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Carrel M, Smith M, Shi Q, Hasegawa S, Clore GS, Perencevich EN, Goto M. Antimicrobial Resistance Patterns of Outpatient Staphylococcus aureus Isolates. JAMA Netw Open 2024; 7:e2417199. [PMID: 38874923 PMCID: PMC11179135 DOI: 10.1001/jamanetworkopen.2024.17199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 04/17/2024] [Indexed: 06/15/2024] Open
Abstract
Importance Oral non-β-lactam antibiotics are commonly used for empirical therapy of Staphylococcus aureus infections, especially in outpatient settings. However, little is known about potential geographic heterogeneity and temporal trends in the prevalence of S aureus resistance to non-β-lactams in the US. Objective To characterize the spatiotemporal trends of resistance to non-β-lactam antibiotics among community-onset S aureus infections, including regional variation in resistance rates and geographical heterogeneity in multidrug resistance. Design, Setting, and Participants This cross-sectional study used data from Veterans Health Administration clinics collected from adult outpatients with S aureus infection in the conterminous 48 states and Washington, DC, from January 1, 2010, to December 31, 2019. Data were analyzed from January to November 2023. Exposures Resistance to lincosamides (clindamycin), tetracyclines, sulfonamides (trimethoprim-sulfamethoxazole [TMP-SMX]), and macrolides. Main Outcomes and Measures Spatiotemporal variation of S aureus resistance to these 4 classes of non-β-lactam antibiotics, stratified by methicillin-resistant S aureus (MRSA) and methicillin-sensitive S aureus (MSSA), and subdivided by regions of the US (Northeast, Midwest, South, and West). Trend tests and bivariate mapping were used to determine significant changes in resistant proportions over time and identify counties where rates of resistance to multiple non-β-lactams were high. Results A total of 382 149 S aureus isolates from 268 214 unique outpatients (mean [SD] age, 63.4 [14.8] years; 252 910 males [94.29%]) were analyzed. There was a decrease in the proportion of MRSA nationwide, from 53.6% in 2010 to 38.8% in 2019. Among MRSA isolates, we observed a significant increase in tetracycline resistance (from 3.6% in 2010 to 12.8% in 2019; P for trend < .001) and TMP-SMX resistance (from 2.6% in 2010 to 9.2% in 2019; P for trend < .001), modest and not significant increases in clindamycin resistance (from 24.2% in 2010 to 30.6% in 2019; P for trend = .34), and a significant decrease in macrolide resistance (from 73.5% in 2010 to 60.2% in 2019; P for trend < .001). Among MSSA isolates, significant upward trends in clindamycin, tetracyclines, and TMP-SMX resistance were observed. For example, tetracycline resistance increased from 3.7% in 2010 to 9.1% in 2019 (P for trend < .001). Regional stratification over time showed that the Northeast had slightly higher rates of clindamycin resistance but lower rates of tetracycline resistance, while the South had notably higher rates of resistance to tetracyclines and TMP-SMX, particularly among MRSA isolates. Bivariate mapping at the county scale did not indicate clear regional patterns of shared high levels of resistance to the 4 classes of antimicrobials studied. Conclusions and Relevance In this study of outpatient S aureus isolates, MRSA became less common over the 10-year period, and MRSA isolates were increasingly resistant to tetracyclines and TMP-SMX. Geographic analysis indicated no spatial overlap in counties with high rates of resistance to both tetracyclines and TMP-SMX. Examining the regional spatial variation of antibiotic resistance can inform empirical therapy recommendations and help to understand the evolution of S aureus antibiotic resistance mechanisms.
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Affiliation(s)
- Margaret Carrel
- Department of Geographical and Sustainability Sciences, University of Iowa, Iowa City
| | - Matthew Smith
- Department of Internal Medicine, University of Iowa, Iowa City
- Center for Access & Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System, Iowa City, Iowa
| | - Qianyi Shi
- Department of Internal Medicine, University of Iowa, Iowa City
| | - Shinya Hasegawa
- Department of Internal Medicine, University of Iowa, Iowa City
- Center for Access & Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System, Iowa City, Iowa
| | - Gosia S Clore
- Department of Internal Medicine, University of Iowa, Iowa City
- Center for Access & Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System, Iowa City, Iowa
| | - Eli N Perencevich
- Department of Internal Medicine, University of Iowa, Iowa City
- Center for Access & Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System, Iowa City, Iowa
- Associate Editor, JAMA Network Open
| | - Michihiko Goto
- Department of Internal Medicine, University of Iowa, Iowa City
- Center for Access & Delivery Research and Evaluation, Iowa City Veterans Affairs Health Care System, Iowa City, Iowa
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Onyishi N. Invasive Community-Acquired Methicillin-Resistant Staphylococcus aureus With Aortic Aneurysm in a 10-Year-Old Patient: A Case Report. Cureus 2024; 16:e62712. [PMID: 39036215 PMCID: PMC11259233 DOI: 10.7759/cureus.62712] [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] [Accepted: 06/19/2024] [Indexed: 07/23/2024] Open
Abstract
The clinical presentation of disseminated community-acquired Methicillin-resistant Staphylococcus aureus (MRSA) in young pediatric patients without a known predisposing risk factor poses a diagnostic dilemma due to its non-specific clinical symptoms. This can lead to delayed initiation of appropriate antibiotics and surgical interventions to achieve a favorable outcome and prevent mortality. Appropriate imaging with good clinical judgment is required in the management of this infection. Outpatient surveillance for subacute and chronic complications is required for a good long-term prognosis. Few reported cases of disseminated infections with aortic aneurysm exist in the literature. We report a case of a child without predisposing risk factors managed for community-acquired MRSA sepsis, acute respiratory distress syndrome (ARDS), multiple abscesses, osteomyelitis, and necrotizing pneumonia with a post-discharge unruptured aortic aneurysm. This case emphasizes the importance of post-discharge monitoring even in patients with favorable outcomes.
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Affiliation(s)
- Ngozi Onyishi
- Pediatrics, Driscoll Children's Hospital, Corpus Christi, USA
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Yang L, Dharmaratne P, Zhu C, Sapugahawatte DN, Rahman N, Barua N, Li C, Kwok KO, Luo M, Liyanapathirana V, Ip M. Global epidemiology of asymptomatic colonisation of methicillin-resistant Staphylococcus aureus in the upper respiratory tract of young children: a systematic review and meta-analysis. Arch Dis Child 2024; 109:267-274. [PMID: 38296611 PMCID: PMC10958260 DOI: 10.1136/archdischild-2023-326124] [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: 07/22/2023] [Accepted: 01/07/2024] [Indexed: 03/21/2024]
Abstract
OBJECTIVE To estimate the global prevalence of asymptomatic colonisation, and determine the associated risk factors, antibiotic resistance and genotypes of methicillin-resistant Staphylococcus aureus (MRSA) in the upper respiratory tract of young children. DESIGN Four bibliometric databases were searched for publications between 2010 and 2022 according to the protocol registered in PROSPERO. Cross-sectional or cohort studies describing the prevalence of asymptomatic colonisation of S. aureus and MRSA in young children were included. Data extraction and analysis were carried out by two reviewers independently according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 statement. Pooled prevalence was estimated using a random effects model. SETTING AND STUDIES We included studies where children without respiratory tract infection or Staphylococcal infection were recruited from the community, children's institutions (ie, nurseries, kindergartens, daycare centres and preschools) and healthcare centre visits and assessed for asymptomatic colonisation with S. aureus and MRSA. MAIN OUTCOME MEASURES The pooled prevalence of asymptomatic colonisation of S. aureus and MRSA of young children globally. RESULTS In this systematic review and meta-analysis of 21 416 young children, the pooled global prevalence of asymptomatic S. aureus colonisation was 25.1% (95% CI 21.4 to 28.8) and MRSA colonisation was 3.4% (95% CI 2.8 to 4.1). The clones of MRSA strains included healthcare-associated MRSA, community-associated MRSA and livestock-associated MRSA. CONCLUSION This study provides evidence of increased MRSA colonisation globally among young children, underlining the critical role of asymptomatic carriers in MRSA transmission and the need for control measures. PROSPERO REGISTRATION NUMBER CRD 42022328385.
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Affiliation(s)
- Liuyue Yang
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Priyanga Dharmaratne
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Chendi Zhu
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | | | - Nannur Rahman
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- Department of Food Technology and Nutritional Science, Mawlana Bhashani Science and Technology University, Tangail, Bangladesh
| | - Nilakshi Barua
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Carmen Li
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Kin On Kwok
- JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Mingjing Luo
- Center for Synthetic Microbiome, Shenzhen Institute of Synthetic Biology, CAS, Shenzhen, China
| | | | - Margaret Ip
- Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
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Liu H, Xu T, Xue Z, Huang M, Wang T, Zhang M, Yang R, Guo Y. Current Development of Thiazole-Containing Compounds as Potential Antibacterials against Methicillin-Resistant Staphylococcus aureus. ACS Infect Dis 2024; 10:350-370. [PMID: 38232301 DOI: 10.1021/acsinfecdis.3c00647] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The emergence of multi-drug-resistant bacteria is threatening to human health and life around the world. In particular, methicillin-resistant Staphylococcus aureus (MRSA) causes fatal injuries to human beings and serious economic losses to animal husbandry due to its easy transmission and difficult treatment. Currently, the development of novel, highly effective, and low-toxicity antimicrobials is important to combat MRSA infections. Thiazole-containing compounds with good biological activity are widely used in clinical practice, and appropriate structural modifications make it possible to develop new antimicrobials. Here, we review thiazole-containing compounds and their antibacterial effects against MRSA reported in the past two decades and discuss their structure-activity relationships as well as the corresponding antimicrobial mechanisms. Some thiazole-containing compounds exhibit potent antibacterial efficacy in vitro and in vivo after appropriate structural modifications and could be used as antibacterial candidates. This Review provides insights into the development of thiazole-containing compounds as antimicrobials to combat MRSA infections.
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Affiliation(s)
- Hang Liu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Ting Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
| | - Zihan Xue
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Meijuan Huang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Tingting Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Miaomiao Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Ruige Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Yong Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, Henan Province, China
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Crawford L, Pertsovskaya V, Shanklin A, Zhang A, Hamdy RF. Predictive Value of Methicillin-Resistant Staphylococcus aureus Nasal Swab PCR Assay for MRSA Infection in Critically Ill Pediatric Patients. J Pediatric Infect Dis Soc 2024; 13:84-90. [PMID: 38070165 DOI: 10.1093/jpids/piad111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/07/2023] [Indexed: 01/30/2024]
Abstract
BACKGROUND Critically ill pediatric patients are frequently initiated methicillin-resistant Staphylococcus aureus (MRSA) active antibiotics during infection evaluation even though MRSA infections are rare in many patient populations. The MRSA nasal swab polymerase chain reaction assay (MRSA-NS-PCR) is a test that has been shown to have a high negative predictive value (NPV) for MRSA infection in adults. This study evaluated the diagnostic test characteristics of the MRSA-NS-PCR in predicting the presence of MRSA infection in critically ill pediatric patients. STUDY DESIGN A retrospective cohort study was performed in a 44-bed pediatric intensive care unit (PICU) between 2013 and 2017. 3860 pediatric patients (54% male, median age 4 years [IQR 1-11 years]) admitted to the PICU who met pediatric systemic inflammatory response syndrome (pSIRS) criteria, were screened with a MRSA-NS-PCR, and had cultures obtained within seven days of MRSA-NS-PCR collection were included. Predictive values and post-test probabilities of the MRSA-NS-PCR for MRSA infection were calculated. RESULTS MRSA-NS-PCR was positive in 8.6% of patients. MRSA infection was identified in 40 patients, equaling an incidence rate of 2 per 1000 patient days. The MRSA-NS-PCR demonstrated a positive predictive value (PPV) of 9.7%, a NPV of 99.8%, and a post-test probability for a negative test of 0.2% for MRSA infection. CONCLUSIONS The MRSA-NS-PCR has a poor PPV but a high NPV for MRSA infection in PICU patients when the incidence of MRSA infection is low. Creation of protocols to guide antimicrobial selection based on MRSA-NS-PCR results may lead to improved antimicrobial stewardship and significant risk reduction.
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Affiliation(s)
- Lexi Crawford
- Division of Critical Care Medicine, Children's National Hospital, Washington, District of Columbia, USA
| | - Vera Pertsovskaya
- The George Washington University School of Medicine and Health Sciences, Department of Pediatrics, The George Washington University, Washington, District of Columbia, USA
| | - Alice Shanklin
- Division of Critical Care Medicine, Children's National Hospital, Washington, District of Columbia, USA
| | - Anqing Zhang
- The George Washington University School of Medicine and Health Sciences, Department of Pediatrics, The George Washington University, Washington, District of Columbia, USA
- Division of Biostatistics and Study Methodology, Children's National Hospital, Washington, District of Columbia, USA
| | - Rana F Hamdy
- The George Washington University School of Medicine and Health Sciences, Department of Pediatrics, The George Washington University, Washington, District of Columbia, USA
- Division of Infectious Diseases, Children's National Hospital, Washington, District of Columbia, USA
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Sun C, Tan D, Yu J, Liu J, Shen D, Li S, Zhao S, Zhang L, Li H, Cai K, Xu S, Huang L. Predictive models for sepsis in children with Staphylococcus aureus bloodstream infections: a retrospective cohort study. BMC Pediatr 2023; 23:496. [PMID: 37784062 PMCID: PMC10544563 DOI: 10.1186/s12887-023-04317-2] [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: 10/06/2022] [Accepted: 09/16/2023] [Indexed: 10/04/2023] Open
Abstract
BACKGROUND The presence of Staphylococcus aureus in the bloodstream can lead to the development of sepsis; however, the severity and risk factors of the systemic inflammatory response to Staphylococcus aureus bloodstream infections were unclear. This study is aimed to build a model to predict the risk of sepsis in children with Staphylococcus aureus bloodstream infections. METHODS A retrospective analysis of hospitalized pediatric patients diagnosed with Staphylococcus aureus bloodstream infections was performed between January 2013 and December 2019. Each patient was assessed using the pediatric version of the Sequential Organ Failure Assessment score (pSOFA) within 24 h of blood culture collection. A nomogram based on logistic regression models was constructed to predict the risk factors for sepsis in children with Staphylococcus aureus bloodstream infections. It was validated using the area under the receiver-operating characteristic curve (AUC). RESULTS Of the 94 patients included in the study, 35 cases (37.2%) developed sepsis. The pSOFA scores ranged from 0 to 8, with 35 patients having a pSOFA score of ≥ 2. Six children (6.4%) died within 30 days, who were all from the sepsis group and had different pSOFA scores. The most common organs involved in sepsis in children with staphylococcal bloodstream infections were the neurologic system (68.6%), respiratory system (48.6%), and coagulation system (45.7%). Hospital-acquired infections (adjusted odds ratio [aOR], 3.0; 95% confidence interval [CI], 1.3-7.2), implanted catheters (aOR, 10.4; 95% CI, 3.8-28.4), procalcitonin level ≥ 1.7 ng/mL (aOR, 15.4; 95% CI, 2.7-87.1), and underlying diseases, especially gastrointestinal malformations (aOR, 14.0; 95% CI, 2.9-66.7) were associated with Staphylococcus aureus sepsis. However, methicillin-resistant Staphylococcus aureus infection was not a risk factor for sepsis. The nomogram had high predictive accuracy for the estimation of sepsis risk, with an AUC of 0.85. CONCLUSIONS We developed a predictive model for sepsis in children with Staphylococcus aureus infection.
