Lankan Clone" (ST5-MRSA-IVc), and the "Bengal Bay Clone" (ST772-MRSA-V) being more prevalent. In eight out of nine households, the contact persons were colonized with the same clone as the respective index case, suggesting a close epidemic and microbiological link. The obligation to report PVL-positive MRSA enables us to detect the occurrence of PVL-producing MRSA and its spread in the population as early as possible. Timely detection allows the targeted deployment of reliable anti-infective measures.
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Affiliation(s)
- Utta Helbig
- Department of Hygiene, Local Health Authority City of Leipzig, Rohrteichstraße 16-20, 04347 Leipzig, Germany
| | - Constance Riemschneider
- Department of Hygiene, Local Health Authority City of Leipzig, Rohrteichstraße 16-20, 04347 Leipzig, Germany
| | - Guido Werner
- National Reference Centre for Staphylococci and Enterococci, Division of Nosocomial Pathogens and Antimicrobial Resistances, Department of Infectious Diseases, Robert Koch-Institute, Wernigerode Branch, Burgstraße 37, 38855 Wernigerode, Germany
| | - Nancy Kriebel
- National Reference Centre for Staphylococci and Enterococci, Division of Nosocomial Pathogens and Antimicrobial Resistances, Department of Infectious Diseases, Robert Koch-Institute, Wernigerode Branch, Burgstraße 37, 38855 Wernigerode, Germany
| | - Franziska Layer-Nicolaou
- National Reference Centre for Staphylococci and Enterococci, Division of Nosocomial Pathogens and Antimicrobial Resistances, Department of Infectious Diseases, Robert Koch-Institute, Wernigerode Branch, Burgstraße 37, 38855 Wernigerode, Germany
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Minotti C, Tirelli F, Guariento C, Sturniolo G, Giaquinto C, Da Dalt L, Zulian F, Meneghel A, Martini G, Donà D. Impact of guidelines implementation on empiric antibiotic treatment for pediatric uncomplicated osteomyelitis and septic arthritis over a ten-year period: Results of the ELECTRIC study (ostEomyeLitis and sEptiC arThritis tReatment in children). Front Pediatr 2023; 11:1135319. [PMID: 36911022 PMCID: PMC9997840 DOI: 10.3389/fped.2023.1135319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 01/30/2023] [Indexed: 02/25/2023] Open
Abstract
Background Due to the growing evidence of the efficacy of intravenous (IV) cefazolin with an early switch to oral cefalexin in uncomplicated pediatric osteomyelitis (OM) and septic arthritis (SA) in children, we changed our guidelines for empiric antibiotic therapy in these conditions. This study aims at evaluating the impact of the guidelines' implementation in reducing broad-spectrum antibiotic prescriptions, duration of IV antibiotic treatment and hospital stay, treatment failure and recurrence. Materials and methods This is a retrospective, observational, quasi-experimental study. The four years pre-intervention were compared to the six years, ten months post-intervention (January 2012, through December 2015; January 2016, through October 31st, 2022). All patients aged 3 months to 18 years with OM or SA were evaluated for inclusion. Each population was divided into three groups: pre-intervention, post-intervention not following the guidelines, and post-intervention following the guidelines. Differences in antibiotic prescriptions such as Days of Therapy (DOT), activity spectrum and Length of Therapy (LOT), length of hospital stay (LOS), broad-spectrum antibiotics duration (bsDOT), treatment failure and relapse at six months were analyzed as outcomes. Results Of 87 included patients, 48 were diagnosed with OM (8 pre-intervention, 9 post-intervention not following the guidelines and 31 post-intervention following the guidelines) and 39 with SA (9 pre-intervention, 12 post-intervention not following the guidelines and 18 post-intervention following the guidelines). In OM patients, IV DOT, DOT/LOT ratio, and bsDOT were significantly lower in the guidelines group, with also the lowest proportion of patients discharged on IV treatment. Notably, significantly fewer cases required surgery in the post-intervention groups. Considering SA, LOS, IV DOT, DOT/LOT ratio, and bsDOT were significantly lower in the guidelines group. The treatment failure rate was comparable among all groups for both OM and SA. There were no relapse cases. The overall adherence was between 72 and 100%. Conclusions The implementation of guidelines was effective in decreasing the extensive use of broad-spectrum antibiotics and combination therapy for both OM and SA. Our results show the applicability, safety, and efficacy of a narrow-spectrum IV empirical antibiotic regimen with cefazolin, followed by oral monotherapy with first/second-generation cephalosporins, which was non-inferior to broad-spectrum regimens.
