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Background: In the ACCESS trial, the addition of clarithromycin to standard-of-care antibiotics (SoC) enhanced early clinical response and attenuated the inflammatory burden in adults with community-acquired pneumonia (CAP) requiring hospitalisation. A post-hoc analysis was performed to investigate the benefit in specific subgroups., Methods: The primary endpoint comprised two conditions to be met during the first 72 h: ≥50% decrease in respiratory symptom severity score; and any of ≥30% decrease in sequential organ failure assessment score and favourable change in the kinetics of procalcitonin (PCT, defined as ≥80% PCT decrease or PCT <0.25 ng/mL). In this exploratory post-hoc analysis, achievement of the study composite primary endpoint was compared between the two treatment groups within subsets differentiated by demographic characteristics, comorbidities, CAP severity, baseline laboratory findings and corticosteroid co-administration. The impact of clarithromycin treatment on the need for mechanical ventilation (MV) in all subgroups was also analysed., Results: The addition of clarithromycin significantly increased the proportion of patients achieving the primary endpoint across all subgroups and decreased the need for MV in 19 out of the 37 subgroups studied. For instance, the primary endpoint was attained in 32.7% of placebo-treated patients and in 67% of clarithromycin-treated patients with CURB-65 score ≥2 (P<0.0001), whereas MV was required in 18.8% and 7.4% of patients, respectively (P=0.022). The addition of corticosteroids alone was not as clinically advantageous as the use of clarithromycin alone, when added to SoC., Conclusion: Adding clarithromycin to SoC in the ACCESS trial achieved early clinical anti-inflammatory responses and decreased the need for MV in subgroups of hospitalised patients with CAP., Competing Interests: Declarations Funding: The ACCESS trial was sponsored by the Hellenic Institute for the Study of Sepsis (HISS) and financially supported by Abbot Products Operations (Abbott). HISS oversaw the study design, implementation, data analysis, interpretation, and determination regarding publication. The funding source, Abbott, did not take part in the design, execution, analysis, or interpretation of the study, nor did it influence the decision to publish. Publication administration was facilitated by Hughes associates, Oxford, UK. Competing Interests: K. Akinosoglou reports receiving honoraria and consulting fees from healthcare companies, including MSD, Pfizer, 3M Hellas, GSK/ViiV and Gilead. I. Papanikolaou has received honoraria or served as PI for studies from Boehringer-ingelheim, GlaxoSmithKline and AstraZeneca. H. Milionis reports receiving honoraria, consulting fees and non-financial support from healthcare companies, including Amgen, Angelini, Bayer, Mylan, MSD, Pfizer and Servier. E. J. Giamarellos-Bourboulis has received honoraria from Abbott Products Operations, bioMérieux, GSK, UCB, Sobi AB and ThermoFisher Brahms GmbH; independent educational grants from Abbott Products Operations, AbbVie, bioMérieux Inc, Johnson & Johnson, InCyte, MSD, Novartis, UCB, Sanofi and Sobi; and the Horizon 2020 European Grants ImmunoSep and RISCinCOVID and the Horizon Health grants EPIC-CROWN-2, POINT and Homi-Lung (granted to the Hellenic Institute for the Study of Sepsis). The other authors do not declare any conflict of interest. Ethical Approval: The study was approved by the National Ethics Committee of Greece. Approvals are provided in the Methods section. Sequence Information: Not applicable Randomised Controlled Trial: ClinicalTrials.gov NCT04724044, (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)