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Affiliation(s)
- Chen Sun
- Department of Infectious Disease, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, 310052, China
- Department of Infectious Disease, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Dongdong Tan
- Department of Pediatrics, Liuzhou Maternity and Child Healthcare Hospital, Liuzhou, Guangxi, China
| | - Jiajia Yu
- Department of Clinical Laboratory, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingxian Liu
- Department of Clinical Laboratory, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dihua Shen
- Department of Pediatric Surgery, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuang Li
- Department of Infectious Disease, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Shiyong Zhao
- Department of Infectious Diseases, Hangzhou Children's Hospital, Hangzhou, China
| | - Liya Zhang
- Department of Infectious Disease, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Huajun Li
- Department of Infectious Disease, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Kang Cai
- Department of Infectious Disease, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Shanshan Xu
- Department of Infectious Disease, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China.
| | - Lisu Huang
- Department of Infectious Disease, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, 310052, China.
- Department of Infectious Disease, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China.
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Whittington KJ, Malone SM, Hogan PG, Ahmed F, Flowers J, Milburn G, Morelli JJ, Newland JG, Fritz SA. Staphylococcus aureus Bacteremia in Pediatric Patients: Uncovering a Rural Health Challenge. Open Forum Infect Dis 2023; 10:ofad296. [PMID: 37469617 PMCID: PMC10352649 DOI: 10.1093/ofid/ofad296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/30/2023] [Indexed: 07/21/2023] Open
Abstract
Background Staphylococcus aureus bacteremia poses significant risk for morbidity and mortality. This may be exacerbated in rural populations facing unique health challenges. Methods To investigate factors influencing S. aureus bacteremia outcomes, we conducted a retrospective cohort study of children admitted to St. Louis Children's Hospital (SLCH) from 2011 to 2019. Exposures included rurality (defined by the Rural-Urban Continuum Code), Area Deprivation Index, and outside hospital (OSH) admission before SLCH admission. The primary outcome was treatment failure, a composite of 90-day all-cause mortality and hospital readmission. Results Of 251 patients, 69 (27%) were from rural areas; 28 (11%) were initially admitted to an OSH. Treatment failure occurred in 39 (16%) patients. Patients from rural areas were more likely to be infected with methicillin-resistant S. aureus (45%) vs urban children (29%; P = .02). Children initially admitted to an OSH, vs those presenting directly to SLCH, were more likely to require intensive care unit-level (ICU) care (57% vs 29%; P = .002), have an endovascular source of infection (32% vs 12%; P = .004), have a longer duration of illness before hospital presentation (4.1 vs 3.0 days; P = .04), and have delayed initiation of targeted antibiotic therapy (3.9 vs 2.6 days; P = .01). Multivariable analysis revealed rural residence (adjusted odds ratio [aOR], 2.3; 95% CI, 1.1-5.0), comorbidities (aOR, 2.9; 95% CI, 1.3-6.2), and ICU admission (aOR, 3.9; 95% CI, 1.9-8.3) as predictors of treatment failure. Conclusions Children from rural areas face barriers to specialized health care. These challenges may contribute to severe illness and worse outcomes among children with S. aureus bacteremia.
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Affiliation(s)
- Kyle J Whittington
- Correspondence: Stephanie A. Fritz, MD, MSCI, 660 S. Euclid Avenue, MSC 8116-43-10, St Louis, MO 63110-9872 (); or Kyle Whittington, MD, 660 S. Euclid Avenue, MSC 8116-43-10, St Louis, MO 63110-9872 ()
| | - Sara M Malone
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Surgery, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Patrick G Hogan
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Faria Ahmed
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - JessieAnn Flowers
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Grace Milburn
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - John J Morelli
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Jason G Newland
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Stephanie A Fritz
- Correspondence: Stephanie A. Fritz, MD, MSCI, 660 S. Euclid Avenue, MSC 8116-43-10, St Louis, MO 63110-9872 (); or Kyle Whittington, MD, 660 S. Euclid Avenue, MSC 8116-43-10, St Louis, MO 63110-9872 ()
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Alidrisi DA, Alharthi W, Alfawaz T. Invasive Community-Acquired Methicillin-Resistant Staphylococcus aureus (MRSA) Infection in Children: A Report of Five Cases and Literature Review. Cureus 2023; 15:e37974. [PMID: 37223206 PMCID: PMC10202042 DOI: 10.7759/cureus.37974] [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] [Accepted: 04/19/2023] [Indexed: 05/25/2023] Open
Abstract
Staphylococcus aureus developed resistance against most antibiotics; the most known resistant form is methicillin-resistant Staphylococcus aureus (MRSA), which can be acquired either from healthcare facilities or the community. The prevalence of hospital-acquired MRSA is higher than community-acquired MRSA (CA-MRSA). CA-MRSA has become an emerging infection and has been increasingly reported recently. Usually, CA-MRSA presents with skin and soft tissue infection but can cause severe invasive infection with significant morbidity. Invasive CA-MRSA needs rapid and aggressive treatment to prevent complications. For MRSA bacteremia that is persistent despite appropriate treatment, the possibility of metastatic invasive infection should be thought of. In this case series, we describe five pediatric cases of different age groups that had different presentations for invasive CA-MRSA infection. This report aims to highlight that physicians should be aware of the growing role of CA-MRSA in pediatrics; they should be meticulous in treating patients with CA-MRSA, and be aware of the complications of this disease and the appropriate empiric and target antibiotics regimen for such infections.
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Affiliation(s)
- Dhuha A Alidrisi
- Pediatric Infectious Diseases, Security Forces Hospital Makkah, Makkah, SAU
| | - Waad Alharthi
- Pediatric Infectious Diseases, King Fahad Specialist Hospital, Dammam, SAU
| | - Tariq Alfawaz
- Pediatric Infectious Diseases, King Fahad Medical City, Riyadh, SAU
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Whittington KJ, Ma Y, Butler AM, Hogan PG, Ahmed F, Flowers J, Milburn G, Morelli JJ, Newland JG, Fritz SA. The impact of infectious diseases consultation for children with Staphylococcus aureus bacteremia. Pediatr Res 2022; 92:1598-1605. [PMID: 35982140 PMCID: PMC9789160 DOI: 10.1038/s41390-022-02251-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/14/2022] [Accepted: 07/27/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Despite clear benefit of improved outcomes in adults, the impact of infectious diseases (ID) consultation for Staphylococcus aureus bacteremia in children remains understudied. METHODS To assess the impact of pediatric ID consultation on management and outcomes, we conducted a cohort study of children with S. aureus bacteremia at St. Louis Children's Hospital from 2011 to 2018. We assessed adherence to six established quality-of-care indicators (QCIs). We applied propensity score methodology to examine the impact of ID consultation on risk of treatment failure, a composite of all-cause mortality or hospital readmission within 90 days. RESULTS Of 306 patients with S. aureus bacteremia, 193 (63%) received ID consultation. ID consultation was associated with increased adherence to all QCIs, including proof-of-cure blood cultures, indicated laboratory studies, echocardiography, source control, targeted antibiotic therapy, and antibiotic duration. Obtaining proof-of-cure blood cultures and all indicated laboratory studies were associated with improved outcomes. In propensity score-weighted analyses, risk of treatment failure was similar among patients who did and did not receive ID consultation. However, the number of events was small and risk estimates were imprecise. CONCLUSIONS For children with S. aureus bacteremia, ID consultation improved adherence to QCIs, some of which were associated with improved clinical outcomes. IMPACT In children with Staphylococcus aureus bacteremia, consultation by an infectious diseases (ID) physician improved adherence to established quality-of-care indicators (QCIs). The current literature regarding ID consultation in pediatric S. aureus bacteremia is sparse. Three prior international studies demonstrated improved quality of care with ID consultation, though results were disparate regarding clinical outcomes. This article impacts the current literature by strengthening the evidence that ID consultation in children improves adherence to QCIs, and demonstrates that adherence to QCIs improves clinical outcomes.
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Affiliation(s)
- Kyle J. Whittington
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Yinjiao Ma
- Department of Medicine Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Anne M. Butler
- Department of Medicine Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Patrick G. Hogan
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Faria Ahmed
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - JessieAnn Flowers
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Grace Milburn
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - John J. Morelli
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Jason G. Newland
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Stephanie A. Fritz
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, 63110, USA,Corresponding author: Stephanie A. Fritz, MD, MSCI, 660 S. Euclid Avenue, MSC 8116-43-10, St. Louis, MO 63110-9872, , Phone: (314) 454-6050
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Ma M, Tao L, Li X, Liang Y, Li J, Wang H, Jiang H, Dong J, Han D, Du T. Changes in molecular characteristics and antimicrobial resistance of invasive Staphylococcus aureus infection strains isolated from children in Kunming, China during the COVID-19 epidemic. Front Microbiol 2022; 13:944078. [PMID: 36033878 PMCID: PMC9403864 DOI: 10.3389/fmicb.2022.944078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 07/27/2022] [Indexed: 11/23/2022] Open
Abstract
Invasive Staphylococcus aureus (S. aureus) infection is associated with high rates of mortality in children. No studies have been reported on invasive S. aureus infection among children in Kunming, China, and it remains unknown whether the COVID-19 epidemic has affected S. aureus prevalence in this region. Thus, this study investigated the changes in molecular characteristics and antimicrobial resistance of invasive S. aureus strains isolated from children in Kunming during 2019–2021. In total, 66 invasive S. aureus strains isolated from children were typed by multilocus sequence typing (MLST), spa, and Staphylococcal cassette chromosome mec (SCCmec), and antimicrobial resistance and virulence genes were analyzed. A total of 19 ST types, 31 spa types and 3 SCCmec types were identified. Thirty nine (59.09%) strains were methicillin-sensitive S. aureus (MSSA) and 27 (40.91%) strains were methicillin-resistant S. aureus (MRSA). The most common molecular type was ST22-t309 (22.73%, 15/66), followed by ST59-t437 (13.64%, 9/66). In 2019 and 2021, the dominant molecular type was ST22-t309, while in 2020, it was ST59-t437. After 2019, the dominant molecular type of MRSA changed from ST338-t437 to ST59-t437. All strains were susceptible to tigecycline, ciprofloxacin, moxifloxacin, vancomycin, quinopudine-dafoputin, linezolid, levofloxacin, and rifampicin. From 2019 to 2021, the resistance to penicillin and sulfamethoxazole initially decreased and then increased, a trend that contrasted with the observed resistance to oxacillin, cefoxitin, erythromycin, clindamycin, and tetracycline. Sixteen antimicrobial resistance profiles were identified, with penicillin-tetracycline-erythromycin-clindamycin-oxacillin-cefoxitin being the most common, and the antimicrobial resistance profiles varied by year. The carrier rates of virulence genes, icaA, icaD, hla, fnbA, fnbB, clfA, clfB, and cna were 100.00%. Furthermore, sak, pvl, icaC, icaR, fib, lip, hlb, hysA, sea, seb, and tsst-1 had carrier rates of 96.97, 92.42, 87.88, 69.70, 84.85, 62.12, 56.06, 50, 37.87, 30.30, and 7.58%, respectively. Since COVID-19 epidemic, the annual number of invasive S. aureus strains isolated from children in Kunming remained stable, but the molecular characteristics and antimicrobial resistance profiles of prevalent S. aureus strains have changed significantly. Thus, COVID-19 prevention and control should be supplemented by surveillance of common clinical pathogens, particularly vigilance against the prevalence of multidrug-resistant and high-virulence strains.
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Affiliation(s)
- Mingbiao Ma
- Department of Clinical Laboratory, Kunming Children’s Hospital, Kunming, China
- Yunnan Key Laboratory of Children’s Major Disease Research, Kunming Children’s Hospital, Kunming, China
- Yunnan Province Clinical Research Center for Children’s Health and Disease, Kunming Children’s Hospital, Kunming, China
| | - Lvyan Tao
- Yunnan Key Laboratory of Children’s Major Disease Research, Kunming Children’s Hospital, Kunming, China
- Yunnan Province Clinical Research Center for Children’s Health and Disease, Kunming Children’s Hospital, Kunming, China
- Yunnan Institute of Pediatrics, Kunming Children’s Hospital, Kunming, China
| | - Xinyue Li
- Department of Clinical Laboratory, Kunming Children’s Hospital, Kunming, China
| | - Yanqi Liang
- Department of Laboratory, Chuxiong Higher College of Medicine, Chuxiong, China
| | - Jue Li
- Department of Clinical Laboratory, Kunming Children’s Hospital, Kunming, China
| | - Haiping Wang
- Department of Clinical Laboratory, Kunming Children’s Hospital, Kunming, China
| | - Hongchao Jiang
- Yunnan Key Laboratory of Children’s Major Disease Research, Kunming Children’s Hospital, Kunming, China
- Yunnan Province Clinical Research Center for Children’s Health and Disease, Kunming Children’s Hospital, Kunming, China
- Yunnan Institute of Pediatrics, Kunming Children’s Hospital, Kunming, China
| | - Jing Dong
- Department of Clinical Laboratory, Kunming Children’s Hospital, Kunming, China
| | - Dingrui Han
- Department of Clinical Laboratory, Kunming Children’s Hospital, Kunming, China
| | - Tingyi Du
- Department of Clinical Laboratory, Kunming Children’s Hospital, Kunming, China
- Yunnan Key Laboratory of Children’s Major Disease Research, Kunming Children’s Hospital, Kunming, China
- Yunnan Province Clinical Research Center for Children’s Health and Disease, Kunming Children’s Hospital, Kunming, China
- *Correspondence: Tingyi Du,
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11
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Role of Daptomycin in Cutaneous Wound Healing: A Narrative Review. Antibiotics (Basel) 2022; 11:antibiotics11070944. [PMID: 35884198 PMCID: PMC9311791 DOI: 10.3390/antibiotics11070944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/11/2022] [Accepted: 07/11/2022] [Indexed: 02/06/2023] Open
Abstract
Daptomycin is active against Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and the on-label indications for its use include complicated skin and skin structure infections (cSSSI). We performed a narrative review of the literature with the aim to evaluate the role of daptomycin in the skin wound healing process, proposing our point of view on the possible association with other molecules that could improve the skin healing process. Daptomycin may improve wound healing in MRSA-infected burns, surgical wounds, and diabetic feet, but further studies in humans with histological examination are needed. In the future, the combination of daptomycin with other molecules with synergistic action, such as vitamin E and derivates, IB-367, RNA III-inhibiting peptide (RIP), and palladium nanoflowers, may help to improve wound healing and overcome forms of antibiotic resistance.