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Affiliation(s)
- Chiara Minotti
- Division of Pediatric Infectious Diseases, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Francesca Tirelli
- Pediatric Rheumatology Unit, Department of Women's and Children's Health, University of Padua, Padua, Italy.,Pediatric Emergency Department, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Chiara Guariento
- Division of Pediatric Infectious Diseases, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Giulia Sturniolo
- Division of Pediatric Infectious Diseases, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Carlo Giaquinto
- Division of Pediatric Infectious Diseases, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Liviana Da Dalt
- Pediatric Emergency Department, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Francesco Zulian
- Pediatric Rheumatology Unit, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Alessandra Meneghel
- Pediatric Rheumatology Unit, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Giorgia Martini
- Pediatric Rheumatology Unit, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Daniele Donà
- Division of Pediatric Infectious Diseases, Department of Women's and Children's Health, University of Padua, Padua, Italy
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Wood JB, Hawryluk B, Lynch D, Claxton G, Russell K, Bennett WE, Wiehe SE, Carroll AE. Identifying Patient-Centered Outcomes for Caregivers and Children With Musculoskeletal Infections. Open Forum Infect Dis 2022; 10:ofac671. [PMID: 36655190 PMCID: PMC9835755 DOI: 10.1093/ofid/ofac671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
Background Musculoskeletal infections (MSKI), including osteomyelitis and septic arthritis, are among the most common invasive infections in children and have the potential to cause significant morbidity. Guidelines have been developed to optimize care based on clinician-developed endpoints. Patient-centered outcomes have not been defined for children with MSKI. This study identified outcomes most important to caregivers and patients with MSKI. Methods This was a single-center prospective qualitative study of children 6 months to 18 years of age hospitalized with MSKI from November 2019 to September 2021. Using design-research methods, patients and caregivers participated in interviews and/or completed journals to describe their experiences during acute infection and recovery from MSKI. Results A total of 51 patient/caregivers were approached to participate in the study, 35 of whom declined to participate, resulting in 8 interviews conducted and 14 journals collected from 16 patient/caregivers. From these, a journey map was created highlighting points of stress during the onset of symptoms, through hospitalization, and returning home with new challenges. In addition, patient-centered outcomes were identified. For caregivers, these included managing mental health, managing responsibilities, and receiving support. Both caregivers and patients shared the importance of understanding of treatment plans and responsibilities. For patients, improving mental and physical health was important. Conclusions Management of children with MSKI is complex and requires a multidisciplinary team approach. Validation of the outcomes identified and development of a measurement tool are needed. Addressing the patient-centered outcomes we identified in this study can greatly improve the holistic care of children with MSKI.
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Affiliation(s)
- James B Wood
- Correspondence: James B. Wood, MD, MSCI, Center for Pediatric and Adolescent Comparative Effectiveness Research, 410 W. 10th Street, HITS Building 2000A, Indianapolis, IN 46202 (). Aaron E. Carroll, Center for Pediatric and Adolescent Comparative Effectiveness Research, 410 W. 10th Street, HITS Building 2000A, Indianapolis, IN 46202 ()
| | - Bridget Hawryluk
- Indiana Clinical and Translational Sciences Institute's Patient Engagement Core, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Dustin Lynch
- Indiana Clinical and Translational Sciences Institute's Patient Engagement Core, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Gina Claxton
- Indiana Clinical and Translational Sciences Institute's Patient Engagement Core, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Kelsey Russell
- Center for Pediatric and Adolescent Comparative Effectiveness Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - William E Bennett
- Center for Pediatric and Adolescent Comparative Effectiveness Research, Indiana University School of Medicine, Indianapolis, Indiana, USA,Indiana Clinical and Translational Sciences Institute's Patient Engagement Core, Indiana University School of Medicine, Indianapolis, Indiana, USA,Division of Pediatric Gastroenterology, Hepatology and Nutrition, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Sarah E Wiehe
- Indiana Clinical and Translational Sciences Institute's Patient Engagement Core, Indiana University School of Medicine, Indianapolis, Indiana, USA,Children's Health Services Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Aaron E Carroll