Patients with sepsis differ in their clinical presentations and immune dysregulation in response to infection, but the fundamental processes that determine this heterogeneity remain elusive. Here, we aim to understand which types of immune dysregulation characterize patients with sepsis. To that end, we investigate sepsis pathogenesis in the context of two transcriptional states: one represents the immune response to eliminate pathogens (resistance, R) and the other is associated with systemic inflammation (SI). We find that patients with sepsis share a molecular fingerprint of a low R-to-SI balance-i.e., a low R relative to the level of SI. Differences between patients with sepsis are explained by the wide diversity of R and SI states that fall under this fingerprint, such as patients with high SI, patients with low R, or both. We show how this R/SI framework can be used to guide patient stratification that is relevant to disease prognosis and management, outperforming existing classifications of sepsis., Competing Interests: Declaration of interests Tel Aviv University has filed a patent application on markers of resistance and systemic inflammation and uses thereof with I.G.-V., R.B.-L., G.Y., M.G.N., and E.J.G.-B. as inventors (PCT/IL2024/050850), which has been filed in the Israel PCT Receiving Office., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)

Objective: To investigate the metabolomic profiles associated with different immune activation states in sepsis patients., Design: Subgroup analysis of the PROVIDE (a Personalized Randomized trial of Validation and restoration of Immune Dysfunction in severe infections and Sepsis) prospective clinical study., Setting: Results of the PROVIDE study showed that patients with sepsis may be classified into three states of immune activation: 1) macrophage-activation-like syndrome (MALS) characterized by hyperinflammation, sepsis-induced immunoparalysis, and 3) unclassified or intermediate patients without severe immune dysregulation., Patients or Subjects: Two hundred ten patients from 14 clinical sites in Greece meeting the Sepsis-3 definitions with lung infection, acute cholangitis, or primary bacteremia., Interventions: During our comparison, we did not perform any intervention., Measurements and Main Results: Untargeted metabolomics analysis was performed on plasma samples from 210 patients (a total of 1394 products). Differential abundance analysis identified 221 significantly different metabolites across the immune states. Metabolites were enriched in pathways related to ubiquinone biosynthesis, tyrosine metabolism, and tryptophan metabolism when comparing MALS to immunoparalysis and unclassified patients. When comparing MALS to unclassified, 312 significantly different metabolites were found, and pathway analysis indicated enrichment in multiple pathways. Comparing immunoparalysis to unclassified patients revealed only two differentially regulated metabolites., Conclusions: Findings suggest distinct metabolic dysregulation patterns associated with different immune dysfunctions in sepsis: the strongest metabolic dysregulation is associated with MALS., Competing Interests: Dr. Dalekos is an advisor or lecturer for Pfizer, Roche, Sanofi, and Sobi and he received research grants from Gilead and has served as principal investigator in studies for Gilead, Novo Nordisk, Genkyotex, Regulus Therapeutics Inc, Tiziana Life Sciences, Bayer, Astellas, Pfizer, Amyndas Pharmaceuticals, CymaBay Therapeutics Inc., Sobi, and Intercept Pharmaceuticals. Dr. Netea is supported by an European Research Council Advanced Grant (number 833247) and a Spinoza grant from the Netherlands Organization for Scientific Research. He is a scientific founder of TTxD, Lemba, and Biotrip and he has received independent educational grants from TTxD, GSK, Ono Pharma, and ViiV Healthcare. Dr. Giamarellos-Bourboulis has received honoraria from Abbott Products Operations, bioMérieux, ThermoFisherBrahms GmbH, GSK, InflaRx GmbH, Sobi, and XBiotech Inc; independent educational grants from Abbott Products Operations, AbbVie, bioMérieux Inc, Johnson & Johnson, MSD, Novartis, Sobi, and UCB; and funding from the Horizon2020 Marie-Curie Project European Sepsis Academy (granted to the National and Kapodistrian University of Athens), the Horizon 2020 European Grants ImmunoSep and RISCinCOVID (granted to the Hellenic Institute for the Study of Sepsis), and the Horizon Health European Grant EPIC-CROWN-2 (granted to the Hellenic Institute for the Study of Sepsis). Dr. Kranidioti’s institutions received funding from The Hellenic Institute for the Study of Sepsis, bioMerieux, and Spinoza grant of the Netherlands Organization for Scientific Research. The remaining authors have disclosed that they do not have any potential conflicts of interest., (Copyright © 2024 by the Society of Critical Care Medicine and Wolters Kluwer Health, Inc. All Rights Reserved.)

