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Taggart M, Langworthy K, Hui S, Boyder C, Fulurija A, Morici M, Raby E, Manning L. Serological Responses to Streptococcus pyogenes Vaccine Candidate Antigens Suggests That Streptococcus dysgalactiae Is the Predominant Cause of Lower Limb Cellulitis. Open Forum Infect Dis 2024; 11:ofae272. [PMID: 38872850 PMCID: PMC11171425 DOI: 10.1093/ofid/ofae272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 05/23/2024] [Indexed: 06/15/2024] Open
Abstract
Background A future Streptococcus pyogenes (Strep A) vaccine will ideally prevent a significant burden of lower limb cellulitis; however, natural immune responses to proposed vaccine antigens following an episode of cellulitis remain uncharacterized. Methods We enrolled 63 patients with cellulitis and 26 with invasive beta hemolytic streptococci infection, using a multiplexed assay to measure immunoglobulin G against Strep A vaccine candidate antigens, including: streptolysin O (SLO), deoxyribonuclease B (DNB), group A carbohydrate (GAC), C5a peptidase (ScpA), cell envelope proteinase (SpyCEP), and adhesion and division protein (SpyAD). Responses in the invasive cohort were used to predict the infecting etiology in the cellulitis cohort. Results Of 41 patients with cellulitis and paired serological samples, 68.3% had evidence of beta hemolytic streptococci infection by conventional anti-SLO and/or anti-DNB criteria. A positive serological response to at least 1 of the tested antigens was seen in 78.0% of the cellulitis cohort. Individually, anti-SLO (58.5%), anti-SpyAD (46.3%), and anti-ScpA (39.0%) were the most common. Based on principal component analysis, increases in these 3 antibodies, without responses to DNB, GAC, and SpyCEP characterized Streptococcus dysgalactiae subspecies equisimilis (SDSE) infection. Conclusions SDSE appears to be the predominant cause of lower limb cellulitis. Effective Strep A vaccines incorporating antigens that provide additional cross protection against SDSE may prevent a significant burden of lower limb cellulitis.
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Affiliation(s)
- Michael Taggart
- Department of Infectious Diseases, Fiona Stanley Fremantle Hospitals Group, Murdoch Western Australia, Australia
| | - Kristyn Langworthy
- Department of Infectious Diseases, Fiona Stanley Fremantle Hospitals Group, Murdoch Western Australia, Australia
| | - Siong Hui
- Department of Infectious Diseases, Fiona Stanley Fremantle Hospitals Group, Murdoch Western Australia, Australia
| | - Conchita Boyder
- Department of Microbiology, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Alma Fulurija
- Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
| | - Michael Morici
- Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
| | - Edward Raby
- Department of Infectious Diseases, Fiona Stanley Fremantle Hospitals Group, Murdoch Western Australia, Australia
- Department of Microbiology, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
- Medical School, Faculty of Health and Medical Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Laurens Manning
- Department of Infectious Diseases, Fiona Stanley Fremantle Hospitals Group, Murdoch Western Australia, Australia
- Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
- Medical School, Faculty of Health and Medical Sciences, The University of Western Australia, Crawley, Western Australia, Australia
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From the Cochrane Library: Interventions for the prevention of recurrent erysipelas and cellulitis. J Am Acad Dermatol 2022; 87:e157-e158. [PMID: 35680001 DOI: 10.1016/j.jaad.2022.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/28/2022] [Accepted: 06/01/2022] [Indexed: 11/20/2022]
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Yadav K, Krzyzaniak N, Alexander C, Scott AM, Clark J, Glasziou P, Keijzers G. The impact of antibiotics on clinical response over time in uncomplicated cellulitis: a systematic review and meta-analysis. Infection 2022; 50:859-871. [PMID: 35593975 DOI: 10.1007/s15010-022-01842-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 04/26/2022] [Indexed: 11/05/2022]
Abstract
PURPOSE Antibiotic treatment of uncomplicated cellulitis is highly variable with respect to agent, dose, and route of administration. As there is uncertainty about optimal/appropriate time to reassess, we aimed to assess time to clinical response. METHODS We conducted a systematic review of randomized controlled trials reporting clinical response of uncomplicated cellulitis to antibiotic treatment over multiple timepoints. PubMed, Embase, CENTRAL, WHO ICTRP, and clinicaltrials.gov were searched from inception to June 2021 without language restrictions. The primary outcome was time to clinical response. Other outcomes were components of clinical response (pain, severity score, redness, edema measured at ≥ 2 timepoints) and the proportion of patients with treatment failure. We performed a pooled estimate of the average time to clinical response together with 95% confidence intervals using a random effects model. RESULTS We included 32 randomized controlled trials (n = 13,576 participants). The mean time to clinical response was 1.68 days (95%CI 1.48-1.88; I2 = 76%). The response to treatment for specific components was as follows: ~ 50% reduction of pain and severity score by day 5, a ~ 33% reduction in area of redness by day 2-3, and a 30-50% reduction of proportion of patients with edema by day 2-4. Treatment failure was variably defined with an overall failure rate of 12% (95%CI 9-16%). CONCLUSION The best available data suggest the optimal time to clinical reassessment is between 2 and 4 days, but this must be interpreted with caution due to considerable heterogeneity and small number of included studies.