- Correspondence: James B. Wood, MD, MSCI, Center for Pediatric and Adolescent Comparative Effectiveness Research, 410 W. 10th Street, HITS Building 2000A, Indianapolis, IN 46202 (). Aaron E. Carroll, Center for Pediatric and Adolescent Comparative Effectiveness Research, 410 W. 10th Street, HITS Building 2000A, Indianapolis, IN 46202 ()
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7
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Aguilar-Gómez NE, Merida-Vieyra J, Isunza-Alonso OD, Morales-Pirela MG, Colín-Martínez O, Juárez-Benítez EJ, García de la Puente S, Aquino-Andrade A. Surveillance of osteoarticular infections caused by Staphylococcus aureus in a paediatric hospital in Mexico City. Front Cell Infect Microbiol 2022; 12:999268. [PMID: 36569208 PMCID: PMC9774039 DOI: 10.3389/fcimb.2022.999268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/20/2022] [Indexed: 12/13/2022] Open
Abstract
Staphylococcus aureus is the main aetiologic agent of osteoarticular infections (OAIs) in paediatric patients. The aim of this prospective unicenter study was to describe the phenotypic and genotypic characteristics of S. aureus isolates obtained from OAIs in paediatric patients admitted to tertiary care hospital. Through a surveillance program called OsteoCode, a multidisciplinary team was created and we identified 27 patients with OAIs caused by S. aureus from 2019 to 2021. The susceptibility profile, virulence factors, biofilm formation, pulsed-field gel electrophoresis (PFGE), clonal complex (CC) and sequence type (ST) were determined. In addition, the clinical characteristics and evolution of the patients presented six months after the diagnosis of OAIs were described. Ninety-two percent of the isolates were methicillin-sensitive S. aureus (MSSA). In methicillin-resistant S. aureus (MRSA), SCCmec-II and SCCmec-V were detected. The pvl gene was only observed in MSSA (18.5%) and was associated with highest fever (p=0.015), multiple localization (p=0.017), and soft tissue sites of infection beyond the bone (pyomyositis, pulmonary abscess) (p=0.017). Biofilm formation was detected in 55.6% of isolates. The most common CC were CC5 and CC30 which represent the most common linages for bone and joint infections worldwide. The isolates were distributed in different STs, and ST672 was predominant. MRSA were associated with a longer duration of intravenous treatment and a prolonged hospital stay (p=0.023). Recurrent infection occurred in five children and orthopaedic complications in 33.3% of patients. This is the first study that reflects the epidemiology of S. aureus in OAIs in paediatric patients in Mexico; a clear predominance of MSSA distributed in different STs was observed. Our findings highlight that a multidisciplinary team is required for the diagnosis and treatment of OAIs.
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Affiliation(s)
| | - Jocelin Merida-Vieyra
- Molecular Microbiology Laboratory, Instituto Nacional de Pediatria, Mexico City, Mexico
| | | | | | - Oscar Colín-Martínez
- Department of Orthopaedic Surgery, Instituto Nacional de Pediatria, Mexico City, Mexico
| | | | | | - Alejandra Aquino-Andrade
- Molecular Microbiology Laboratory, Instituto Nacional de Pediatria, Mexico City, Mexico,*Correspondence: Alejandra Aquino-Andrade,
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Selb R, Albert-Braun S, Weltzien A, Schürmann J, Werner G, Layer F. Characterization of Methicillin-resistant Staphylococcus aureus From Children at Hospital Admission: Experiences From a Hospital in a German Metropolitan Area. Pediatr Infect Dis J 2022; 41:720-727. [PMID: 35703280 DOI: 10.1097/inf.0000000000003596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Since the 1990s, community-associated Methicillin-resistant Staphylococcus aureus (CA-MRSA) are described as emerging independent of health care. CA-MRSA is associated with the colonization and infection of healthy, immunocompetent younger individuals. While skin and soft tissue infections (SSTI) are predominant, life-threatening syndromes can also occur. METHODS In this retrospective study, we investigated MRSA stains isolated from community-onset infections and from MRSA screening of children at admission to a tertiary-care hospital in 2012-2018. In total, 102 isolates were subjected to antibiotic susceptibility testing by broth microdilution, spa -typing, multilocus sequence typing, SCC mec typing and virulence/resistance gene detection by polymerase chain reaction. RESULTS The majority of isolates originated from community-onset infections (80/102), of these primarily from SSTI (70/80). Additional strains were isolated by MRSA screening (22/102). In total 61.8% of the MRSA carried the gene for the Panton-Valentine leukocidin ( lukPV ). Molecular characterization of isolates revealed various epidemic MRSA clones, circulating in both community and hospital settings. Most prevalent epidemic lineages were isolates of the "European CA-MRSA clone" (CC80-MRSA-IV), the "Bengal Bay clone" (ST772-MRSA-V), or the "USA300 NAE clone" (ST8-MRSA-IVa). CONCLUSIONS Our data highlight the importance of CA-MRSA causing SSTI in children. More frequent microbiological and molecular analysis of these strains is important for targeted treatment and can provide valuable data for molecular surveillance of the pathogen.