Background: Addition of macrolide antibiotics to β-lactam antibiotics for the treatment of patients in hospital with community-acquired pneumonia is based on results from observational studies and meta-analyses rather than randomised clinical trials. We investigated if addition of the macrolide clarithromycin to treatment with a β-lactam antibiotic in this population could improve early clinical response-the new regulatory endpoint for community-acquired pneumonia-and explored the possible contribution of modulation of the inflammatory host response to that outcome., Methods: The ACCESS trial was a phase 3 prospective, double-blind, randomised controlled trial, in which adults in hospital with community-acquired pneumonia who had systemic inflammatory response syndrome, Sequential Organ Failure Assessment (SOFA) score of 2 or more, and procalcitonin 0·25 ng/mL or more were enrolled in 18 internal medicine departments of public Greek hospitals. Patients were randomly assigned (1:1) by computer-generated block randomisation to standard of care medication (including intravenous administration of a third-generation cephalosporin or intravenous administration of β-lactam plus β-lactamase inhibitor combination) plus either oral placebo or oral clarithromycin 500 mg twice daily for 7 days. Investigators, staff, and patients were masked to group allocation. The primary composite endpoint required that patients fulfilled both of the following conditions after 72 hours (ie, day 4 of treatment): (1) decrease in respiratory symptom severity score of 50% or more as an indicator of early clinical response and (2) decrease in SOFA score of at least 30% or favourable procalcitonin kinetics (defined as ≥80% decrease from baseline or procalcitonin <0·25 ng/mL), or both, as an indicator of early inflammatory response. Participants who were randomly assigned and received allocated treatment were included in the primary analysis population. This trial is complete and is registered with the EU Clinical Trials Register (2020-004452-15) and ClinicalTrials.gov (NCT04724044)., Findings: Patients were enrolled between Jan 25, 2021, and April 11, 2023, and 278 individuals were randomly allocated to receive standard of care in combination with either clarithromycin (n=139) or placebo (n=139). 134 patients in the clarithromycin group (five withdrew consent) and 133 patients in the placebo group (six withdrew consent) were included in the analysis of the primary endpoint. The primary endpoint was met in 91 (68%) patients in the clarithromycin group and 51 (38%) patients in the placebo group (difference 29·6% [95% CI 17·7-40·3]; odds ratio [OR] 3·40 [95% CI 2·06-5·63]; p<0·0001). Serious treatment-emergent adverse events (TEAEs) occurred in 58 (43%) patients in the clarithromycin group and 70 (53%) patients in the placebo group (difference 9·4% [95% CI -2·6 to 20·9]; OR 0·67 [95% CI 0·42 to 1·11]; p=0·14). None of the serious TEAEs was judged to be related to treatment assignment., Interpretation: Addition of clarithromycin to standard of care enhances early clinical response and attenuates the inflammatory burden of community-acquired pneumonia. The mechanism of benefit is associated with changes in the immune response. These findings suggest the importance of adding clarithromycin to β-lactams for treatment of patients in hospital with community-acquired pneumonia to achieve early clinical response and early decrease of the inflammatory burden., Funding: Hellenic Institute for the Study of Sepsis and Abbott Products Operations., Competing Interests: Declaration of interests EJG-B has received honoraria from Abbott Products Operations, bioMérieux, Brahms, GSK, InflaRx, Swedish Orphan Biovitrum, and Xbiotech; independent educational grants from Abbott Products Operations, bioMérieux, InflaRx, Johnson & Johnson, MSD, UCB, and Swedish Orphan Biovitrum; and funding from the Horizon 2020 European Grants ImmunoSep and RISCinCOVID and the Horizon Health grant EPIC-CROWN-2 (granted to the Hellenic Institute for the Study of Sepsis). GP has received honoraria or consulting fees from AstraZeneca, Gilead, GSK, Menarini, MSD, Norma, Pfizer, and Sobi, and research grants from the University of Minnesota/University College London, the Hellenic Institute for the Study of Sepsis, Bausch, Roche, Xenothera, FabNTech, and Pfizer. ICP has received honoraria or served as principal investigator for studies from Boehringer Ingelheim, GlaxoSmithKline, and AstraZeneca. HM reports receiving honoraria, consulting fees, and non-financial support from health-care companies, including Amgen, Angelini, Bayer, Mylan, MSD, Pfizer, and Servier. GND is an advisor or lecturer for Pfizer, Roche, Sanofi, and Sobi; has received research grants from Gilead; and has served as principal investigator in studies for Gilead, Novo Nordisk, Genkyotex, Regulus Therapeutics, Tiziana Life Sciences, Bayer, Astellas, Pfizer, Amyndas Pharmaceuticals, CymaBay Therapeutics, Sobi, and Intercept Pharmaceuticals. KAk reports receiving honoraria and consulting fees from health-care companies, including Angelini, MSD, Pfizer, Swedish Orphan Biovitrum, 3M hellas, GSK/ViiV, and Gilead. All other authors declare no competing interests., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