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12
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Morgan BL, Stern MC, Pérez-Stable EJ, Hooper MW, Fejerman L. Adding a One Health approach to a research framework for minority health and health disparities. eLife 2022; 11:76461. [PMID: 35796544 PMCID: PMC9262385 DOI: 10.7554/elife.76461] [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: 12/17/2021] [Accepted: 06/28/2022] [Indexed: 11/24/2022] Open
Abstract
The National Institute on Minority Health and Health Disparities (NIMHD) has developed a framework to guide and orient research into health disparities and minority health. The framework depicts different domains of influence (such as biological and behavioral) and different levels of influence (such as individual and interpersonal). Here, influenced by the “One Health” approach, we propose adding two new levels of influence – interspecies and planetary – to this framework to reflect the interconnected nature of human, animal, and environmental health. Extending the framework in this way will help researchers to create new avenues of inquiry and encourage multidisciplinary collaborations. We then use the One Health approach to discuss how the COVID-19 pandemic has exacerbated health disparities, and show how the expanded framework can be applied to research into health disparities related to antimicrobial resistance and obesity.
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Affiliation(s)
- Brittany L Morgan
- Department of Public Health Sciences, University of California, Davis, Davis, United States.,Center for Animal Disease Modeling and Surveillance (CADMS), Department of Veterinary Medicine, University of California, Davis, Davis, United States
| | - Mariana C Stern
- Departments of Preventive Medicine and Urology, Keck School of Medicine of USC, Los Angeles, United States.,Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, United States
| | - Eliseo J Pérez-Stable
- Office of the Director, National Institute on Minority Health and Health Disparities, National Institutes of Health, Bethesda, United States
| | - Monica Webb Hooper
- Office of the Director, National Institute on Minority Health and Health Disparities, National Institutes of Health, Bethesda, United States
| | - Laura Fejerman
- Department of Public Health Sciences, University of California, Davis, Davis, United States.,Comprehensive Cancer Center, University of California, Davis, Davis, United States
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13
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Kalu IC, Kao CM, Fritz SA. Management and Prevention of Staphylococcus aureus Infections in Children. Infect Dis Clin North Am 2022; 36:73-100. [PMID: 35168715 PMCID: PMC9901217 DOI: 10.1016/j.idc.2021.11.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Staphylococcus aureus is a common skin commensal with the potential to cause severe infections resulting in significant morbidity and mortality. Up to 30% of individuals are colonized with S aureus, though infection typically does not occur without skin barrier disruption. Infection management includes promptly addressing the source of infection, including sites of metastatic infection, and initiation of effective antibiotics, which should be selected based on local antibiotic susceptibility patterns. Given that S aureus colonization is a risk factor for infection, preventive strategies are aimed at optimizing hygiene measures and decolonization regimens for outpatients and critically ill children with prolonged hospitalizations.
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Affiliation(s)
| | | | - Stephanie A. Fritz
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri, USA
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14
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Abd El-Ghany WA. Staphylococcus aureus in poultry, with special emphasis on methicillin-resistant strain infection: A comprehensive review from one health perspective. INTERNATIONAL JOURNAL OF ONE HEALTH 2021. [DOI: 10.14202/ijoh.2021.257-267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Staphylococcus aureus is a Gram-positive coccus normally present on the skin and internal organs of animals, birds, and humans. Under certain conditions, S. aureus could produce septicemia and affection of the skin, joints, and heart, as well as sepsis and death. The pathogenicity of S. aureus is associated with the presence of some virulent surface proteins and the production of some virulent toxins and enzymes. This pathogen is considered one of the most important and worldwide foodborne causes as it is incriminated in most cases of food poisoning. The hazardous use of antibiotics in the veterinary field leads to the development of multidrug-resistant S. aureus strains that can be transmitted to humans. The incidence of methicillin-resistant S. aureus (MRSA) strains has increased globally. These resistant strains have been detected in live animals, poultry, and humans. In addition, retail animal products, especially those of avian origin, are considered the main source of MRSA strains that can be easily transmitted to humans. MRSA infection is regarded as nosocomial or occupational. Humans get infected with MRSA strains through improper handling or preparation of contaminated animals or poultry carcasses or improper cooking with contaminated meat. Live birds also can transmit MRSA to close-contact workers in poultry farms. Transmission of MRSA infection in hospitals is from an infected individual to a healthy one. Prevention and control of MRSA are based on the application of hygienic measures in farms as well as proper processing, handling, and cooking of retail poultry products. The cooperation between veterinary and human practitioners is a must to avoid the possibility of zoonotic transmission. Accordingly, this review focused on the sources and transmission of MRSA infection, virulence and resistance factors, incidence and prevalence in poultry and different products, antibiotic resistance, and prevention and control strategies.
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Affiliation(s)
- Wafaa A. Abd El-Ghany
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
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15
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Genomic Update of Phenotypic Prediction Rule for Methicillin-Resistant Staphylococcus aureus (MRSA) USA300 Discloses Jail Transmission Networks with Increased Resistance. Microbiol Spectr 2021; 9:e0037621. [PMID: 34287060 PMCID: PMC8552710 DOI: 10.1128/spectrum.00376-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a leading cause of health care-associated (HA) and community-associated (CA) infections. USA300 strains are historically CA-MRSA, while USA100 strains are HA-MRSA. Here, we update an antibiotic prediction rule to distinguish these two genotypes based on antibiotic resistance phenotype using whole-genome sequencing (WGS), a more discriminatory methodology than pulsed-field gel electrophoresis (PFGE). MRSA clinical isolates collected from 2007 to 2017 underwent WGS; associated epidemiologic data were ascertained. In developing the rule, we examined MRSA isolates that included a population with a history of incarceration. Performance characteristics of antibiotic susceptibility for predicting USA300 compared to USA100, as defined by WGS, were examined. Phylogenetic analysis was performed to examine resistant USA300 clades. We identified 275 isolates (221 USA300, 54 USA100). Combination susceptibility to clindamycin or levofloxacin performed the best overall (sensitivity 80.7%, specificity 75.9%) to identify USA300. The average number of antibiotic classes with resistance was higher for USA100 (3 versus 2, P < 0.001). Resistance to ≤2 classes was predictive for USA300 (area under the curve (AUC) 0.84, 95% confidence interval 0.78 to 0.90). Phylogenetic analysis identified a cluster of USA300 strains characterized by increased resistance among incarcerated individuals. Using a combination of clindamycin or levofloxacin susceptibility, or resistance to ≤2 antibiotic classes, was predictive of USA300 as defined by WGS. Increased resistance was observed among individuals with incarceration exposure, suggesting circulation of a more resistant USA300 clade among at-risk community networks. Our phenotypic prediction rule could be used as an epidemiologic tool to describe community and nosocomial shifts in USA300 MRSA and quickly identify emergence of lineages with increased resistance. IMPORTANCE Methicillin-resistant Staphylococcus aureus (MRSA) is an important cause of health care-associated (HA) and community-associated (CA) infections, but the epidemiology of these strains (USA100 and USA300, respectively) now overlaps in health care settings. Although sequencing technology has become more available, many health care facilities still lack the capabilities to perform these analyses. In this study, we update a simple prediction rule based on antibiotic resistance phenotype with integration of whole-genome sequencing (WGS) to predict strain type based on antibiotic resistance profiles that can be used in settings without access to molecular strain typing methods. This prediction rule has many potential epidemiologic applications, such as analysis of retrospective data sets, regional monitoring, and ongoing surveillance of CA-MRSA infection trends. We demonstrate application of this rule to identify an emerging USA300 strain with increased antibiotic resistance among incarcerated individuals that deviates from the rule.
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16
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Kusama Y, Ito K, Fukuda H, Matsunaga N, Ohmagari N. National database study of trends in bacteraemia aetiology among children and adults in Japan: a longitudinal observational study. BMJ Open 2021; 11:e043774. [PMID: 33785491 PMCID: PMC8011712 DOI: 10.1136/bmjopen-2020-043774] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES Domestic epidemiological studies are needed to ascertain the disease burden of bacteraemia in individual countries. This study aimed to evaluate the domestic trends in paediatric and adult bacteraemia in Japan. SETTING Laboratory-based surveillance was used to obtain data from 592 hospitals located throughout Japan. PARTICIPANTS The study was conducted using the results of 827 780 and 3 512 524 blood culture tests obtained from children and adults, respectively, between January 2010 and December 2016. OUTCOME MEASURES We analysed the temporal trends in specific bacterial species (Staphylococcus aureus, Streptococcus pneumoniae, Streptococcus pyogenes, Streptococcus agalactiae, Escherichia coli, Klebsiella pneumoniae, Salmonella enterica, Haemophilus influenzae, Listeria monocytogenes and Neisseria meningitidis) detected from the blood cultures of children and adults. For children aged ≤2 years, the data were analysed for each year of age. The proportions of bacteraemia-positive results among the patients were also evaluated. RESULTS The number of bacteraemia-positive samples over the study period was 47,125/827,855 (5.7%) in children and 959,765/3,513,885 (27.3%) in adults. S. pneumoniae was the most frequent cause of bacteraemia in children in 2010. However, after 2011, S. aureus bacteraemia was the most frequent, followed by S. pneumoniae and E. coli. E. coli bacteraemia showed significant increases in both children and adults. In children, S. pneumoniae and H. influenzae bacteraemia decreased from 2010 to 2013. However, S. pneumoniae bacteraemia case numbers stabilised from 2013, whereas H. influenzae bacteraemia cases continued to decrease until 2016. CONCLUSION The results suggest that the introduction of the 13-valent pneumococcal conjugate vaccine did not substantially affect disease occurrence. In contrast to the decreasing trends in H. influenzae and S. pneumoniae bacteraemia, S. aureus, E. coli and S. agalactiae bacteraemia showed increasing trends. These findings shed light on recent temporal trends in bacteraemia in both children and adults in Japan.
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Affiliation(s)
- Yoshiki Kusama
- AMR Clinical Reference Center, Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan
- Collaborative Chairs Emerging and Reemerging Infectious Diseases, National Center for Global Health and Medicine, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Kenta Ito
- Department of General Pediatrics, Aichi Children's Health and Medical Center, Obu, Aichi, Japan
| | - Haruhisa Fukuda
- Department of Health Care Administration and Management, Kyushu University Graduate School of Medical Sciences School of Medicine Department of Health Sciences, Hakata, Fukuoka, Japan
| | - Nobuaki Matsunaga
- AMR Clinical Reference Center, Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan
| | - Norio Ohmagari
- AMR Clinical Reference Center, Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan
- Collaborative Chairs Emerging and Reemerging Infectious Diseases, National Center for Global Health and Medicine, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
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17
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Avedissian SN, Rhodes NJ, Shaffer CL, Tran L, Bradley JS, Le J. Antimicrobial prescribing for treatment of serious infections caused by Staphylococcus aureus and methicillin-resistant Staphylococcus aureus in pediatrics: an expert review. Expert Rev Anti Infect Ther 2021; 19:1107-1116. [PMID: 33554692 DOI: 10.1080/14787210.2021.1886923] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Introduction: Staphylococcus aureus, including methicillin-resistant S. aureus (MRSA), remains a significant pathogen in children. Despite evidence of decreasing prevalence, MRSA bacteremia has been closely associated with complications, including certain infections (i.e. musculoskeletal and endovascular) linked to increased treatment failures.Areas covered: This expert review summarized recent published literature on the role of treatment, dosing and administration of antibiotics used to combat serious S. aureus infections in children. The pertinent antibiotics presented were vancomycin, oxazolidinones, semi-synthetic glycopeptides, daptomycin, tigecycline, novel cephalosporins, fosfomycin and lefamulin. Vancomycin has been the most commonly used antibiotic in empiric therapy for serious MRSA infection, with new key recommendations emphasizing a different approach to dosing and therapeutic monitoring. For other antibiotics, data remain limited or clinical trials are underway.Expert opinion: MRSA remains a significant pathogen in the pediatric population. As numerous therapeutic agents are available, many agents have limited data on usage in pediatric patients. Future studies require pharmacokinetic, safety and efficacy studies in pediatric patients to ensure appropriate therapeutic treatment and outcomes. Phage therapy has been used to treat deep-seated MRSA infections and is an emerging investigational treatment option.