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Affiliation(s)
- Regina Selb
- From the Unit for Mycotic and Parasitic Agents and Mycobacteria, Department of Infectious Diseases, Robert Koch Institute, Berlin, Germany
- European Public Health Microbiology Programme (EUPHEM), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | | | - Alexandra Weltzien
- Department of Paediatric Surgery, Varisano Klinikum Frankfurt Höchst, Frankfurt, Germany
| | - Jacqueline Schürmann
- National Reference Centre for Staphylococci and Enterococci, Division Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, Wernigerode Branch, Wernigerode, Germany
| | - Guido Werner
- National Reference Centre for Staphylococci and Enterococci, Division Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, Wernigerode Branch, Wernigerode, Germany
| | - Franziska Layer
- National Reference Centre for Staphylococci and Enterococci, Division Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, Wernigerode Branch, Wernigerode, Germany
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9
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Paediatric and adult patients from New Caledonia Island admitted to the ICU for community-acquired Panton-Valentine leucocidin-producing Staphylococcus aureus infections. Sci Rep 2022; 12:11024. [PMID: 35773383 PMCID: PMC9247012 DOI: 10.1038/s41598-022-15337-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 06/22/2022] [Indexed: 11/10/2022] Open
Abstract
Severe infections involving Panton-Valentine leukocidin-producing Staphylococcus aureus (PVL + Sa) are increasing. This monocentre, retrospective descriptive cohort assessed clinical characteristics and outcome of paediatric and adult patients admitted for community-acquired PVL + Sa infections to the unique intensive care unit (ICU) on New Caledonia Island. Overall, 72 patients (including 23 children) admitted for acute respiratory failure (42%), sepsis/septic shock (21%), and/or postoperative care (32%) were analysed. Most patients had pulmonary (64%), skin/soft tissue (SSTI) (54%) and/or osteoarticular (38%) infections. Multifocal infections (≥ 2 sites) and bacteraemia were reported in 65% and 76% of the patients, respectively. Methicillin-resistant S. aureus isolates were reported in 61% of adult cases versus 30% in children (p < 0.05). Mechanical ventilation, vasoactive support and source control were administered in 53%, 43% and 58% of the patients, respectively. All paediatric patients received adequate empirical antibiotic therapy versus 30/49 adults (p < 0.001). Adequate documented therapy was obtained ≤ 72 h in 70/72 (97%) patients. Death was only reported in adults (n = 10 (14%)), mainly during pulmonary infection (22%), SSTIs (21%) and bacteraemia (24%)). In summary, in ICU patients from New Caledonia Island the clinical presentation of severe community-acquired PVL + Sa infections seems different from Western European observations with high rates of multifocal infections and methicillin-resistant strains.
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10
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Fatal SARS-CoV-2-Associated Panton-Valentine Leukocidin-producing Staphylococcal Bacteremia: A Nationwide Multicenter Cohort Study. Pediatr Infect Dis J 2022; 41:e142-e145. [PMID: 35093994 DOI: 10.1097/inf.0000000000003476] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We reviewed all cases of Panton-Valentine leukocidin-producing Staphylococcus aureus (PVL-SA) bacteremia in Danish children between 2016 and 2021. We found 2 fatal cases with preceding viral prodrome due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Given the usual benign course of SARS-CoV-2 infection in children, awareness of possible superinfection with PVL-SA in a child with rapid deterioration is crucial to ensure adequate treatment, including antimicrobial drugs with antitoxin effect.
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11
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Lu M, Fu M, Zhang Y, Shen T, Xie H, Liu D. Septicaemia with deep venous thrombosis and necrotising pneumonia caused by acute community-acquired methicillin-resistant Staphylococcus aureus in an infant with a three-year follow-up: a case report. BMC Infect Dis 2022; 22:189. [PMID: 35209857 PMCID: PMC8876069 DOI: 10.1186/s12879-022-07166-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 02/16/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) is a common pathogen that usually causes bacteraemia, osteomyelitis, as well as skin and soft tissue infections. However, deep venous thrombosis (DVT) and necrotising pneumonia are rare in infants. CASE PRESENTATION We report the case of a one-month-five-day-old girl who was hospitalised for DVT and necrotising pneumonia due to septicaemia associated with Staphylococcus aureus. She recovered after treatment with intravenous antibiotics and multiple anticoagulant therapy, but DVT persisted at the three-year follow-up. Collateral circulation around the DVT was well-formed. Post thrombotic syndrome was not observed. CONCLUSIONS Staphylococcus aureus complicated by DVT and necrotising pneumonia is rare and can be successfully treated.
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Affiliation(s)
- Mei Lu
- Department of Paediatrics, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, China
| | - Meijiao Fu
- Department of Paediatrics, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, China
| | - Yanhong Zhang
- Department of Ultrasound, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, 361003, China
| | - Tong Shen
- Department of Paediatrics, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, China
| | - Hui Xie
- Department of Paediatrics, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen, 361003, Fujian, China
| | - Dengli Liu
- Department of Paediatrics, The First Affiliated Hospital of Xiamen University, Xiamen, 361003, Fujian, China.