Introduction: The aim was to assess the performance of a blood assay combining measurements of MxA (myxovirus resistance protein A) and CRP (C-reactive protein) to differentiate viral from bacterial respiratory infections., Methods: In a prospective study, MxA and CRP were measured in the blood by the AFIAS panel in adults admitted with respiratory infection. Patients were split into discovery and validation cohorts. Final diagnosis was adjudicated by a panel of experts. Microbiology-confirmed cases comprised the discovery cohort, and infections adjudicated as highly probable viral or bacterial comprised the validation cohort., Results: A total of 537 patients were analyzed: 136 patients were adjudicated with definitive viral infections and 131 patients with definitive bacterial infections. Using logistic regression analysis, an equation was developed to calculate the probability for bacterial infection using the absolute value of MxA and CRP. Calculated probability ≥ 0.5 and/or MxA to CRP ratio less than 2 applied as the diagnostic rule for bacterial infections. This rule provided 91.6% sensitivity and 90.4% negative predictive value for the diagnosis of bacterial infections. This diagnostic sensitivity was confirmed in the validation cohort. A MxA/CRP ratio less than 0.15 was associated with unfavorable outcome., Conclusion: The calculation of the probability for bacterial infection using MxA and CRP may efficiently discriminate between viral and bacterial respiratory infections., (© 2023. The Author(s).)

Background: The need for oral, cost-effective treatment for complicated skin and skin structure infections (cSSSIs) due to methicillin-resistant Staphylococcus aureus (MRSA) was addressed by the non-inferiority comparisons of oral minocycline plus rifampicin with linezolid., Methods: In the AIDA multicenter, open label, randomized, controlled clinical trial, hospitalized adults with cSSSI and documented MRSA were randomly assigned at a 2:1 ratio to either oral 600 mg rifampicin qd plus 100 mg minocycline bid or oral 600 mg linezolid bid for 10 days. The primary endpoint was the clinical cure rate in the clinically evaluable (CE) population at the test-of-cure visit (14 days). Non-inferiority was confirmed if the lower confidence limit (CI) did not fall below the accepted error margin of 15%. The study is registered with EudraCT number 2014-001276-56., Findings: 123 patients recruited between November 2014 and January 2017 were randomly assigned to treatment (81 patients to minocycline plus rifampicin and 42 patients to linezolid). Cure rates were 78.% (46/59, 90% CI 67.3-86.5) and 68.6% (24/35, 90% CI 53.4-81.3), respectively ( P  = 0.337). The percent difference in cure rates was 9.4% (90% CI -7.2 to 26.8%). Minocycline plus rifampicin combination was deemed non-inferior to linezolid as the lower CI was -7.2% i.e. smaller than the accepted error margin of -15%. Although statistically not significant, the overall rate of adverse events was higher in the linezolid group (47.6%, 20/42 versus 38.3%, 31/81)., Interpretation: Oral minocycline plus rifampicin was non-inferior to oral linezolid treatment providing alternative oral treatment for cSSSI., Funding: The EU Seventh Research Framework Programme., Competing Interests: Helen Sambatakou has received honoraria from MSD Greece, Elpen Hellas, Mylan Hellas and Pfizer Greece. E.J. Giamarellos-Bourboulis has received honoraria from Abbott CH, bioMérieux, Brahms GmbH, GSK, InflaRx GmbH, Sobi and XBiotech Inc; independent educational grants from Abbott CH, AxisShield, bioMérieux Inc, InflaRx GmbH, Johnson & Johnson, MSD, Sobi and XBiotech Inc.; and funding from the Horizon2020 Marie Skłodowska-Curie International Training Network “the European Sepsis Academy” (granted to the National and Kapodistrian University of Athens), and the Horizon 2020 European Grants ImmunoSep and RISCinCOVID (granted to the Hellenic Institute for the Study of Sepsis). Alasdair MacGowan has research grants/activities with the following: Merck, Shionogi, Venatorx, InfectoPharm, GSK, Bioversys, MRC (UK), NIHR (UK). All other authors declare no competing interests., (© 2022 The Authors.)