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Affiliation(s)
- Sean N Avedissian
- Antiviral Pharmacology Laboratory, University of Nebraska Medical Center (UNMC) Center for Drug Discovery, UNMC, Omaha, NE, USA.,University of Nebraska Medical Center, College of Pharmacy, Omaha, NE, USA
| | - Nathanial J Rhodes
- Midwestern University College of Pharmacy, Downers Grove Campus, Downers Grove, IL, USA.,Midwestern University College of Pharmacy, Downers Grove Campus, Pharmacometrics Center of Excellence, Downers Grove, IL USA
| | | | - Lan Tran
- Division of Clinical Pharmacy, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, USA
| | - John S Bradley
- Division of Infectious Diseases, Department of Pediatrics, University of California San Diego School of Medicine and Rady Children's Hospital San Diego
| | - Jennifer Le
- Division of Clinical Pharmacy, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, USA
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18
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Jackson KA, Gokhale RH, Nadle J, Ray SM, Dumyati G, Schaffner W, Ham DC, Magill SS, Lynfield R, See I. Public Health Importance of Invasive Methicillin-sensitive Staphylococcus aureus Infections: Surveillance in 8 US Counties, 2016. Clin Infect Dis 2021; 70:1021-1028. [PMID: 31245810 DOI: 10.1093/cid/ciz323] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/15/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Public health and infection control prevention and surveillance efforts in the United States have primarily focused on methicillin-resistant Staphylococcus aureus (MRSA). We describe the public health importance of methicillin-susceptible S. aureus (MSSA) in selected communities. METHODS We analyzed Emerging Infections Program surveillance data for invasive S. aureus (SA) infections (isolated from a normally sterile body site) in 8 counties in 5 states during 2016. Cases were considered healthcare-associated if culture was obtained >3 days after hospital admission; if associated with dialysis, hospitalization, surgery, or long-term care facility (LTCF) residence within 1 year prior; or if a central venous catheter was present ≤2 days prior. Incidence per 100 000 census population was calculated, and a multivariate logistic regression model with random intercepts was used to compare MSSA risk factors with those of MRSA. RESULTS Invasive MSSA incidence (31.3/100 000) was 1.8 times higher than MRSA (17.5/100 000). Persons with MSSA were more likely than those with MRSA to have no underlying medical conditions (adjusted odds ratio [aOR], 2.06; 95% confidence interval [CI], 1.26-3.39) and less likely to have prior hospitalization (aOR, 0.70; 95% CI, 0.60-0.82) or LTCF residence (aOR, 0.37; 95% CI, 0.29-0.47). MSSA accounted for 59.7% of healthcare-associated cases and 60.1% of deaths. CONCLUSIONS Although MRSA tended to be more closely associated with healthcare exposures, invasive MSSA is a substantial public health problem in the areas studied. Public health and infection control prevention efforts should consider MSSA prevention in addition to MRSA.
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Affiliation(s)
- Kelly A Jackson
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Runa H Gokhale
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Susan M Ray
- Georgia Emerging Infections Program and the Atlanta Veterans Affairs Medical Center, Decatur
| | | | | | - David C Ham
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Shelley S Magill
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Isaac See
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
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19
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Sahukhal GS, Tucci M, Benghuzzi H, Wilson G, Elasri MO. The role of the msaABCR operon in implant-associated chronic osteomyelitis in Staphylococcus aureus USA300 LAC. BMC Microbiol 2020; 20:324. [PMID: 33109085 PMCID: PMC7590495 DOI: 10.1186/s12866-020-01964-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 09/02/2020] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND The msaABCR operon regulates several staphylococcal phenotypes such as biofilm formation, capsule production, protease production, pigmentation, antibiotic resistance, and persister cells formation. The msaABCR operon is required for maintaining the cell wall integrity via affecting peptidoglycan cross-linking. The msaABCR operon also plays a role in oxidative stress defense mechanism, which is required to facilitate persistent and recurrent staphylococcal infections. Staphylococcus aureus is the most frequent cause of chronic implant-associated osteomyelitis (OM). The CA-MRSA USA300 strains are predominant in the United States and cause severe infections, including bone and joint infections. RESULTS The USA300 LAC strain caused significant bone damage, as evidenced by the presence of severe bone necrosis with multiple foci of sequestra and large numbers of multinucleated osteoclasts. Intraosseous survival and biofilm formation on the K-wires by USA300 LAC strains was pronounced. However, the msaABCR deletion mutant was attenuated. We observed minimal bone necrosis, with no evidence of intramedullary abscess and/or fibrosis, along reduced intraosseous bacterial population and significantly less biofilm formation on the K-wires by the msaABCR mutant. microCT analysis of infected bone showed significant bone loss and damage in the USA300 LAC and complemented strain, whereas the msaABCR mutant's effect was reduced. In addition, we observed increased osteoblasts response and new bone formation around the K-wires in the bone infected by the msaABCR mutant. Whole-cell proteomics analysis of msaABCR mutant cells showed significant downregulation of proteins, cell adhesion factors, and virulence factors that interact with osteoblasts and are associated with chronic OM caused by S. aureus. CONCLUSION This study showed that deletion of msaABCR operon in USA300 LAC strain lead to defective biofilm in K-wire implants, decreased intraosseous survival, and reduced cortical bone destruction. Thus, msaABCR plays a role in implant-associated chronic osteomyelitis by regulating extracellular proteases, cell adhesions factors and virulence factors. However additional studies are required to further define the contribution of msaABCR-regulated molecules in osteomyelitis pathogenesis.
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Affiliation(s)
- Gyan S Sahukhal
- Present Address: Center for Molecular and Cellular Biosciences, The University of Southern Mississippi, 118 College Drive # 5018, Hattiesburg, MS, 39406, USA.
| | - Michelle Tucci
- Department of Orthopaedics, University of Mississippi Medical Center, Jackson, MS, USA
| | - Hamed Benghuzzi
- Department of Orthopaedics, University of Mississippi Medical Center, Jackson, MS, USA
| | - Gerri Wilson
- Department of Orthopaedics, University of Mississippi Medical Center, Jackson, MS, USA
| | - Mohamed O Elasri
- Present Address: Center for Molecular and Cellular Biosciences, The University of Southern Mississippi, 118 College Drive # 5018, Hattiesburg, MS, 39406, USA
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20
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Grossman AB, Rice KC, Vermerris W. Lignin solvated in zwitterionic Good's buffers displays antibacterial synergy against
Staphylococcus aureus
. J Appl Polym Sci 2020. [DOI: 10.1002/app.49107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Adam B. Grossman
- Department of Microbiology & Cell Science IFAS, University of Florida Gainesville Florida, USA
| | - Kelly C. Rice
- Department of Microbiology & Cell Science IFAS, University of Florida Gainesville Florida, USA
| | - Wilfred Vermerris
- Department of Microbiology & Cell Science IFAS, University of Florida Gainesville Florida, USA
- UF Genetics Institute, University of Florida Gainesville Florida
- Florida Center for Renewable Chemicals and Fuels University of Florida Gainesville Florida
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21
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Crandall H, Kapusta A, Killpack J, Heyrend C, Nilsson K, Dickey M, Daly JA, Ampofo K, Pavia AT, Mulvey MA, Yandell M, Hulten KG, Blaschke AJ. Clinical and molecular epidemiology of invasive Staphylococcus aureus infection in Utah children; continued dominance of MSSA over MRSA. PLoS One 2020; 15:e0238991. [PMID: 32946486 PMCID: PMC7500648 DOI: 10.1371/journal.pone.0238991] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 08/27/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Invasive Staphylococcus aureus infections are a common cause of morbidity and mortality in children. In the early 2000's the proportion of infections due the methicillin-resistant S. aureus (MRSA) increased rapidly. We described the clinical and molecular epidemiology of invasive S. aureus disease in a pediatric population. METHODS We prospectively identified children in Utah with invasive S. aureus infections. Medical records were reviewed to determine diagnosis and clinical characteristics. Isolates were genotyped using multi-locus sequence typing. The presence of genes encoding the Panton-Valentine leukocidin (PVL) was determined using polymerase chain reaction. RESULTS Over a 4-year period between January 2009 and December 2012, we identified 357 children, hospitalized at Primary Children's Hospital, with invasive S. aureus infections and isolates available for the study. Methicillin-susceptible S. aureus (MSSA) caused 79% of disease, while MRSA caused only 21% of disease. Mortality associated with invasive S. aureus infection was 3.6%. The most common diagnoses were osteoarticular infections (38%) followed by central line associated blood stream infections (19%) and pneumonia (12%). We identified 41 multi-locus sequence types. The majority of isolates belonged to 6 predominant clonal complexes (CC5, CC8, CC15, CC30, CC45, CC59). PVL was present in a minority (16%) of isolates, of which most were ST8 MRSA. CONCLUSIONS MSSA was the primary cause of invasive S. aureus infections at our institution throughout the study period. A limited number of predominant strains accounted for the majority of invasive disease. The classic virulence factor PVL was uncommon in MSSA isolates. Further study is needed to improve our understanding of S. aureus virulence and disease pathogenesis.
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Affiliation(s)
- Hillary Crandall
- Division of Pediatric Critical Care, Department of Pediatrics, University of Utah, Salt Lake City, Utah, United States of America
- * E-mail:
| | - Aurélie Kapusta
- Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Utah, Salt Lake City, Utah, United States of America
- Department of Human Genetics, University of Utah, Salt Lake City, Utah, United States of America
| | - Jarrett Killpack
- Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Utah, Salt Lake City, Utah, United States of America
| | - Carly Heyrend
- Primary Children’s Hospital, Salt Lake City, Utah, United States of America
| | - Kody Nilsson
- Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Utah, Salt Lake City, Utah, United States of America
| | - Mandy Dickey
- Primary Children’s Hospital, Salt Lake City, Utah, United States of America
| | - Judy A. Daly
- Primary Children’s Hospital, Salt Lake City, Utah, United States of America
- Department of Pathology, University of Utah, Salt Lake City, Utah, United States of America
| | - Krow Ampofo
- Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Utah, Salt Lake City, Utah, United States of America
| | - Andrew T. Pavia
- Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Utah, Salt Lake City, Utah, United States of America
| | - Matthew A. Mulvey
- Department of Pathology, University of Utah, Salt Lake City, Utah, United States of America
| | - Mark Yandell
- Department of Human Genetics, University of Utah, Salt Lake City, Utah, United States of America
- Department of Human Genetics, USTAR Center for Genetic Discovery, University of Utah, Salt Lake City, Utah, United States of America
| | - Kristina G. Hulten
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Anne J. Blaschke
- Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Utah, Salt Lake City, Utah, United States of America
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Hagihara M, Kato H, Uchida S, Yamashita R, Tanaka S, Sakanashi D, Shiota A, Asai N, Koizumi Y, Suematsu H, Yamagishi Y, Namiki N, Mikamo H. The First Report on Pharmacokinetic/Pharmacodynamic Study of Trimethoprim/Sulfamethoxazole against Staphylococcus aureus with a Neutropenic Murine Thigh Infection Model. Chemotherapy 2020; 64:224-232. [PMID: 32434196 DOI: 10.1159/000507540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 03/26/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION With an increase in the incidence of Staphylococcus aureus infections in the healthcare settings and in the community, trimethoprim/sulfamethoxazole (TMP/SMX) has been suggested as a convenient treatment option. However, the appropriate dosage regimen of TMP/SMX is unclear. OBJECTIVE This study aimed to examine the pharmacokinetics/pharmacodynamics (PK/PD) of TMP/SMX against S. aureus using a neutropenic murine thigh infection model. METHODS Five S. aureus isolates with TMP/SMX (1:5 fixed ratio) minimum inhibitory concentrations (MICs) of 0.032-64 μg/mL were tested. The antimicrobial efficacy of TMP/SMX (1-689 mg/kg/day: dose shown as SMX dosage) was calculated as the change in bacterial density after 24 h of treatment. The plasma concentrations of TMP/SMX were detected using high-performance liquid chromatography. RESULTS After TMP/SMX single dose (130 mg/kg), the half-life, area under the blood concentration curve (AUC0-∞), and the protein binding ratio of SMX were 1.5 h, 718.2 μg h/mL, and 73.0 ± 8.3%, respectively. The free AUC/MIC and free %time (%T) above the MIC of SMX were better correlated with the in vivo antimicrobial activity than Cmax/MIC (free AUC/MIC, R2 = 0.69; free %T > MIC, R2 = 0.71; free Cmax/MIC, R2 = 0.53). The distributed doses (2-3 times per day) of TMP/SMX (130, 260, and 390 mg/kg/day) showed higher antimicrobial activity than the single dosage. However, TMP/SMX did not show its antimicrobial activity at <100% free %T > MIC. CONCLUSIONS The TMP/SMX treatment demonstrated that the free AUC/MIC of SMX was the better predictor of the PK/PD index of TMP/SMX.
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Affiliation(s)
- Mao Hagihara
- Department of Molecular Epidemiology and Biomedical Sciences, Aichi Medical University, Aichi, Japan.,Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Hideo Kato
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Shinya Uchida
- Department of Pharmacy Practice and Science, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Rieko Yamashita
- Department of Molecular Epidemiology and Biomedical Sciences, Aichi Medical University, Aichi, Japan
| | - Shimako Tanaka
- Department of Pharmacy Practice and Science, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Daisuke Sakanashi
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Arufumi Shiota
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Nobuhiro Asai
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Yusuke Koizumi
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Hiroyuki Suematsu
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Yuka Yamagishi
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Noriyuki Namiki
- Department of Pharmacy Practice and Science, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan,
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23
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Milstone AM, Voskertchian A, Koontz DW, Khamash DF, Ross T, Aucott SW, Gilmore MM, Cosgrove SE, Carroll KC, Colantuoni E. Effect of Treating Parents Colonized With Staphylococcus aureus on Transmission to Neonates in the Intensive Care Unit: A Randomized Clinical Trial. JAMA 2020; 323:319-328. [PMID: 31886828 PMCID: PMC6990934 DOI: 10.1001/jama.2019.20785] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
IMPORTANCE Staphylococcus aureus is a leading cause of health care-associated infections in the neonatal intensive care unit (NICU). Parents may expose neonates to S aureus colonization, a well-established predisposing factor to invasive S aureus disease. OBJECTIVE To test whether treating parents with intranasal mupirocin and topical chlorhexidine compared with placebo would reduce transmission of S aureus from parents to neonates. DESIGN, SETTING, AND PARTICIPANTS Double-blinded randomized clinical trial in 2 tertiary NICUs in Baltimore, Maryland. Neonates (n = 236) with S aureus-colonized parent(s) were enrolled. The study period was November 7, 2014, through December 13, 2018. INTERVENTIONS Parents were assigned to intranasal mupirocin and 2% chlorhexidine-impregnated cloths (active treatment, n = 117) or petrolatum intranasal ointment and nonmedicated soap cloths (placebo, n = 119) for 5 days. MAIN OUTCOMES AND MEASURES The primary end point was concordant S aureus colonization by 90 days, defined as neonatal acquisition of an S aureus strain that was the same strain as a parental strain at time of screening. Secondary outcomes included neonatal acquisition of any S aureus strain and neonatal S aureus infections. RESULTS Among 236 randomized neonates, 208 were included in the analytic sample (55% male; 76% singleton births; mean birth weight, 1985 g [SD, 958 g]; 76% vaginal birth; mean parent age, 31 [SD, 7] years), of whom 18 were lost to follow-up. Among 190 neonates included in the analysis, 74 (38.9%) acquired S aureus colonization by 90 days, of which 42 (56.8%) had a strain concordant with a parental baseline strain. In the intervention and placebo groups, 13 of 89 neonates (14.6%) and 29 of 101 neonates (28.7%), respectively, acquired concordant S aureus colonization (risk difference, -14.1% [95% CI, -30.8% to -3.9%]; hazard ratio [HR], 0.43 [95.2% CI, 0.16 to 0.79]). A total of 28 of 89 neonates (31.4%) in the intervention group and 46 of 101 (45.5%) in the control group acquired any S aureus strain (HR, 0.57 [95% CI, 0.31 to 0.88]), and 1 neonate (1.1%) in the intervention group and 1 neonate (1.0%) in the control group developed an S aureus infection before colonization. Skin reactions in parents were common (4.8% intervention, 6.2% placebo). CONCLUSIONS AND RELEVANCE In this preliminary trial of parents colonized with S aureus, treatment with intranasal mupirocin and chlorhexidine-impregnated cloths compared with placebo significantly reduced neonatal colonization with an S aureus strain concordant with a parental baseline strain. However, further research is needed to replicate these findings and to assess their generalizability. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02223520.