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12
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Goemanne S, Tilmanne A, Biarent D, Smeesters P, Simoni P, Mahadeb BA, Vicinanza A. Severe Staphylococcus aureus infections in children: Case reports and management of positive Panton-Valentine leucocidin cases. Front Pediatr 2022; 10:1003708. [PMID: 36313888 PMCID: PMC9612512 DOI: 10.3389/fped.2022.1003708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/09/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Staphylococcus aureus is a well-known bacterium associated with carriage and responsible for different types of infections. The Panton-Valentine leucocidin (PVL) is a key virulence factor causing tissue necrosis. PVL can, however, be present in both benign and life-threatening infections. CASE REPORTS AND MANAGEMENT We present three pediatric severe infections occurring over a period of only three weeks, in February 2021, and caused by genetically unrelated methicillin-sensitive Staphylococcus aureus producing PVL in a tertiary children's hospital in Belgium. The first one presented with necrotizing pneumonia, the second one with a neck abscess extended to the mediastinum, and the last one had sacral osteomyelitis complicated by endocarditis. The management of these infections is mostly based on expert opinions. The most appropriate treatment seems to be the combination of early surgical drainage of infected collections with an antibiotic regimen associating two antibiotics; beta-lactams and either clindamycin or linezolid. Human immunoglobulins also appear to be useful as adjunctive therapy. CONCLUSION PVL-producing Staphylococcus aureus is associated with life-threatening infections in children. Prompt management is needed including surgery and appropriate antibiotic regimens.
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Affiliation(s)
- Sophie Goemanne
- Department of Pediatrics, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Anne Tilmanne
- Division of Pediatric Infectious Diseases and Infection Prevention and Control, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Dominique Biarent
- Pediatric Intensive Care Unit, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Pierre Smeesters
- Department of Pediatrics, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Division of Pediatric Infectious Diseases and Infection Prevention and Control, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Laboratory of Molecular Bacteriology, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Paolo Simoni
- Department of Radiology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Bhavna Ansuya Mahadeb
- Department of Microbiology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Alfredo Vicinanza
- Pediatric Intensive Care Unit, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles (ULB), Brussels, Belgium
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13
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Aung MS, San T, Urushibara N, San N, Hlaing MS, Soe PE, Htut WHW, Moe I, Mon WLY, Chan ZCN, Kobayashi N. Clonal Diversity and Molecular Characteristics of Methicillin-Susceptible and -Resistant Staphylococcus aureus from Pediatric Patients in Myanmar. Microb Drug Resist 2021; 28:191-198. [PMID: 34619061 DOI: 10.1089/mdr.2021.0051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The spread of multidrug-resistant and virulent Staphylococcus aureus among children is a public health concern, but the actual conditions in Myanmar have not been characterized. In this study, a total of 244 clinical isolates of S. aureus collected from pediatric patients in Yangon Children's Hospital during a 1-year period were analyzed for their drug resistance and genetic features. Methicillin-resistant S. aureus (MRSA) accounted for 19.7% of isolates associated with staphylococcal cassette chromosome mec (SCCmec) type III, IV, or V. Panton-Valentine leukocidin (PVL) genes were detected in 61.5% of all isolates, with a significantly higher prevalence in methicillin-susceptible S. aureus (MSSA; 67.9%) than in MRSA (35.4%) isolates. Sequence type (ST) 239/SCCmec-III was the most common MRSA clone lacking PVL genes, while PVL-positive MRSA belonged to mostly ST361/SCCmec-V and ST772/SCCmec-V. Among MSSA isolates, ST121, ST2990, ST88, and ST1930 were dominant, harboring mostly PVL genes. ST239 MRSA isolates exhibited the highest resistance rates to antimicrobials, and quinolone resistance was found in the dominant MRSA clones (ST239, ST361, and ST772) and some MSSA lineages. The present study revealed the prevalence and clonal diversity of MRSA/MSSA in children in Myanmar in relation to drug resistance and virulence determinants.
