Communicable

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• Communicable E56: Frequentist vs Bayesian for clinical trial analysis – 99% probability you’ll want to listen to this 15.06.2026 1ч 5мин

  In this episode of Communicable, Emily McDonald and Josh Davis are joined by Roger Lewis (USA) and Ian Marschner (Australia) to compare and contrast Bayesian and frequentist statistical approaches. The panel discusses the fundamental principles of both methods, common misconceptions, and the extent to which they are often more similar than many realise. Together, they explore their use in clinical trial design, analysis, and reporting, including adaptive trials and sequential learning. Additional topics include sample size misconceptions, regulatory versus clinical thresholds, and the challenges of interpreting post hoc reanalyses of negative trials.This episode was edited by Kathryn Hostettler and the executive producer of Communicable is Angela Huttner.  Further reading:Berry SM, et al. Bayesian Adaptive Methods for Clinical Trials (Chapman & Hall/CRC Biostatistics Series). Boca Raton (FL): CRC Press; 2010. FDA Guidance Document: Use of Bayesian Methodology in Clinical Trials of Drug and Biological Products FDA, 2026, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/use-bayesian-methodology-clinical-trials-drug-and-biological-productsLee TC, et al. Contextualizing the use of corticosteroids in severe Pneumocystis jirovecii pneumonia through a Bayesian lens. CMI Comms 2025, https://www.cmi-comms.org/article/S2950-5909(25)00082-4/fulltextLivingston EH and Lewis RJ. JAMA Guide to Statistics and Methods, https://jamaevidence.mhmedical.com/Book.aspx?bookId=2742Marschner I. Confidence distributions for treatment effects in clinical trials: Posteriors without priors. Stat Med 2024, doi: 10.1002/sim.10000.Whitehead J. The design and analysis of sequential clinical trials. Revised 2nd ed. Chichester: John Wiley & Sons; 1997.
• Communicable E55: Bonus episode – Bundibugyo ebolavirus outbreak 08.06.2026 57мин

  In this bonus episode of Communicable, hosts Anne-Grete Märtson and Angela Huttner invite Martin Grobusch (University of Amsterdam; ESCMID Emerging Infections Subcommittee) and Daniel Bausch (National University of Singapore, London School of Hygiene & Tropical Medicine, and Geneva Graduate Institute) to discuss the Bundibugyo ebolavirus outbreak currently ongoing in the Democratic Republic of Congo and Uganda. Clinical and virological differences between Bundibugyo and Zaire ebolaviruses are discussed, as are the particular challenges for diagnosis, treatment, and prevention confronting healthcare workers of this outbreak. The episode accompanies two new publications in CMI Communications and CMI:Gupta N, Mora-Rillo M, Gkrania-Klotsas E, et al. Bundibugyo ebolavirus (BDBV): what first responders/clinicians need to know. CMI Communications, 2026; 2 (DOI: 10.1016/j.cmicom.2026.105207) Gupta N, Marta Mora-Rillo, Gkrania-Klotsas E, et al. Bundibugyo ebolavirus outbreak in the Democratic Republic of the Congo and Uganda: rapid assessment from the ESCMID Emerging Infections Subcommittee. Clin Microbiol Infect, 2026 (DOI: 10.1016/j.cmi.2026.05.042)
• Communicable E54: ESCMID Global Late Breakers, part 2 01.06.2026 55мин