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Affiliation(s)
- Aaron M. Milstone
- Division of Infectious Diseases, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- Department of Hospital Epidemiology and Infection Control, The Johns Hopkins Hospital, Baltimore, Maryland
| | - Annie Voskertchian
- Division of Infectious Diseases, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Danielle W. Koontz
- Division of Infectious Diseases, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Dina F. Khamash
- Division of Infectious Diseases, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Pediatrics, Cooper University Health Care, Camden, New Jersey
| | - Tracy Ross
- Division of Medical Microbiology, Department of Pathology, The Johns Hopkins Hospital, Baltimore, Maryland
| | - Susan W. Aucott
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Maureen M. Gilmore
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Sara E. Cosgrove
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Karen C. Carroll
- Division of Medical Microbiology, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Elizabeth Colantuoni
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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Wang LJ, Yang X, Qian SY, Liu YC, Yao KH, Dong F, Song WQ. Identification of hemolytic activity and hemolytic genes of Methicillin-resistant Staphylococcus aureus isolated from Chinese children. Chin Med J (Engl) 2020; 133:88-90. [PMID: 31923109 PMCID: PMC7028192 DOI: 10.1097/cm9.0000000000000571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Indexed: 11/25/2022] Open
Affiliation(s)
- Li-Juan Wang
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Xin Yang
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Su-Yun Qian
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Ying-Chao Liu
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Kai-Hu Yao
- Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Key Discipline of Pediatrics (Capital Medical University), Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045 China
| | - Fang Dong
- Bacteriology Laboratory, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Wen-Qi Song
- Bacteriology Laboratory, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
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25
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A Spatial Analysis of Health Disparities Associated with Antibiotic Resistant Infections in Children Living in Atlanta (2002-2010). EGEMS 2019; 7:50. [PMID: 31565665 PMCID: PMC6743030 DOI: 10.5334/egems.308] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background Antibiotic resistant bacteria like community-onset methicillin resistant Staphylococcus aureus (CO-MRSA) have continued to cause infections in children at alarming rates and are associated with health disparities. Geospatial analyses of individual and area level data can enhance disease surveillance and identify socio-demographic and geographic indicators to explain CO-MRSA disease transmission patterns and risks. Methods A case control epidemiology approach was undertaken to compare children with CO-MRSA to a noninfectious condition (unintentional traumatic brain injury (uTBI)). In order to better understand the impact of place based risks in developing these types of infections, data from electronic health records (EHR) were obtained from CO-MRSA cases and compared to EHR data from controls (uTBI). US Census data was used to determine area level data. Multi-level statistical models were performed using risk factors determined a priori and geospatial analyses were conducted and mapped. Results From 2002-2010, 4,613 with CO-MRSA and 34,758 with uTBI were seen from two pediatric hospitals in Atlanta, Georgia. Hispanic children had reduced odds of infection; females and public health insurance were more likely to have CO-MRSA. Spatial analyses indicate significant 'hot spots' for CO-MRSA and the overall spatial cluster locations, differed between CO-MRSA cases and uTBI controls. Conclusions Differences exist in race, age, and type of health insurance between CO-MRSA cases compared to noninfectious control group. Geographic clustering of cases is distinct from controls, suggesting placed based factors impact risk for CO-MRSA infection.
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Conroy BS, Grigg JC, Kolesnikov M, Morales LD, Murphy MEP. Staphylococcus aureus heme and siderophore-iron acquisition pathways. Biometals 2019; 32:409-424. [PMID: 30911924 DOI: 10.1007/s10534-019-00188-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 03/18/2019] [Indexed: 11/24/2022]
Abstract
Staphylococcus aureus is a versatile opportunistic human pathogen. Infection by this bacterium requires uptake of iron from the human host, but iron is highly restricted in this environment. Staphylococcus aureus iron sufficiency is achieved primarily through uptake of heme and high-affinity iron chelators, known as siderophores. Two siderophores (staphyloferrins) are produced and secreted by S. aureus into the extracellular environment to capture iron. Staphylococcus aureus expresses specific uptake systems for staphyloferrins and more general uptake systems for siderophores produced by other microorganisms. The S. aureus heme uptake system uses highly-specific cell surface receptors to extract heme from hemoglobin and hemoglobin-haptoglobin complexes for transport into the cytoplasm where it is degraded to liberate iron. Initially thought to be independent systems, recent findings indicate that these iron uptake pathways intersect. IruO is a reductase that releases iron from heme and some ferric-siderophores. Moreover, multifunctional SbnI produces a precursor for staphyloferrin B biosynthesis, and also binds heme to regulate expression of the staphyloferrin B biosynthesis pathway. Intersection of the S. aureus iron uptake pathways is hypothesized to be important for rapid adaptation to available iron sources. Components of the heme and siderophore uptake systems are currently being targeted in the development of therapeutics against S. aureus.
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Affiliation(s)
- Brigid S Conroy
- Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, 2350 Health Sciences Mall, Vancouver, V6T 1Z3, Canada
| | - Jason C Grigg
- Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, 2350 Health Sciences Mall, Vancouver, V6T 1Z3, Canada
| | - Maxim Kolesnikov
- Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, 2350 Health Sciences Mall, Vancouver, V6T 1Z3, Canada
| | - L Daniela Morales
- Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, 2350 Health Sciences Mall, Vancouver, V6T 1Z3, Canada
| | - Michael E P Murphy
- Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, 2350 Health Sciences Mall, Vancouver, V6T 1Z3, Canada.
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27
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Easton-Calabria A, Demary KC, Oner NJ. Beyond Pollination: Honey Bees (Apis mellifera) as Zootherapy Keystone Species. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2018.00161] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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28
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Gualandi N, Mu Y, Bamberg WM, Dumyati G, Harrison LH, Lesher L, Nadle J, Petit S, Ray SM, Schaffner W, Townes J, McDonald M, See I. Racial Disparities in Invasive Methicillin-resistant Staphylococcus aureus Infections, 2005-2014. Clin Infect Dis 2018; 67:1175-1181. [PMID: 29659728 PMCID: PMC6232852 DOI: 10.1093/cid/ciy277] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 04/04/2018] [Indexed: 01/26/2023] Open
Abstract
Background Despite substantial attention to the individual topics, little is known about the relationship between racial disparities and antimicrobial-resistant and/or healthcare-associated infection trends, such as for methicillin-resistant Staphylococcus aureus (MRSA). Methods We analyzed Emerging Infections Program 2005-2014 surveillance data (9 US states) to determine whether reductions in invasive MRSA incidence (isolated from normally sterile body sites) affected racial disparities in rates. Case classification included hospital-onset (HO, culture >3 days after admission), healthcare-associated community onset (HACO, culture ≤3 days after admission and dialysis, hospitalization, surgery, or long-term care residence within 1 year prior), or community-associated (CA, all others). Negative binomial regression models were used to evaluate the adjusted rate ratio (aRR) of MRSA in black patients (vs in white patients) controlling for age, sex, and temporal trends. Results During 2005-2014, invasive HO and HACO (but not CA) MRSA rates decreased. Despite this, blacks had higher rates for HO (aRR, 3.20; 95% confidence interval [CI], 2.35-4.35), HACO (aRR, 3.84; 95% CI, 2.94-5.01), and CA (aRR, 2.78; 95% CI, 2.30-3.37) MRSA. Limiting the analysis to chronic dialysis patients reduced, but did not eliminate, the higher HACO MRSA rates among blacks (aRR, 1.83; 95% CI, 1.72-1.96), even though invasive MRSA rates among dialysis patients decreased during 2005-2014. These racial differences did not change over time. Conclusions Previous reductions in healthcare-associated MRSA infections have not affected racial disparities in MRSA rates. Improved understanding of the underlying causes of these differences is needed to develop effective prevention interventions that reduce racial disparities in MRSA infections.
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Affiliation(s)
- Nicole Gualandi
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Yi Mu
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Wendy M Bamberg
- Colorado Department of Public Health and Environment, Denver
| | - Ghinwa Dumyati
- New York-Rochester Emerging Infections Program and University of Rochester Medical Center
| | - Lee H Harrison
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | | | | | - Sue Petit
- Connecticut Department of Public Health, Hartford
| | - Susan M Ray
- Georgia Emerging Infections Program and Emory University School of Medicine, Decatur
| | | | - John Townes
- Oregon Health & Science University, Portland
| | - Mariana McDonald
- Office of Health Disparities, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Isaac See
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
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29
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Deguchi H, Kitazawa K, Kayukawa K, Kondoh E, Fukumoto A, Yamasaki T, Kinoshita S, Sotozono C. The trend of resistance to antibiotics for ocular infection of Staphylococcus aureus, coagulase-negative staphylococci, and Corynebacterium compared with 10-years previous: A retrospective observational study. PLoS One 2018; 13:e0203705. [PMID: 30192856 PMCID: PMC6128643 DOI: 10.1371/journal.pone.0203705] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 08/25/2018] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To retrospectively identify epidemiological trends of infection on the ocular surface and investigate trends of resistance to bacterial antibiotics compared with 10-years previous for Staphylococcus aureus, coagulase-negative staphylococci (CNS), and Corynebacterium in Japan. MATERIALS AND METHODS Bacterial isolate samples were collected from the conjunctival sacs of eyes afflicted with conjunctivitis, keratitis, dacryocystitis, and hordeolum from September 2004 through November 2005 (n = 145 isolates) and September 2014 through November 2015 (n = 195 isolates) at the Baptist Eye Institute, Kyoto, Japan. The prevalence of methicillin-resistant S. aureus (MRSA), methicillin-resistant CNS (MR-CNS), and fluoroquinolone-resistant Corynebacterium were examined, and susceptibility of isolated bacteria to levofloxacin (LVFX), cefmenoxime (CMX), chloramphenicol (CP), erythromycin (EM), vancomycin (VCM), and arbekacin (ABK) were compared between both time periods using the disc susceptibility method. RESULTS Over the 10-year period from initial to final examination, the prevalence of MRSA and MR-CNS significantly decreased from 52% to 22% (P < 0.05) and from 47% to 25% (P < 0.05), respectively, yet there was no change in the prevalence of fluoroquinolone-resistant Corynebacterium (60% and 54%; P = 0.38). Antibiotic-resistance trend analysis revealed that susceptibility to antibiotics in 2014-2015 was similar to that in 2004-2005. MRSA and MR-CNS were susceptible to CP (88%), VCM (100%), and ABK (100%), while fluoroquinolone-resistant Corynebacterium was susceptible to CMX (100%), VCM (100%), and ABK (96%). CONCLUSION The prevalence of MRSA and MR-CNS significantly decreased between the two time periods, yet more than 50% of the Corynebacterium isolates were still resistant to LVFX. Although no increase in bacterial resistance to antibiotics was found, a cautionary use of fluoroquinolone eye drops should be considered.
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Affiliation(s)
| | - Koji Kitazawa
- Baptist Eye Institute, Kyoto, Japan
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
- * E-mail:
| | | | - Eri Kondoh
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Akiko Fukumoto
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | - Shigeru Kinoshita
- Department of Frontier Medical Science and Technology for Ophthalmology, Kyoto, Prefectural University of Medicine, Kyoto, Japan
| | - Chie Sotozono
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Is surgical antibiotic prophylaxis necessary for pediatric orchiopexy? J Pediatr Urol 2018; 14:261.e1-261.e7. [PMID: 29501378 DOI: 10.1016/j.jpurol.2018.01.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 01/24/2018] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Surgeons frequently use surgical antibiotic prophylaxis (SAP), despite limited evidence to support its efficacy. Potential adverse events associated with antibiotic use include allergic reaction (including anaphylaxis), Clostridium difficile infection, and selecting for resistant bacteria. Surgical site infections (SSI) are very rare in patients undergoing clean pediatric urologic procedures. Current guidelines are unclear about the efficacy of surgical antibiotic prophylaxis for prevention of SSI in the pediatric population. OBJECTIVE It was hypothesized that children who received SAP prior to orchiopexy would have no reduction in surgical site infection (SSI) risk but an increased risk of antibiotic-associated adverse events. METHODS A retrospective cohort study was conducted of all males aged between 30 days and 18 years who underwent an orchiopexy (ICD-9 CM 62.5) in an ambulatory or observation setting from 2004 to 2015 using the Pediatric Health Information System database. Inpatients and those with concomitant procedures were excluded. Chi-squared or Fisher's exact tests were used to determine the association between SAP and allergic reaction (defined as a charge for epinephrine or ICD-9 diagnosis code for allergic reaction on the date of surgery) and any of the following within 30 days: SSI, hospital readmission or any repeat hospital encounter. Mixed effects logistic regression was performed, controlling for age, race, and insurance, and clustering of similar practice patterns by hospital. RESULTS A total of 71,767 patients were included: median age was 4.6 years, 61.4% were white, and 49.3% had public insurance; 33.5% received SAP. Of these participants, 996/71,767 (1.4%) had a perioperative allergic reaction and <0.1% were diagnosed with an SSI. On mixed effects logistic regression, those who received SAP had 1.2 times the odds of a perioperative allergic reaction compared with those who did not receive SAP (P = 0.005). Surgical antibiotic prophylaxis was not associated with decreased rates of SSI, lower hospital readmission, nor a lower chance of a repeat encounter within 30 days. CONCLUSIONS In patients undergoing orchiopexy, it was found that SAP did not reduce the risk of postoperative SSI, readmissions, or hospital visits. Patients who received SAP had significantly increased odds of perioperative allergic reaction. This demonstrated that the risks of SAP outweigh the benefits in children undergoing orchiopexy.