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Affiliation(s)
- Meiji Soe Aung
- Department of Hygiene, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Thida San
- Yangon Children's Hospital, Yangon, Myanmar
| | - Noriko Urushibara
- Department of Hygiene, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Nilar San
- Department of Microbiology, University of Medicine 2, Yangon, Myanmar
| | - Myat Su Hlaing
- Department of Microbiology, University of Medicine 2, Yangon, Myanmar
| | - Pan Ei Soe
- National Health Laboratory, Yangon, Myanmar
| | | | - Ingin Moe
- Yangon Children's Hospital, Yangon, Myanmar
| | | | | | - Nobumichi Kobayashi
- Department of Hygiene, Sapporo Medical University School of Medicine, Sapporo, Japan
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14
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Castellazzi ML, Bosis S, Borzani I, Tagliabue C, Pinzani R, Marchisio P, di Pietro GM. Panton-valentine leukocidin Staphylococcus aureus severe infection in an infant: a case report and a review of the literature. Ital J Pediatr 2021; 47:158. [PMID: 34274022 PMCID: PMC8285845 DOI: 10.1186/s13052-021-01105-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 06/08/2021] [Indexed: 01/05/2023] Open
Abstract
Background Panton-Valentine leukocidin (PVL) is one of the major virulence factor of Staphylococcus aureus (SA) that might be associated with invasive life-threating infections. A prompt diagnosis and adequate treatment are essential in achieving the best outcome and avoiding serious sequelae. We describe a case of severe invasive PVL-SA infection in an infant. A literature review starting from 2010 was also performed in order to discuss clinical presentations, radiological findings, treatment and outcome. Case presentation This is a case of a 6-month-old boy who rapidly developed high fever and poor general condition. He was diagnosed as having multiple muscular abscesses, multiple foci of osteomyelitis and bloodstream infections caused by Panton-Valentine leukocidin Methicillin-resistant Staphylococcus aureus. He received intravenous antibiotics and surgical drainage of the abscess with progressive recovery. Conclusion Our report highlights the importance of improving awareness of this severe infection, as a prompt diagnosis and adequate manage is essential in order to save life and to prevent serious complications.
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Affiliation(s)
- Massimo Luca Castellazzi
- Paediatric Emergency Department, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Samantha Bosis
- Paediatric Highly Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Irene Borzani
- Radiology Unit - Paediatric Division, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Claudia Tagliabue
- Paediatric Highly Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Raffaella Pinzani
- Paediatric Highly Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Paola Marchisio
- Paediatric Highly Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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15
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Vazquez-Rosas GJ, Merida-Vieyra J, Aparicio-Ozores G, Lara-Hernandez A, De Colsa A, Aquino-Andrade A. Molecular Characterization of Staphylococcus aureus Obtained from Blood Cultures of Paediatric Patients Treated in a Tertiary Care Hospital in Mexico. Infect Drug Resist 2021; 14:1545-1556. [PMID: 33911882 PMCID: PMC8071697 DOI: 10.2147/idr.s302416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/05/2021] [Indexed: 12/29/2022] Open
Abstract
Purpose Staphylococcus aureus is one of the main causative agents of hospital-acquired (HA) infections. In Mexico, information about the characteristics of clinical S. aureus isolates is limited. Our aim was to characterize S. aureus strains obtained from blood cultures of paediatric patients treated in a tertiary care hospital. Materials and Methods We analysed 249 S. aureus isolates over the period from 2006 to 2019, and their resistance profiles were determined. The isolates were classified into methicillin-resistant S. aureus (MRSA) or methicillin-sensitive S. aureus (MSSA). Staphylococcal cassettes chromosome mec (SCCmec) were detected. Virulence genes (cna, clfA, clfB, eta, etb, fnbA, fnbB, hla, pvl, sec, and tsst) were amplified, and their clonal relationships were established by pulsed-field gel electrophoresis (PFGE), multilocus sequence typing (MLST) and clonal complex (CC) typing. We reviewed one hundred medical files to collect clinical information. Results Thirty-eight percent of the isolates were MRSA and showed an expanded profile of resistance to other non-beta-lactam antibiotics, while MSSA strains presented a reduced resistance profile. SCCmec-II was the most frequent element (86.3%). Eight virulence factors were detected in MSSA and six in MRSA. The pvl gene was detected in four MRSA-SCCmec-IV isolates (P≤0.0001). MRSA isolates were distributed among 14 clones and were classified into 15 sequence types (ST); the most frequent was ST1011 (17%). The most common CC in MRSA was CC5 (69%, P≤0.0001), and in MSSA, it was CC30 (30%, P≤0.0001). Eighty-seven percent of MRSA isolates were HA-MRSA, and 13% were community-acquired MRSA (CA-MRSA). Of 21 HA-MRSA isolates, 17 had SCCmec-II, while two CA-MRSA isolates had SCCmec-IV. Of MSSA isolates, 77% were derived from HA infections and 23% from CA infections. Conclusion MSSA isolates had more virulence factors. MRSA isolates were resistant to more non-beta-lactam antibiotics, and those with SCCmec-IV expressed a greater variety of virulence factors. Most S. aureus isolates belonged to CC5.