  Our editors – Marc Bonten, Erin McCreary, Anne-Grete Märtson, Angela Huttner, and Josh Davis – are back for part two of the ESCMID Global Late Breakers series, summarising five more late-breaking trials presented at ESCMID Global 2026. They discuss the trials' strengths and weaknesses, and whether their results should change practice. The five trials presented in this half of the series are listed below, and links to their respective sessions can be watched and rewatched on the ESCMID Global Virtual Platform. Links to corresponding abstracts and publications where available are provided as well.Conflict of interest/involvement in the trials:Marc Bonten was the chair of the E.mbrace trial's steering committeeJosh Davis is global co-lead of the SNAP trialJosh Davis was a site investigator on the E.mbrace trialAngela Huttner was an independent/unpaid member of the E.mbrace trial's steering committee and an investigator on the precursor phase 1 trial testing the E. coli vaccinePROCALBAN trial (Late-breaking clinical trials in sepsis management)Chowdhury F, et al. Use of Procalcitonin Point-Of-Care Testing to Guide De-Escalation of Antibiotic Therapy in Adult Sepsis Patients in a Tertiary Hospital in Bangladesh: A Randomised Controlled Open-Label Trial, Preprints with The Lancet, doi: 10.2139/ssrn.6541698BENEFICIAL trial (Late-breaking clinical trials in sepsis management) De Cock PA, et al. Bedside model-informed precision dosing of vancomycin in severely ill neonates and children in Belgium (the BENEFICIAL trial): a multicentre, randomised controlled trial. Lancet Child Adolesc Health, doi: 10.1016/S2352-4642(25)00385-2  SNAP trial (Late-breaking clinical trials in sepsis management) Bowen A. Adjunctive clindamycin for treatment of Staphylococcus aureus bacteraemia: a randomised controlled trial within the S. aureus Network Adaptive Platform (SNAP), abstractAdjunctive betamethasone treatment of hypoxemic adults hospitalised with Mycoplasma pneumoniae community-acquired pneumonia: an open-label, multicentre, randomised, controlled trial (Late-breaking research from The Lancet)Hagman K, et al. Adjunctive betamethasone treatment of hypoxaemic adults hospitalised with Mycoplasma pneumoniae community-acquired pneumonia: an open-label, multicentre, randomised, controlled trial. Lancet 2026, doi: 10.1016/j.lanepe.2026.101610E.mbrace trial (Vaccines: landmark trials and preventive immunisation)Cohen CA, et al. Randomised phase III trial of a 9-valent vaccine (ExPEC9V) for prevention of invasive Escherichia coli disease (IED) in older adults (E.mbrace), abstractThe Swiss multicentre phase 1, first-in-human trial testing the conjugate E. coli vaccine:Huttner A et al. Safety, immunogenicity, and preliminary clinical efficacy of a vaccine against extraintestinal pathogenic Escherichia coli in women with a history of recurrent urinary tract infection: a randomised, single-blind, placebo-controlled phase 1b trial. Lancet Infect Dis 2017: May;17(5):528-537
• Communicable E53: ESCMID Global Late Breakers, part 1 18.05.2026 1ч

  The ESCMID Global Late Breakers series returns to Communicable! Five CMI Communications editors – Marc Bonten, Josh Davis, Angela Huttner, Anne-Grete Märtson, and Erin McCreary – handpicked five late-breaking trials presented at ESCMID Global 2026 to summarise their  findings and discuss whether the results will change their practice. This is part one of the two-part series. Trials presented are listed below and links to their respective sessions can be watched and rewatched on the ESCMID Global Virtual Platform. Links to corresponding publications, if available, and mentioned related articles are provided as well. The FAST trial (Late-breaking research from JAMA)Banerjee R, et al. Fast Antimicrobial Susceptibility Testing for Gram-Negative Bacteremia. The FAST Randomized Clinical Trial, doi: 10.1001/jama.2026.5487 Srinivasan A. A Multinational Trial of Rapid Antimicrobial Susceptibility Testing. Is FASTer Better?, doi: 10.1001/jama.2026.5504The CEFMEC trial (Poster session)Hayakawa K, et al. Effectiveness of cefmetazole versus meropenem for invasive urinary tract infections caused by extended-spectrum β-lactamase-producing Escherichia coli, Antimicrob Agents Chemother 2023, doi: 10.1128/aac.00510-23The COBRA trial (Late-breaking trials in surgical infection prevention)Overdevest AG, et al. Antibiotic treatment for 1 day versus 4-7 days in patients with acute cholangitis after adequate endoscopic biliary drainage (COBRA): study protocol for a randomized controlled trial. Trials, doi: 10.1186/s13063-026-09524-7The DOTS trial, a secondary analysis (Late-breaking research from JAMA)Lodise, TP, et al. Pharmacokinetics of Dalbavancin in Complicated Staphylococcus aureus Bacteremia: A Secondary Analysis of the DOTS Randomized Clinical Trial, JAMA 2026, doi: 10.1001/jamanetworkopen.2026.11652 Walls G, et al. Patient-reported Perceptions, Experiences, and Preferences Around Intravenous and Oral Antibiotics for the Treatment of Staphylococcus aureus Bacteremia: A Descriptive Qualitative Study, Clin Infect Dis 2026, doi: 10.1093/cid/ciaf522Turner  NA , et al.  Dalbavancin for treatment of Staphylococcus aureus bacteremia: the DOTS randomized clinical trial. JAMA 2025, doi: 10.1001/jama.2025.12543 Maribavir for clinically significant cytomegalovirus infection in hematopoietic cell transplantation: a real-world retrospective international study of the Infectious Disease Working Party of EBMT (Late-breaking research from The Lancet)Paviglianiti A, et al. Maribavir for clinically significant cytomegalovirus infection in haematopoietic cell transplant recipients in Europe: a real-world multicentre retrospective registry study. Lancet 2026. doi: 10.1016/S1473-3099(26)00144-1
• Communicable E52: ESCMID Global Trials, PETER PEN and ASTARTE 08.05.2026 1ч