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Analysis of Invasive Community-Acquired Methicillin-Susceptible Staphylococcus aureus Infections During a Period of Declining Community Acquired Methicillin-Resistant Staphylococcus aureus Infections at a Large Children's Hospital. Pediatr Infect Dis J 2018; 37:235-241. [PMID: 28859018 DOI: 10.1097/inf.0000000000001753] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The epidemiology of community acquired (CA) Staphylococcus aureus infections is changing in the United States. We investigated the current epidemiology of S. aureus infections at Texas Children's Hospital. METHODS Patients with CA-S. aureus skin and soft tissue and invasive infections were retrospectively identified from January 1, 2007 to December 31, 2014. Invasive CA-MSSA isolates were characterized by pulsed field gel electrophoresis, Spa typing, agr type and presence of lukSF-PV (pvl) genes. Medical records were reviewed. Statistical analyses included Fisher exact, χ for trend and Wilcoxon tests. RESULTS CA-MRSA infections decreased by 60.4% (1461-578 infections) from 2007 to 2014 (P < 0.0001), while CA-MSSA infections averaged 550 infections annually. Invasive CA-MRSA infections decreased by 67.2% from 61 to 20 infections (P < 0.0001); invasive CA-MSSA averaged 44 infections annually. Among 296 invasive CA-MSSA isolates, 74 (25%) isolates were USA300 and 88 (30%) were pvl+. USA300 declined among invasive CA-MSSA over time (P < 0.008). Musculoskeletal infections were most common (242/296, 82%); 52/242 (21.5%) isolates were USA300 and 62/242 (25.6%) pvl+. All 18 isolates from musculoskeletal infections with deep venous thrombosis and/or septic shock were pvl+ and 16/18 (88.9%) were USA300. Pneumonia isolates were mainly USA300 (8, 66.7%) and pvl+ (11, 91.7%). CONCLUSIONS MSSA now cause the majority of invasive CA-S. aureus infections at our institution. Molecular analysis of invasive CA-MSSA isolates suggests strain diversity with USA300 on the decline and that disease presentations are to some extent strain specific. Changes in the CA-S. aureus epidemiology may, in part, be related to changes in immunity to the USA300 clone in the general population.
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Abstract
Antimicrobial resistance is a global public health threat and a danger that continues to escalate. These menacing bacteria are having an impact on all populations; however, until recently, the increasing trend in drug-resistant infections in infants and children has gone relatively unrecognized. This article highlights the current clinical and molecular data regarding infection with antibiotic-resistant bacteria in children, with an emphasis on transmissible resistance and spread via horizontal gene transfer.
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Affiliation(s)
- Rachel L Medernach
- Department of Pediatrics, Rush Medical College, Rush University Medical Center, 1710 W. Harrison Street, Suite 710 POB, Chicago, IL 60612, USA
| | - Latania K Logan
- Department of Pediatrics, Rush Medical College, Rush University Medical Center, 1710 W. Harrison Street, Suite 710 POB, Chicago, IL 60612, USA.
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Khamash DF, Voskertchian A, Milstone AM. Manipulating the microbiome: evolution of a strategy to prevent S. aureus disease in children. J Perinatol 2018; 38:105-109. [PMID: 29120455 PMCID: PMC5790614 DOI: 10.1038/jp.2017.155] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 08/21/2017] [Accepted: 08/30/2017] [Indexed: 12/12/2022]
Abstract
Hospitalized infants have the highest rates of invasive Staphylococcus aureus disease of any population and infection control strategies such as decolonization have been insufficient. For decades, researchers began studying the microbiome in search of new prevention strategies. The resident microbiota was found to be closely associated with susceptibility and at times, resistance to S. aureus colonization. The evolution of nucleic acid based techniques has enhanced our understanding of the complex relationship between the nasal microbiota and S. aureus colonization. We review what is known about bacterial communities in the nasal cavity of infants and discuss how future microbiome studies may help identify novel interventions to protect high-risk infants from S. aureus disease.
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Affiliation(s)
- Dina F. Khamash
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Annie Voskertchian
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Aaron M. Milstone
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Hospital Epidemiology and Infection Control, Johns Hopkins Hospital, Baltimore, MD
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Autmizguine J, Melloni C, Hornik CP, Dallefeld S, Harper B, Yogev R, Sullivan JE, Atz AM, Al-Uzri A, Mendley S, Poindexter B, Mitchell J, Lewandowski A, Delmore P, Cohen-Wolkowiez M, Gonzalez D. Population Pharmacokinetics of Trimethoprim-Sulfamethoxazole in Infants and Children. Antimicrob Agents Chemother 2018; 62:e01813-17. [PMID: 29084742 PMCID: PMC5740321 DOI: 10.1128/aac.01813-17] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 10/07/2017] [Indexed: 11/20/2022] Open
Abstract
Trimethoprim (TMP)-sulfamethoxazole (SMX) is used to treat various types of infections, including community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) and Pneumocystis jirovecii infections in children. Pharmacokinetic (PK) data for infants and children are limited, and the optimal dosing is not known. We performed a multicenter, prospective PK study of TMP-SMX in infants and children. Separate population PK models were developed for TMP and SMX administered by the enteral route using nonlinear mixed-effects modeling. Optimal dosing was determined on the basis of the matching adult TMP exposure and attainment of the surrogate pharmacodynamic (PD) target for efficacy, a free TMP concentration above the MIC over 50% of the dosing interval. Data for a total of 153 subjects (240 samples for PK analysis) with a median postnatal age of 8 years (range, 0.1 to 20 years) contributed to the analysis for both drugs. A one-compartment model with first-order absorption and elimination characterized the TMP and SMX PK data well. Weight was included in the base model for clearance (CL/F) and volume of distribution (V/F). Both TMP and SMX CL/F increased with age. In addition, TMP and SMX CL/F were inversely related to the serum creatinine and albumin concentrations, respectively. The exposure achieved in children after oral administration of TMP-SMX at 8/40 mg/kg of body weight/day divided into administration every 12 h matched the exposure achieved in adults after administration of TMP-SMX at 320/1,600 mg/day divided into administration every 12 h and achieved the PD target for bacteria with an MIC of 0.5 mg/liter in >90% of infants and children. The exposure achieved in children after oral administration of TMP-SMX at 12/60 and 15/75 mg/kg/day divided into administration every 12 h matched the exposure achieved in adults after administration of TMP-SMX at 640/3,200 mg/day divided into administration every 12 h in subjects 6 to <21 years and 0 to <6 years of age, respectively, and was optimal for bacteria with an MIC of up to 1 mg/liter.
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Affiliation(s)
- Julie Autmizguine
- Research Center, CHU Sainte-Justine, and Department of Pharmacology and Physiology, Université de Montréal, Montreal, Quebec, Canada
| | - Chiara Melloni
- Duke Clinical Research Institute, Durham, North Carolina, USA
| | | | | | - Barrie Harper
- Duke Clinical Research Institute, Durham, North Carolina, USA
| | - Ram Yogev
- Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Janice E Sullivan
- University of Louisville, Norton Children's Hospital and Kosair Charities Pediatric Clinical Research Unit, Louisville, Kentucky, USA
| | - Andrew M Atz
- Medical University of South Carolina, Charleston, South Carolina, USA
| | - Amira Al-Uzri
- Oregon Health and Science University, Portland, Oregon, USA
| | - Susan Mendley
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Brenda Poindexter
- Perinatal Institute, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | | | | | | | | | - Daniel Gonzalez
- UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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Antiabong JF, Kock MM, Maphanga TG, Salawu AM, Mbelle NM, Ehlers MM. Trends in the Genetic Background of Methicillin-Resistant Staphylococcus Aureus Clinical Isolates in a South African Hospital: An Institutional-Based Observational Study. Open Microbiol J 2017; 11:339-351. [PMID: 29290846 PMCID: PMC5737024 DOI: 10.2174/1874285801711010339] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 11/01/2017] [Accepted: 11/11/2017] [Indexed: 01/03/2023] Open
Abstract
Background: This study sought to understand the epidemio-ecological dynamics of MRSA isolates associated with a South African hospital over a period spanning year 2007-8 (a previous study reported in 2009) and year 2010-11 (this study). Methods: One hundred and ninety three isolates were characterised by molecular fingerprinting methods including pulsed field gel electrophoresis (PFGE), spa typing, agr-typing, SCCmec-typing, and multilocus sequence typing (MLST). The Vitek-2 automated antibiogram of representative isolates was also performed. Results: Our data shows that the distribution of MRSA strains among the different clinical conditions was rarely dependent on the genetic backbone or genotype. Compared to the previous survey in 2009, CA-MRSA isolates increased by 31% while HA-MRSA isolates decreased by 17%. An increase in genetic diversity was also revealed including the detection of three pandemic clonal complexes (spa type t012-ST36/CC30, spa type t037-ST239/CC8, spa type t891-ST22/CC22 and spa type t1257-ST612/CC8). Majority of the genotypes were classified as Spa Cluster B-SCCmec I-agr I 19.2%; (37/193) Spa Cluster A-SCCmercury-agr I 14.5%; (28/193) Conclusion: This study reveals that increased diversity in MRSA genetic background was associated with resistance to frontline antibiotics. Also, an increase was recorded in the CA-MRSA/HA-MRSA ratio within a 5-year period despite the continuous dominance of the HA-MRSA genotype.
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Affiliation(s)
- John F Antiabong
- Department of Medical Microbiology, University of Pretoria, Gauteng, South Africa
| | - Marleen M Kock
- Department of Medical Microbiology, University of Pretoria, Gauteng, South Africa
| | - Tsidiso G Maphanga
- Department of Medical Microbiology, University of Pretoria, Gauteng, South Africa
| | - Adeola M Salawu
- Department of Medical Microbiology, University of Pretoria, Gauteng, South Africa
| | - Nontombi M Mbelle
- Department of Medical Microbiology, University of Pretoria, Gauteng, South Africa
| | - Marthie M Ehlers
- Department of Medical Microbiology, University of Pretoria, Gauteng, South Africa
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36
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Yang X, Qian S, Yao K, Wang L, Liu Y, Dong F, Song W, Zhen J, Zhou W, Xu H, Zheng H, Li W. Multiresistant ST59-SCCmec IV-t437 clone with strong biofilm-forming capacity was identified predominantly in MRSA isolated from Chinese children. BMC Infect Dis 2017; 17:733. [PMID: 29178841 PMCID: PMC5702180 DOI: 10.1186/s12879-017-2833-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 11/15/2017] [Indexed: 11/16/2022] Open
Abstract
Background This study aimed to investigate the clinical and molecular epidemiology and biofilm formation of Staphylococcus aureus (SA) isolated from pediatricians in China. Methods SA strains were isolated from Beijing Children’s hospital from February 2016 to January 2017. Isolates were typed by multilocus sequence typing (MLST), spa and SCCmec typing (for Methicillin-resistant SA [MRSA] only). Antimicrobial susceptibility testing was performed by agar dilution method except sulphamethoxazole/trimethoprim (E-test method). Biofilm formation and biofilm associated genes were detected. Results Totally 104 children (41 females and 63 males; median age, 5.2 months) were enrolled in this study, in which 60 patients suffered from MRSA infection. Among the 104 cases, 54.8% were categorized as community associated SA (CA-SA) infections. The children under 3 years were more likely to occur CA-SA infections compared with older ones (P = 0.0131). ST59-SCCmec IV-t437 (61.7%) was the most prevalent genotype of MRSA, and ST22-t309 (18.2%), ST5-t002 (9.1%), ST6-t701 (9.1%), ST188-t189 (9.1%) were the top four genotypes of methicillin-sensitive SA (MSSA). All the present isolates were susceptible to linezolid, vancomycin, trimethoprim-sulfamethoxazole, mupirocin, tigecyclin, fusidic acid. No erythromycin-susceptible isolate was determined, and only a few isolates (3.8%) were identified as susceptible to penicillin. Multi-drug resistant isolates were reponsible for 83.8% of the ST59-SCCmec IV-t437 isolates. The isolates with strong biofilm formation were found in 85% of MRSA and 53.2% of MSSA, and in 88.7% of ST59-SCCmec IV-t437 isolates. Biofilm formation ability varied not only between MRSA and MSSA (P = 0.0053), but also greatly among different genotypes (P < 0.0001). The prevalence of the biofilm associated genes among ST59-SCCmec IV-t437 clone was: icaA (100.0%), icaD (97.3%), fnbpA (100.0%), fnbpB (0), clfA (100%), clfB (100%), cna (2.7%), bbp (0), ebpS (88.5%), sdrC (78.4%), sdrD (5.4%), and sdrE (94.5%). Conclusions These results indicated strong homology of the MRSA stains isolated from Chinese children, which was caused by spread of multiresistant ST59-SCCmec IV-t437 clone with strong biofilm formation ability. The MSSA strains, in contrast, were very heterogeneity, half of which could produce biofilm strongly. Electronic supplementary material The online version of this article (10.1186/s12879-017-2833-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xin Yang
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, No.56 Nan-Li-Shi Road, Beijing, 100045, China
| | - Suyun Qian
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, No.56 Nan-Li-Shi Road, Beijing, 100045, China.
| | - Kaihu Yao
- MOE Key Laboratory of Major Diseases in Children, National Key Discipline of Pediatrics (Capital Medical University), National Clinical Research Center for Respiratory Diseases, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Lijuan Wang
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, No.56 Nan-Li-Shi Road, Beijing, 100045, China
| | - Yingchao Liu
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, No.56 Nan-Li-Shi Road, Beijing, 100045, China
| | - Fang Dong
- Bacteriology Laboratory, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Wenqi Song
- Bacteriology Laboratory, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Jinghui Zhen
- Bacteriology Laboratory, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Wei Zhou
- Bacteriology Laboratory, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Hong Xu
- Bacteriology Laboratory, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Hongyan Zheng
- Bacteriology Laboratory, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Wenting Li
- MOE Key Laboratory of Major Diseases in Children, National Key Discipline of Pediatrics (Capital Medical University), National Clinical Research Center for Respiratory Diseases, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
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André ED, Pereira RFA, Snyder RE, Machado TS, André LSP, Cardoso CAA, Aguiar-Alves F. Emergence of methicillin-resistant Staphylococcus aureus from clonal complex 398 with no livestock association in Brazil. Mem Inst Oswaldo Cruz 2017; 112:647-649. [PMID: 28902291 PMCID: PMC5572451 DOI: 10.1590/0074-02760170040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/15/2017] [Indexed: 02/25/2023] Open
Abstract
CC398 is a livestock-associated Staphylococcus aureus. However, it has also been isolated from humans with no previous contact with livestock. A surveillance of methicillin-resistant S. aureus colonisation among children attending public day care centres and hospitals in Niterói and Rio de Janeiro, Brazil, between 2011 and 2013, resulted in the isolation of six cases of CC398 from individuals with no previous exposure to livestock. These isolates showed a high frequency of the erm(C) gene (4/6, 66.7%) with induced resistance to clindamycin, and a relatively high frequency of SEs and lukS/lukF genes. These results suggest the emergence of a non-LA-CC398 in Brazil.