The state of immune activation may guide targeted immunotherapy in sepsis. In a double-blind, double-dummy randomized clinical study, 240 patients with sepsis due to lung infection, bacteremia, or acute cholangitis were subjected to measurements of serum ferritin and HLA-DR/CD14. Patients with macrophage activation-like syndrome (MALS) or immunoparalysis were randomized to treatment with anakinra or recombinant interferon-gamma or placebo. Twenty-eight-day mortality was the primary endpoint; sepsis immune classification was the secondary endpoint. Using ferritin >4,420 ng/mL and <5,000 HLA-DR receptors/monocytes as biomarkers, patients were classified into MALS (20.0%), immunoparalysis (42.9%), and intermediate (37.1%). Mortality was 79.1%, 66.9%, and 41.6%, respectively. Survival after 7 days with SOFA score decrease was achieved in 42.9% of patients of the immunotherapy arm and 10.0% of the placebo arm (p = 0.042). Three independent immune classification strata are recognized in sepsis. MALS and immunoparalysis are proposed as stratification for personalized adjuvant immunotherapy. Clinicaltrials.gov registration NCT03332225., Competing Interests: Declaration of interests G.D. has acted as Advisor/Lecturer for Abbvie, Bristol-Myers Squibb, Gilead, Novartis, Roche, Amgen, MSD, Janssen, Ipsen, Genkyotex, Sobi, and Pfizer; has received grant support from Bristol-Myers Squib, Gilead, Roche, Janssen, Abbvie, and Bayer; and was or is currently principal investigator in national and international protocols sponsored by Abbvie, Bristol-Myers Squibb, Novartis, Gilead, Novo Nordisk, Genkyotex, Regulus Therapeutics Inc, Tiziana Life Sciences, Bayer, Astellas, Ipsen, Pfizer, Amyndas Pharamaceuticals, CymaBay Therapeutics Inc., and Roche. M.G.N. is supported by an ERC Advanced Grant (#833247) and a Spinoza grant of the Netherlands Organization for Scientific Research. He is a scientific founder of TTxD and has received independent educational grants from TTxD, GSK, Ono Pharma, and ViiV HealthCare. E.J.G.-B. has received honoraria from Abbott CH, bioMérieux, ThermoFisherBrahms GmbH, GSK, InflaRx GmbH, Sobi, and XBiotech Inc; independent educational grants from Abbott CH, AxisShield, bioMérieux Inc, InflaRx GmbH, Johnson & Johnson, MSD, Sobi, and XBiotech Inc.; and funding from the Horizon2020 Marie-Curie Project European Sepsis Academy (granted to the National and Kapodistrian University of Athens), the Horizon 2020 European Grants ImmunoSep and RISCinCOVID (granted to the Hellenic Institute for the Study of Sepsis), and the Horizon Health European Grant EPIC-CROWN-2 (granted to the Hellenic Institute for the Study of Sepsis)., (Copyright © 2022 The Author(s). Published by Elsevier Inc. All rights reserved.)