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Affiliation(s)
- Krishan Yadav
- Clinical Epidemiology Unit, Department of Emergency Medicine, University of Ottawa, 1053 Carling Avenue, F660b, Ottawa, ON, K1Y4E9, Canada. .,Ottawa Hospital Research Institute, Ottawa, ON, Canada.
| | - Natalia Krzyzaniak
- Institute for Evidence-Based Healthcare, Bond University, Robina, Australia
| | - Charlotte Alexander
- Department of Emergency Medicine, Gold Coast University Hospital, Gold Coast, QLD, Australia.,Faculty of Health Sciences and Medicine, Bond University, Gold Coast, QLD, Australia
| | - Anna Mae Scott
- Institute for Evidence-Based Healthcare, Bond University, Robina, Australia
| | - Justin Clark
- Institute for Evidence-Based Healthcare, Bond University, Robina, Australia
| | - Paul Glasziou
- Institute for Evidence-Based Healthcare, Bond University, Robina, Australia
| | - Gerben Keijzers
- Department of Emergency Medicine, Gold Coast University Hospital, Gold Coast, QLD, Australia.,Faculty of Health Sciences and Medicine, Bond University, Gold Coast, QLD, Australia.,School of Medicine, Griffith University, Gold Coast, QLD, Australia
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Watkins RR, David MZ. Approach to the Patient with a Skin and Soft Tissue Infection. Infect Dis Clin North Am 2021; 35:1-48. [PMID: 33494872 DOI: 10.1016/j.idc.2020.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The diagnosis of a skin and soft tissue infection (SSTI) requires careful attention to a patient's history, physical examination, and diagnostic test results. We review for many bacterial, viral, fungal, and parasitic pathogens that cause SSTIs the clues for reaching a diagnosis, including reported past medical history, hobbies and behaviors, travel, insect bites, exposure to other people and to animals, environmental exposures to water, soil, or sand, as well as the anatomic site of skin lesions, their morphology on examination, and their evolution over time. Laboratory and radiographic tests are discussed that may be used to confirm a specific diagnosis.
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Affiliation(s)
- Richard R Watkins
- Division of Infectious Diseases, Cleveland Clinic Akron General, 224 West Exchange Street, Akron, OH 44302, USA; Department of Medicine, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Michael Z David
- Division of Infectious Diseases, Department of Medicine, University of Pennsylvania, Blockley Hall 707, Philadelphia, PA 19104, USA; Department of Epidemiology, Biostatistics and Informatics, University of Pennsylvania, Philadelphia, PA, USA.
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Cross ELA, Jordan H, Godfrey R, Onakpoya IJ, Shears A, Fidler K, Peto TEA, Walker AS, Llewelyn MJ. Route and duration of antibiotic therapy in acute cellulitis: A systematic review and meta-analysis of the effectiveness and harms of antibiotic treatment. J Infect 2020; 81:521-531. [PMID: 32745638 DOI: 10.1016/j.jinf.2020.07.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Compared with guideline recommendations, antibiotic overuse is common in treating cellulitis. We conducted a systematic review and meta-analyses on antibiotic route and duration of treatment for cellulitis in adults and children. METHODS We searched MEDLINE, EMBASE and trial registries from inception to Dec 11, 2019 for interventional and observational studies of antibiotic treatment for cellulitis. Exclusions included case series/reports, pre-septal/orbital cellulitis and non-English language articles. Random-effects meta-analyses were used to produce summary relative risk (RR) estimates for our primary outcome of clinical response. PROSPERO CRD42018100602. RESULTS We included 47/8423 articles, incorporating data from eleven trials (1855 patients) in two meta-analyses. The overall risk of bias was moderate. Only two trials compared the same antibiotic agent in each group. We found no evidence of difference in clinical response rates for antibiotic route or duration (RR(oral:IV)=1.12, 95%CI 0.98-1.27, I2=32% and RR(shorter:longer)=0.99, 95%CI 0•96-1.03, I2 = 0%, respectively). Findings were consistent in observational studies. Follow-up data beyond 30 days were sparse. CONCLUSIONS The evidence base for antibiotic treatment decisions in cellulitis is flawed by biased comparisons, short follow-up and lack of data around harms of antibiotic overuse. Future research should focus on developing patient-tailored antibiotic prescribing for cellulitis to reduce unnecessary antibiotic use.
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Affiliation(s)
- Elizabeth L A Cross
- Department of Global Health and Infection, Brighton and Sussex Medical School, University of Sussex, Falmer, East Sussex BN1 9PS, UK; Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
| | - Harriet Jordan
- Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
| | - Rebecca Godfrey
- Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
| | - Igho J Onakpoya
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Annalie Shears
- Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
| | - Katy Fidler
- Department of Global Health and Infection, Brighton and Sussex Medical School, University of Sussex, Falmer, East Sussex BN1 9PS, UK; Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
| | - Timothy E A Peto
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK; Oxford University Hospitals NHS Foundation Trust, Oxford, UK; NIHR Biomedical Centre, Oxford, UK
| | - A Sarah Walker
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK; Oxford University Hospitals NHS Foundation Trust, Oxford, UK; NIHR Biomedical Centre, Oxford, UK
| | - Martin J Llewelyn
- Department of Global Health and Infection, Brighton and Sussex Medical School, University of Sussex, Falmer, East Sussex BN1 9PS, UK; Brighton and Sussex University Hospitals NHS Trust, Brighton, UK.
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Brindle RJ, O’Neill LA, Williams OM. Risk, Prevention, Diagnosis, and Management of Cellulitis and Erysipelas. CURRENT DERMATOLOGY REPORTS 2020. [DOI: 10.1007/s13671-020-00287-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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