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Affiliation(s)
- Egidio Domingos André
- Universidade Federal Fluminense, Laboratóro Universitário Rodolfo Albino, Laboratório de Epidemiologia e Biotecnologia Molecular, Niterói, RJ, Brasil
| | - Renata Freire Alves Pereira
- Universidade Federal Fluminense, Laboratóro Universitário Rodolfo Albino, Laboratório de Epidemiologia e Biotecnologia Molecular, Niterói, RJ, Brasil.,Universidade Federal Fluminense, Instituto de Biologia, Programa de Pós-Graduação em Ciência e Biotecnologia, Niterói, RJ, Brasil
| | - Robert Eugene Snyder
- Universidade Federal Fluminense, Laboratóro Universitário Rodolfo Albino, Laboratório de Epidemiologia e Biotecnologia Molecular, Niterói, RJ, Brasil.,University of California, School of Public Health, Division of Epidemiology, Berkeley, California, USA
| | - Thamiris Santana Machado
- Universidade Federal Fluminense, Laboratóro Universitário Rodolfo Albino, Laboratório de Epidemiologia e Biotecnologia Molecular, Niterói, RJ, Brasil.,Universidade Federal Fluminense, Escola de Medicina, Programa de Pós-Graduação em Patologia, Niterói, RJ, Brasil
| | - Lialyz Soares Pereira André
- Universidade Federal Fluminense, Laboratóro Universitário Rodolfo Albino, Laboratório de Epidemiologia e Biotecnologia Molecular, Niterói, RJ, Brasil
| | - Claudete Aparecida Araújo Cardoso
- Universidade Federal Fluminense, Faculdade de Medicina, Departmento Materno-Infantil, Niterói, RJ, Brasil.,Universidade Federal Fluminense, Escola de Medicina, Programa de Pós-Graduação em Patologia, Niterói, RJ, Brasil
| | - Fábio Aguiar-Alves
- Universidade Federal Fluminense, Laboratóro Universitário Rodolfo Albino, Laboratório de Epidemiologia e Biotecnologia Molecular, Niterói, RJ, Brasil.,Universidade Federal Fluminense, Escola de Medicina, Programa de Pós-Graduação em Patologia, Niterói, RJ, Brasil
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38
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Trends in Community Versus Health Care-Acquired Methicillin-Resistant Staphylococcus aureus Infections. Curr Infect Dis Rep 2017; 19:48. [PMID: 29101576 DOI: 10.1007/s11908-017-0605-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Since the first clinical isolate of methicillin-resistant Staphylococcus aureus was described in 1961, this pathogen has established itself as a leading cause of health care-associated infections. More recently, MRSA has become a relatively common cause of infection among persons without typical health care-associated risk factors and is now the most common cause of community-onset purulent skin and soft-tissue infections in many regions of the USA. The appearance of "community-associated" MRSA is not due to the expansion of health care-associated MRSA into the community but rather the result of the independent emergence of a novel clone of MRSA. There are some encouraging data to suggest that the incidence of MRSA infection, particularly invasive infections, is decreasing in the USA, but this pathogen remains a common cause of infection associated with substantial morbidity and mortality. Thus, there is ongoing need for effective and safe prevention, diagnosis, and treatment strategies.
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39
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Sanchez J, Schneider A, Tretter JT, Shopsin B, Al-Qaqaa Y, Khaitan A, Chadha T. Community-Acquired MRSA Pericarditis and Mediastinitis in a Previously Healthy Infant. J Pediatr Intensive Care 2017; 7:97-101. [PMID: 31073479 DOI: 10.1055/s-0037-1607325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 09/16/2017] [Indexed: 10/18/2022] Open
Abstract
Invasive community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infections disproportionately affect children, but there are few pediatric reports of pericarditis and mediastinitis caused by CA-MRSA in previously healthy children. Here we report a severe case of CA-MRSA pericarditis with extension to the mediastinum and carotid sheath in a previously healthy 8-month-old infant who was successfully treated with surgical interventions and with a combination of daptomycin and vancomycin. The relatively indolent clinical course in this patient was notable given the significant extent of infection. This case highlights the potential virulence of CA-MRSA in previously healthy children and the importance of early diagnosis, prompt drainage, and appropriate antibiotic coverage.
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Affiliation(s)
- Joselito Sanchez
- Division of Infectious Diseases and Immunology, Department of Pediatrics, New York University School of Medicine, New York, New York
| | - Amanda Schneider
- Department of Pediatrics, New York University School of Medicine, New York, New York
| | - Justin T Tretter
- Division of Cardiology, Department of Pediatrics, New York University School of Medicine, New York, New York
| | - Bo Shopsin
- Division of Infectious Diseases, Department of Medicine, New York University School of Medicine, New York, New York
| | - Yasir Al-Qaqaa
- Division of Critical Care, Department of Pediatrics, New York University School of Medicine, New York, New York
| | - Alka Khaitan
- Division of Infectious Diseases and Immunology, Department of Pediatrics, New York University School of Medicine, New York, New York
| | - Tanya Chadha
- Division of Critical Care, Department of Pediatrics, University of Florida College of Medicine, Jacksonville, Florida
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Trends in Diagnoses Among Hospitalizations of HIV-infected Children and Adolescents in the United States: 2003-2012. Pediatr Infect Dis J 2017. [PMID: 28640002 PMCID: PMC6033323 DOI: 10.1097/inf.0000000000001645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Using data from 2003-2012, we updated a previous analysis of trends in hospitalizations of HIV-infected children and adolescents in the United States. METHODS We used data from the Kids´ Inpatient Database of the Healthcare Cost and Utilization Project to derive nationally representative estimates of the number of hospitalizations and the rates per 1000 hospitalizations of select discharge diagnoses and procedures in 2003, 2006, 2009 and 2012 among HIV-infected and HIV-uninfected children and adolescents ≤18 years, excluding hospitalizations for conditions related to pregnancy/delivery and neonatal diagnoses. We also examined trends in the prevalence of select discharge diagnoses and procedures using multivariable logistic regression models. RESULTS During 2003-2012, the number of hospitalizations for HIV-infected children declined 58% versus 17% for uninfected, but the odds of having discharge codes for most of the diagnoses and procedures studied, including death during hospitalization, remained higher among HIV-infected compared with uninfected children. Among HIV-infected children, the prevalence of discharge diagnoses for pneumonia, pneumococcal disease and varicella/herpes zoster infections and odds of death during hospitalization decreased over time, while bacterial infections/sepsis and methicillin-resistant Staphylococcus aureus increased. Among HIV-uninfected children, there was no increase in diagnoses of bacterial infection/sepsis, but otherwise trends were similar. CONCLUSIONS The number of hospitalizations for HIV-infected children declined from 2003 to 2012. The decreased prevalence of several discharge diagnoses and lower risk of death during hospitalization likely reflect improvements in HIV therapies and increased uptake of other preventive strategies. However, the increasing prevalence of discharge diagnoses for bacterial infections/sepsis warrants further attention and monitoring.
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41
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Popovich KJ, Snitkin ES, Hota B, Green SJ, Pirani A, Aroutcheva A, Weinstein RA. Genomic and Epidemiological Evidence for Community Origins of Hospital-Onset Methicillin-Resistant Staphylococcus aureus Bloodstream Infections. J Infect Dis 2017; 215:1640-1647. [PMID: 28486667 DOI: 10.1093/infdis/jiw647] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 12/23/2016] [Indexed: 12/12/2022] Open
Abstract
Background We examined whether disparities existed in hospital-onset (HO) Staphylococcus aureus bloodstream infections (BSIs) and used whole-genome sequencing (WGS) to identify factors associated with USA300 transmission networks. Methods We evaluated HO methicillin-susceptible S. aureus (MSSA) and HO methicillin-resistant S. aureus (MRSA) BSIs for 2009-2013 at 2 hospitals and used an adjusted incidence for modeling. WGS and phylogenetic analyses were performed on a sample of USA300 BSI isolates. Epidemiologic data were analyzed in the context of phylogenetic reconstructions. Results On multivariate analysis, male sex, African-American race, and non-Hispanic white race/ethnicity were significantly associated with HO-MRSA BSIs whereas Hispanic ethnicity was negatively associated (rate ratio, 0.41; P = .002). Intermixing of community-onset and HO-USA300 strains on the phylogenetic tree indicates that these strains derive from a common pool. African-American race was the only factor associated with genomic clustering of isolates. Conclusions In a multicenter assessment of HO-S. aureus BSIs, African-American race was significantly associated with HO-MRSA but not MSSA BSIs. There appears to be a nexus of USA300 community and hospital transmission networks, with a community factor being the primary driver. Our data suggest that HO-USA300 BSIs likely are due to colonizing strains acquired in the community before hospitalization. Therefore, prevention efforts may need to extend to the community for maximal benefit.
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Affiliation(s)
- Kyle J Popovich
- Division of Infectious Diseases, Rush University Medical Center/Stroger Hospital of Cook County, Chicago, Illinois
| | - Evan S Snitkin
- Department of Microbiology and Immunology, Division of Infectious Diseases, University of Michigan, Ann Arbor
| | - Bala Hota
- Division of Infectious Diseases, Rush University Medical Center/Stroger Hospital of Cook County, Chicago, Illinois
| | - Stefan J Green
- Department of Microbiology and Immunology, University of Illinois at Chicago, Research Resources Center
| | - Ali Pirani
- Department of Microbiology and Immunology, University of Illinois at Chicago, Research Resources Center
| | - Alla Aroutcheva
- Division of Infectious Diseases, Rush University Medical Center/Stroger Hospital of Cook County, Chicago, Illinois
| | - Robert A Weinstein
- Division of Infectious Diseases, Rush University Medical Center/Stroger Hospital of Cook County, Chicago, Illinois
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Alzomor O, Alfawaz T, Alshahrani D. Invasive community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infection in children: case series and literature review. Int J Pediatr Adolesc Med 2017; 4:119-123. [PMID: 30805514 PMCID: PMC6372568 DOI: 10.1016/j.ijpam.2017.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/08/2017] [Accepted: 07/11/2017] [Indexed: 12/31/2022]
Abstract
The majority of CA-MRSA infections present as skin and soft tissue infections such as abscesses or cellulitis. However, CA-MRSA can cause invasive infections such as joint infections, necrotizing pneumonia or septicemia. Here we describe five cases with CA-MRSA bacteremia complicated with osteoarticular infection, necrotizing pneumonia, and infective endocarditis. We report these case series to outline the spectrum of invasive CA-MRSA diseases and to demonstrate clinical outcome. Early proper intervention with regular revisiting the empirical treatment based on local susceptibility data is crucial. More data on the risk factors for acquiring and spread of CA-MRSA in children are required.
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Affiliation(s)
- Omar Alzomor
- Section of Pediatric Infectious Diseases, Children's Specialized Hospital, King Fahad Medical City, Riyadh, Saudi Arabia
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43
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Kavanagh KT, Abusalem S, Calderon LE. The incidence of MRSA infections in the United States: is a more comprehensive tracking system needed? Antimicrob Resist Infect Control 2017; 6:34. [PMID: 28396730 PMCID: PMC5383958 DOI: 10.1186/s13756-017-0193-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/28/2017] [Indexed: 02/05/2023] Open
Abstract
A review of epidemiological studies on the incidence of MRSA infections overtime was performed along with an analysis of data available for download from Hospital Compare (https://data.medicare.gov/data/hospital-compare). We found the estimations of the incidence of MRSA infections varied widely depending upon the type of population studied, the types of infections captured and in the definitions and terminology used to describe the results. We could not find definitive evidence that the incidence of MRSA infections in U.S. community or facilities is decreasing significantly. Of concern are recent data reported to the National Healthcare Safety Network (NHSN) on MRSA bloodstream infections which indicate that by the end of 2015 there had been little change in the average facility Standardized Infection Ratio (0.988), compared to a 2010-2011 baseline and is significantly increased compared to the previous year. This is in contradistinction to the recent Veterans Administration study which reported over an 80% reduction in MRSA infections. However, this discrepancy may be due to the inability to reconcile the baselines of the two data sets; and the observed increase may be artifactual due to aberrations in the NHSN tracking system. Our review supports the need for implementation of a comprehensive tracking and monitoring system involving all types of healthcare facilities for multi-drug resistant organisms, along with concomitant funding for both staff and infrastructure. Without such a system, determining the effectiveness of interventions such as antibiotic stewardship and chlorhexidine bathing will be hindered.