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Affiliation(s)
- Guillermo Jose Vazquez-Rosas
- Molecular Microbiology Laboratory, Instituto Nacional de Pediatria, Mexico City, Mexico.,Medical Bacteriology Laboratory, Instituto Politecnico Nacional, Mexico City, Mexico
| | - Jocelin Merida-Vieyra
- Molecular Microbiology Laboratory, Instituto Nacional de Pediatria, Mexico City, Mexico
| | | | | | - Agustin De Colsa
- Molecular Microbiology Laboratory, Instituto Nacional de Pediatria, Mexico City, Mexico.,Department of Paediatric Infectious Diseases, Instituto Nacional de Pediatria, Mexico City, Mexico
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16
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Abstract
PURPOSE OF REVIEW To provide a current overview of sepsis pathophysiology. RECENT FINDINGS The emphasis on sepsis pathophysiology has moved away from the pathogen - the initiating factor - and instead is focussed upon the abnormal and exaggerated host response. Instead of targeted eradication of the infection, the host response activates or suppresses multiple downstream pathways, leading to multiple organ dysfunction. SUMMARY Sepsis represents a dysregulated host response to infection leading to organ dysfunction. Here, the pathogen triggers an initial exaggerated inflammatory-immune response that leads to activation or suppression of multiple endothelial, hormonal, bioenergetic, metabolic, immune, and other pathways. These, in turn, produce the circulatory and metabolic perturbations resulting in organ dysfunction. This review will provide an overview of underlying mechanisms and propose that these processes, whereas superficially viewed as dysfunctional, may actually be adaptive/protective in the first instance, though spilling over into maladaptation/harm depending on the magnitude of the host response.
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17
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Kutane Infektionen durch Staphylokokken und Streptokokken. HAUTNAH DERMATOLOGIE 2021. [PMCID: PMC7893616 DOI: 10.1007/s15012-020-6595-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Perret C, Le Corre N, Castro-Rodriguez JA. Emergent Pneumonia in Children. Front Pediatr 2021; 9:676296. [PMID: 34222146 PMCID: PMC8247473 DOI: 10.3389/fped.2021.676296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 05/21/2021] [Indexed: 12/11/2022] Open
Abstract
In recent decades there have been multiple pathogens, viruses and bacteria, which have emerged as causal agents of pneumonia affecting adults, albeit less frequently, to children. For the purposes of this article we have classified emerging pathogens as follows: True emerging, to pathogens identified for the very first time affecting human population (SARS-CoV-1, SARS-CoV-2, MERS-CoV, avian influenza, and hantavirus); Re-emerging, to known pathogens which circulation was controlled once, but they have reappeared (measles, tuberculosis, antimicrobial resistant bacteria such as CA-MRSA, Mycoplasma pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Stenotrophomonas maltophilia, and new serotypes of post-vaccine pneumococcal); and finally, those that we have called old known with new presentations, including common pathogens that, in particular condition, have changed their form of presentation (rhinovirus, and non-SARS coronavirus). We will review for each of them their epidemiology, forms of presentation, therapy, and prognosis in children compared to the adult with the aim of being able to recognize them to establish appropriate therapy, prognostics, and effective control measures.
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Affiliation(s)
- Cecilia Perret
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nicole Le Corre
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jose A Castro-Rodriguez
- Department of Pediatric Pulmonology and Cardiology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
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19
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Osteomyelitis, Venous Thrombosis, and Septic Emboli in a Pediatric Patient: A Case Report. Plast Surg Nurs 2020; 40:197-201. [PMID: 33259420 DOI: 10.1097/psn.0000000000000332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
New virulence factors, such as the Panton-Valentine leukocidin (PVL), are appearing during Staphylococcus aureus infections occurring in the pediatric population. Such factors increase the aggressiveness and risk of dissemination of the bacteria, causing infections to be life-threatening. An early diagnosis is thus especially important. We present a case of osteomyelitis, venous thrombosis, and septic emboli occurring in a pediatric patient that should trigger suspicion of a PVL-positive strain. A multidisciplinary approach is necessary to enable rapid diagnosis and early treatment, which is essential for successful management of these infections. Management is based on broad-spectrum antibiotics, in combination with aggressive surgical treatment and antithrombotic therapy. In patients infected with S. aureus whose condition worsens quickly, PVL gene sequencing should be considered.