Although clinical definitions of acute bacterial skin and skin-structure infection (ABSSSI) are now well established, guidance of the prediction of likely pathogens based on evidence is missing. This was a large survey of the microbiology of ABSSSIs in Greece. During the period November 2014 to December 2016, all admissions for ABSSSI in 16 departments of internal medicine or surgery in Greece were screened to determine the likely bacterial aetiology. Samples were cultured on conventional media. Expression of the SA442, mecA/mecC and SCCmec-orfX junction genes was assessed. Following univariate and forward logistic regression analysis, clinical characteristics were used to develop scores to predict the likely pathogen with a target of 90% specificity. In total, 1027 patients were screened and 633 had positive microbiology. Monomicrobial infection by Gram-positive cocci occurred in 52.1% and by Gram-negative bacteria in 20.5%, and mixed infection by Gram-positive cocci and Gram-negative bacteria in 27.3%. The most common isolated pathogens were Staphylococcus aureus and coagulase-negative staphylococci. Resistance to methicillin was 57.3% (53.5-61.1%). Three predictive scores were developed: one for infection by methicillin-resistant S. aureus, incorporating recent hospitalisation, atrial fibrillation, residency in long-term care facility (LTCF) and stroke; one for mixed Gram-positive and Gram-negative infections, incorporating localisation of ABSSSI in lumbar area, fluoroquinolone intake in last 6 days, residency in LTCF and stroke; and another for Gram-negative infection, incorporating skin ulcer presentation, peptic ulcer and solid tumour malignancy. In conclusion, methicillin-resistant staphylococci are the main pathogens of ABSSSIs. The scores developed may help to predict the likely pathogen., (Copyright © 2019 Elsevier Ltd. All rights reserved.)

A long time ago in a galaxy far, far away, the Sith Lord Karness Muur engineered the rakghoul plague, a disease that transformed infected humans into near-mindless predatory rakghouls. At its peak, the disease infected millions of individuals, giving rise to armies of rakghouls on a number of planets. Whether rakghoul populations have persisted until this day is not known, making a rakghoul invasion on Earth not completely improbable. Further, a strategy for defence against an outbreak of the disease on Earth has not yet been proposed. To fill this glaring gap, we developed the first mathematical model of the population dynamics of humans and rakghouls during a rakghoul plague outbreak. Using New South Wales as a model site, we then obtained ensembles of model predictions for the outcome of the rakghoul plague in two different disease control strategy scenarios (population evacuation and military intervention), and in the absence thereof. Finally, based on these predictions, we propose a set of policy guidelines for successfully controlling and eliminating outbreaks of the rakghoul plague in Australian states.

Introduction: Kawasaki disease is an acute necrotising vasculitis of the medium- and small-sized vessels, occurring mainly in Japanese and Korean babies and children, aged 6 months to 5 years. Its main complication is damage of coronary arteries, which has the potential to be fatal. Here we report a rare case of Kawasaki disease that occurred in a 20-year-old Greek adult., Case Presentation: A 20-year-old Greek man presented with high fever, appetite loss, nausea and vomiting, headache and significant malaise. He had an erythema of the palms and strikingly red lips and conjunctiva. As he did not respond to broad-spectrum antibiotics and after having excluded other possible diagnoses, the diagnosis of Kawasaki disease was set. He was treated with intravenous immunoglobulin and oral aspirin on the 10th day since the onset of the illness. His clinico-laboratory response was excellent and no coronary artery aneurysms were detected in coronary artery computed tomography performed 1 month later., Conclusions: This report of an adult case of European Kawasaki disease may be of benefit to physicians of various specialties, including primary care doctors, hospital internists, intensivists and cardiologists. It demonstrates that a case of prolonged fever, unresponsive to antibiotics, in the absence of other diagnoses may be an incident of Kawasaki disease. It is worth stressing that such a diagnosis should be considered, even if the patient is adult and not of Asian lineage.