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Affiliation(s)
| | - Said Abusalem
- Health Watch, University of Louisville, Louisville, KY USA
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44
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Greenhow TL, Hung YY, Herz A. Bacteremia in Children 3 to 36 Months Old After Introduction of Conjugated Pneumococcal Vaccines. Pediatrics 2017; 139:peds.2016-2098. [PMID: 28283611 DOI: 10.1542/peds.2016-2098] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/13/2017] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND AND OBJECTIVES In June 2010, Kaiser Permanente Northern California replaced all 7-valent pneumococcal conjugate vaccine (PCV7) vaccines with the 13-valent pneumococcal conjugate vaccine (PCV13). Our objectives were to compare the incidence of bacteremia in children 3 to 36 months old by 3 time periods: pre-PCV7, post-PCV7/pre-PCV13, and post-PCV13. METHODS We designed a retrospective review of the electronic medical records of all blood cultures collected on children 3 to 36 months old at Kaiser Permanente Northern California from September 1, 1998 to August 31, 2014 in outpatient clinics, in emergency departments, and in the first 24 hours of hospitalization. RESULTS During the study period, 57 733 blood cultures were collected in the population of children 3 to 36 months old. Implementation of routine immunization with the pneumococcal conjugate vaccine resulted in a 95.3% reduction of Streptococcus pneumoniae bacteremia, decreasing from 74.5 to 10 to 3.5 per 100 000 children per year by the post-PCV13 period. As pneumococcal rates decreased, Escherichia coli, Salmonella spp, and Staphylococcus aureus caused 77% of bacteremia. Seventy-six percent of all bacteremia in the post-PCV13 period occurred with a source. CONCLUSIONS In the United States, routine immunizations have made bacteremia in the previously healthy toddler a rare event. As the incidence of pneumococcal bacteremia has decreased, E coli, Salmonella spp, and S aureus have increased in relative importance. New guidelines are needed to approach the previously healthy febrile toddler in the outpatient setting.
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Affiliation(s)
- Tara L Greenhow
- Division of Infectious Diseases, Department of Pediatrics, Kaiser Permanente Northern California, San Francisco, California;
| | - Yun-Yi Hung
- Division of Research, Kaiser Permanente Northern California, Oakland, California; and
| | - Arnd Herz
- Division of Infectious Diseases, Department of Pediatrics, Kaiser Permanente Northern California, Hayward, California
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Bradford BD, Macias D, Liu YF, Inman JC, Dyleski RA. Utility of nasal swab and age in detecting methicillin-resistant Staphylococcus aureus in pediatric head and neck abscesses. Laryngoscope 2017; 127:2407-2412. [PMID: 28271495 DOI: 10.1002/lary.26535] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 12/27/2016] [Accepted: 01/23/2017] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To identify risk factors associated with the presence of methicillin-resistant Staphylococcus aureus (MRSA) in surgical cultures taken from incision and drainage (I&D) of head and neck abscesses in the pediatric population. STUDY DESIGN Retrospective case series. METHODS All patients under 18 years of age with a head and neck abscess requiring I&D from 2009 to 2015 were reviewed. MRSA nasal swab cultures were taken from all patients upon hospitalization. Surgical cultures were obtained from all patients and correlated with MRSA nasal swab results. Univariate and multivariate logistic regression was performed, and odds ratios (ORs) along with descriptive statistics were analyzed. RESULTS Of a total of 272 patients, there were 68 (25%) MRSA-positive abscesses. The majority (86.8%) of these abscesses were in children under 2 years of age. Overall, 12 (4.4%) presented with positive admission MRSA nasal swabs. Of these, 91.7% had MRSA-positive abscess cultures. Decreasing age in years showed an OR of 1.650 (P < 0.001) for MRSA-positive abscess, with children less than 1 year old having the highest OR of 10.74 (P < 0.001). CONCLUSION Younger age and MRSA nasal colonization were two statistically significant risk factors for developing an MRSA abscess of the head and neck. This study demonstrates a high positive predictive value for MRSA-positive neck abscesses when nasal swab screenings were MRSA-positive (91.7%). Children under 2 years of age-especially those under 1 year of age-or those with MRSA nasal colonization can be considered a high-risk population that may benefit from empiric antibiotics against MRSA for head and neck abscesses. LEVEL OF EVIDENCE 4. Laryngoscope, 127:2407-2412, 2017.
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Affiliation(s)
- Benjamin D Bradford
- Department of Otolaryngology-Head & Neck Surgery, Loma Linda University Medical Center, Loma Linda, California, U.S.A
| | - David Macias
- Loma Linda University School of Medicine, Loma Linda, California, U.S.A
| | - Yuan F Liu
- Department of Otolaryngology-Head & Neck Surgery, Loma Linda University Medical Center, Loma Linda, California, U.S.A
| | - Jared C Inman
- Department of Otolaryngology-Head & Neck Surgery, Loma Linda University Medical Center, Loma Linda, California, U.S.A
| | - Robin A Dyleski
- Department of Otolaryngology-Head & Neck Surgery, Loma Linda University Medical Center, Loma Linda, California, U.S.A
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Bradley J, Glasser C, Patino H, Arnold SR, Arrieta A, Congeni B, Daum RS, Kojaoghlanian T, Yoon M, Anastasiou D, Wolf DJ, Bokesch P. Daptomycin for Complicated Skin Infections: A Randomized Trial. Pediatrics 2017; 139:peds.2016-2477. [PMID: 28202770 DOI: 10.1542/peds.2016-2477] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/09/2016] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Complicated skin and skin structure infections (cSSSI) are common in children. Due to safety and resistance issues with recommended agents, new treatment options would be advantageous. METHODS Multicenter, evaluator-blinded clinical trial. Patients 1 to 17 years old with cSSSI caused by Gram-positive pathogens were randomized 2:1 to intravenous daptomycin or standard-of-care (SOC) treatment for ≤14 days. Daptomycin was administered once daily with dosing by patient age: 12 to 17 years, 5 mg/kg; 7 to 11 years, 7 mg/kg; 2 to 6 years, 9 mg/kg; 12 to 23 months, 10 mg/kg. The primary objective was to evaluate daptomycin safety. The secondary objective was to assess the efficacy of daptomycin compared with SOC. The intent-to-treat (ITT) population consisted of all randomized patients with any dose of study drug. RESULTS The ITT population comprised 257 daptomycin and 132 SOC patients (primarily clindamycin or vancomycin); 35% had confirmed methicillin-resistant Staphylococcus aureus. The most common adverse events were diarrhea (7% daptomycin, 5% SOC) and increased creatine phosphokinase (6% daptomycin, 5% SOC). The proportions of safety population patients with treatment-related adverse events were similar between the daptomycin (14%) and SOC (17%) groups. Clinical success rates (blinded evaluator-assessed complete/partial resolution of cSSSI signs and symptoms 7-14 days after end-of-treatment) in the ITT population were also similar for the daptomycin (91%) and SOC groups. CONCLUSIONS Once-daily daptomycin was well tolerated, with safety and efficacy comparable to SOC in children/adolescents with cSSSI caused by Gram-positive pathogens, including community-acquired methicillin-resistant S aureus.
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Affiliation(s)
- John Bradley
- Division of Infectious Diseases, Department of Pediatrics, University of California San Diego, San Diego, California; .,Rady Children's Hospital, San Diego, California
| | | | | | - Sandra R Arnold
- University of Tennessee Health Science Center, Le Bonheur Children's Hospital, Memphis, Tennessee
| | | | | | - Robert S Daum
- MRSA Research Center, Department of Pediatrics, University of Chicago, Chicago, Illinois; and
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See I, Wesson P, Gualandi N, Dumyati G, Harrison LH, Lesher L, Nadle J, Petit S, Reisenauer C, Schaffner W, Tunali A, Mu Y, Ahern J. Socioeconomic Factors Explain Racial Disparities in Invasive Community-Associated Methicillin-Resistant Staphylococcus aureus Disease Rates. Clin Infect Dis 2017; 64:597-604. [PMID: 28362911 PMCID: PMC5656382 DOI: 10.1093/cid/ciw808] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 12/27/2016] [Indexed: 01/30/2023] Open
Abstract
Background Invasive community-associated methicillin-resistant Staphylococcus aureus (MRSA) incidence in the United States is higher among black persons than white persons. We explored the extent to which socioeconomic factors might explain this racial disparity. Methods A retrospective cohort was based on the Centers for Disease Control and Prevention's Emerging Infections Program surveillance data for invasive community-associated MRSA cases (isolated from a normally sterile site of an outpatient or on hospital admission day ≤3 in a patient without specified major healthcare exposures) from 2009 to 2011 in 33 counties of 9 states. We used generalized estimating equations to determine census tract-level factors associated with differences in MRSA incidence and inverse odds ratio-weighted mediation analysis to determine the proportion of racial disparity mediated by socioeconomic factors. Results Annual invasive community-associated MRSA incidence was 4.59 per 100000 among whites and 7.60 per 100000 among blacks (rate ratio [RR], 1.66; 95% confidence interval [CI], 1.52-1.80). In the mediation analysis, after accounting for census tract-level measures of federally designated medically underserved areas, education, income, housing value, and rural status, 91% of the original racial disparity was explained; no significant association of black race with community-associated MRSA remained (RR, 1.05; 95% CI, .92-1.20). Conclusions The racial disparity in invasive community-associated MRSA rates was largely explained by socioeconomic factors. The specific factors that underlie the association between census tract-level socioeconomic measures and MRSA incidence, which may include modifiable social (eg, poverty, crowding) and biological factors (not explored in this analysis), should be elucidated to define strategies for reducing racial disparities in community-associated MRSA rates.
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Affiliation(s)
- Isaac See
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Paul Wesson
- Division of Epidemiology, School of Public Health, University of California, Berkeley, USA
| | - Nicole Gualandi
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Ghinwa Dumyati
- University of Rochester Medical Center, Rochester, New York, USA
| | - Lee H Harrison
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | | | - Joelle Nadle
- California Emerging Infections Program, Oakland, USA
| | - Susan Petit
- Connecticut Department of Public Health, Hartford, USA
| | | | | | - Amy Tunali
- Georgia Emerging Infections Program, Atlanta, USA
| | - Yi Mu
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Jennifer Ahern
- Division of Epidemiology, School of Public Health, University of California, Berkeley, USA
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Molloy L. Methicillin-Resistant Staphylococcus aureus: A Pharmacotherapy Primer. J Pediatr Health Care 2017; 31:246-256. [PMID: 28215220 DOI: 10.1016/j.pedhc.2016.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 12/19/2016] [Accepted: 12/19/2016] [Indexed: 11/19/2022]
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Roediger JC, Outhred AC, Shadbolt B, Britton PN. Paediatric Staphylococcus aureus bacteraemia: A single-centre retrospective cohort. J Paediatr Child Health 2017; 53:180-186. [PMID: 27566273 DOI: 10.1111/jpc.13329] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 05/06/2016] [Accepted: 06/19/2016] [Indexed: 11/30/2022]
Abstract
AIM We aimed to describe the clinical epidemiology of Staphylococcus aureus bacteraemia (SAB) at a large, tertiary/quaternary children's hospital in Australia. METHODS We performed a retrospective chart review of SAB cases at the Children's Hospital at Westmead (CHW) over 5 years; 2006-2011. We compared frequency, clinical profile and outcomes of SAB with published data from CHW; 1994-1998. We compared health-care associated with community-associated (HCA-SAB and CA-SAB; defined epidemiologically) and methicillin-resistant with methicillin susceptible S. aureus (MRSA and MSSA). RESULTS We identified 174 episodes of paediatric SAB with an average annual admission rate of 1.3/1000 which has not increased compared with a decade earlier. Half of the cases (49%) were CA-SAB; 18% were MRSA. The proportion of CA-MRSA bacteraemia (22%) has increased. The proportion of SAB associated with central venous access devices (CVADs; 40%) has increased. CA-SAB cases were more likely to present with a tissue focus of disease (e.g. osteo-articular, pneumonia) and often required surgery. HCA-SAB less frequently required surgery, a minority is MRSA, and vascular device intervention (removal, sterilisation) is common. Six cases (4%) of infective endocarditis (IE) were identified; three with a history of congenital heart disease, two with CVADs in situ. There were no deaths in this cohort. CONCLUSIONS Over an 18-year period, the proportion of SAB due to CA-MRSA and SAB associated with CVADs has increased. Categorisation of SAB as HCA and CA reveals two broad phenotypes of paediatric SAB. SAB in children is infrequently associated with IE. The health-care burden of paediatric SAB is considerable', but mortality is low.
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Affiliation(s)
- Jessica C Roediger
- Department of General Medicine, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Alexander C Outhred
- Department of Infectious Diseases and Microbiology, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Bruce Shadbolt
- Clinical Epidemiology Unit, Canberra Hospital, Canberra, Australian Capital Territory, Australia
| | - Philip N Britton
- Department of Infectious Diseases and Microbiology, The Children's Hospital at Westmead, Sydney, New South Wales, Australia.,Discipline of Paediatrics and Child Health, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
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Abstract
STUDY DESIGN Single-institution, retrospective case series. OBJECTIVE To determine whether the microbiology of deep surgical site infections (SSIs) after spinal fusion surgery for deformity has changed over the last decade at our institution. SUMMARY OF BACKGROUND DATA SSI after pediatric spinal deformity surgery results in significantly increased patient morbidity and health care costs. Although risk factors are multifactorial, prophylactic and treatment antibiotic coverage is based in part on historical epidemiologic data, which may evolve over time. METHODS This study represents a retrospective review of clinical and microbiology records of patients less than 21 years old who underwent spinal deformity surgery at a single institution between 2000 and 2012. Patients were included who underwent index surgery at our institution and developed a deep SSI. Patients with growth-preserving spine constructs were excluded. RESULTS The overall incidence of deep SSI was 3.6% (39/1094). The incidence of deep SSI following primary surgery was 3.3% (34/1034) and 8.3% (5/60) following revision surgery. The incidence of deep SSI varied by primary diagnosis: idiopathic (1.0%), neuromuscular (14.3%), syndromic (5.3%), congenital (5.7%), and kyphosis (0.0%). The most common inciting pathogens were Staphylococcus epidermidis (26%), methicillin-sensitive Staphylococcus aureus (MSSA, 18%), Propionibacterium acnes (P. acnes; 18%), and Escherichia coli (18%). Sixteen of the 18 (89%) gram-negative infections occurred in neuromuscular patients (P = 0.006). Between 2000 and 2006 and between 2007 and 2012, MSSA occurred in 2/18 (11%) and 5/21 (24%) of cases (P = 0.41), methicillin-resistant S. aureus occurred in 1/18 (6%) and 3/21 (14%) (P = 0.61), and P. acnes occurred in 3/18 (17%) and 4/21 (19%) (P = 1.0). CONCLUSION The epidemiology of deep SSI following spinal fusion for deformity in pediatric patients at our institution has not changed significantly during 13 years. Prophylactic antibiotic coverage for both gram-positive and gram-negative organisms may be indicated for patients with primary neuromuscular diagnoses. LEVEL OF EVIDENCE 4.
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