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20
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Forbes JD. Clinically Important Toxins in Bacterial Infection: Utility of Laboratory Detection. CLINICAL MICROBIOLOGY NEWSLETTER 2020; 42:163-170. [PMID: 33046946 PMCID: PMC7541054 DOI: 10.1016/j.clinmicnews.2020.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The elaboration of proteins that damage host cells is fundamental to the pathogenesis of many bacterial pathogens. The clinical significance of many bacterial toxins is well recognized, and routine detection is necessary to confirm definitive diagnosis for some types of infectious diseases. Determining the clinical significance of a toxin involves many factors, including the toxin's prevalence, virulence, and role in disease pathogenesis. While essential from a diagnostic perspective, toxin detection has the potential to be important for patient management decision making, as well as infection prevention and control measures. This review focuses on the history, epidemiology, pathogenesis, clinical presentation, and management of infections associated with well-defined, clinically important toxins (such as Shiga toxin-producing Escherichia coli), as well as those that are less well defined (such as Staphylococcus aureus' Panton-Valentine leukocidin) where detection may yield clinically important information.
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Affiliation(s)
- Jessica D Forbes
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
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21
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Congedi S, Minotti C, Giaquinto C, Da Dalt L, Donà D. Acute infectious osteomyelitis in children: new treatment strategies for an old enemy. World J Pediatr 2020; 16:446-455. [PMID: 32394145 DOI: 10.1007/s12519-020-00359-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 03/17/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Acute osteomyelitis still represents a significant clinical challenge, with an increasing incidence in paediatric population. A careful assessment and a rapid diagnosis with proper timing and choice of empirical antimicrobial therapy are necessary to avoid sequelae. The initial treatment should consist of empirical antibiotic therapy, to cover the major responsible pathogens in each age group. DATA SOURCES We made a literature search with PubMed and Cochrane database from 2000 to 2019 in English, French, and Spanish languages using the key words "osteomyelitis, children, clinical, diagnosis, and treatment". RESULTS The child's clinical features, age, and the microbiological profile of the geographic area should be evaluated for diagnosis and in the choice of antibiotic treatment. Latest data suggest the administration of intravenous antibiotics for a short period, with subsequent oral therapy, according to the improvement of clinical status and inflammatory markers. For children older than 3 months, the shift to oral medications is already possible after a short course of intravenous therapy, until recovery. The timing for the shift from cefazolin to cephalexin or cefuroxime, intravenous clindamycin to oral clindamycin, and intravenous ceftriaxone + oxacillin to oral equivalents will be decided according to the improvement of clinical status and inflammatory markers. We also present the approach to osteomyelitis due to difficult pathogens, such as Methicillin-resistant Staphylococcus aureus (MRSA) and Panton-Valentine leukocidin (PVL)-positive S. aureus infections. CONCLUSION In this review, we present the current approach to the clinical diagnosis and management of osteomyelitis in childhood, with an update on recent recommendations, as a useful instrument to understand the rationale of antibiotic therapy.
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Affiliation(s)
- Sabrina Congedi
- Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Chiara Minotti
- Department of Women's and Children's Health, University of Padua, Padua, Italy.
| | - Carlo Giaquinto
- Division of Paediatric Infectious Diseases, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Liviana Da Dalt
- Paediatric Emergency Department, Department of Women's and Children's Health, University of Padua, Padua, Italy
| | - Daniele Donà
- Division of Paediatric Infectious Diseases, Department of Women's and Children's Health, University of Padua, Padua, Italy
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22
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Bennett MR, Thomsen IP. Epidemiological and Clinical Evidence for the Role of Toxins in S. aureus Human Disease. Toxins (Basel) 2020; 12:toxins12060408. [PMID: 32575633 PMCID: PMC7354447 DOI: 10.3390/toxins12060408] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 12/21/2022] Open
Abstract
Staphylococcus aureus asymptomatically colonizes approximately 30–50% of the population and is a leading cause of bacteremia, bone/joint infections, and skin infections in the US. S. aureus has become a major public health threat due to antibiotic resistance and an increasing number of failed vaccine attempts. To develop new anti-staphylococcal preventive therapies, it will take a more thorough understanding of the current role S. aureus virulence factors play in contributing to human disease. This review focuses on the clinical association of individual toxins with S. aureus infection as well as attempted treatment options. Further understanding of these associations will increase understanding of toxins and their importance to S. aureus pathogenesis.
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Affiliation(s)
- Monique R. Bennett
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA;
- Vanderbilt Vaccine Research Program, Nashville, TN 37232, USA
- Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Isaac P. Thomsen
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA;
- Vanderbilt Vaccine Research Program, Nashville, TN 37232, USA
- Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Correspondence:
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Successful Right Atrium-Pulmonary Artery ECMO in an Infant With Severe Necrotizing Pneumonia and Bilateral Bronchopleural Fistula. Indian Pediatr 2020. [DOI: 10.1007/s13312-020-1768-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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