  In this collaborative episode of Breakpoints and Communicable, the hosts revisit the “trial run” session from ESCMID Global, a format designed to facilitate critical discussion of major infectious diseases trials. This episode focuses on two studies addressing bloodstream infections caused by third‑generation cephalosporin-resistant Enterobacterales [1].Mical Paul (Rambam Health Care Campus, Israel) joins the podcast to discuss the PETER PEN trial [1,2], comparing piperacillin/tazobactam with meropenem, including its design, interim analyses, and interpretation alongside prior data such as MERINO. The episode also features Jesús Rodríguez‑Baño (University of Seville, Spain), who presents a post hoc analysis of the ASTARTE trial [1,3], comparing temocillin and carbapenems.This episode was edited by Lacy Worden and was peer reviewed by Jeanette Bouchard (Duke Antimicrobial Stewardship Outreach Network (DASON) Durham, NC, USA). ReferencesPaul, M., & Rodríguez-Baño, J. (2026, April 20). The trial run: treatment of ESBL bacteraemia - off to never-never land. [Presentation]. ESCMID Global 2026, Munich, Germany. ESCMID Global Virtual Platform.Bitterman R, Koppel F, Mussini C, et al. Piperacillin-tazobactam versus meropenem for treatment of bloodstream infections caused by third-generation cephalosporin-resistant Enterobacteriaceae: a study protocol for a non-inferiority open-label randomised controlled trial (PeterPen). BMJ Open. 2021;11(2):e040210. Published 2021 Feb 8. doi: 10.1136/bmjopen-2020-040210 Marín-Candón A, Rosso-Fernández CM, Bustos de Godoy N, et al. Temocillin versus meropenem for the targeted treatment of bacteraemia due to third-generation cephalosporin-resistant Enterobacterales (ASTARTÉ): protocol for a randomised, pragmatic trial [Internet]. BMJ Open. 2021 Sep 27;11(9):e049481. doi: 10.1136/bmjopen-2021-049481 Further readingHarris PNA, et al. Effect of Piperacillin-Tazobactam vs Meropenem on 30-Day Mortality for Patients With E coli or Klebsiella pneumoniae Bloodstream Infection and Ceftriaxone Resistance: A Randomized Clinical Trial. JAMA. 2018;320(10):984–994. doi: 10.1001/jama.2018.12163.
• A message to listeners, 4 May 2026 04.05.2026 1мин

  This is a short message to Communicable listeners to inform them that the next episode will be released on Friday, 8 May, as it is a collaboration episode with Breakpoints, the podcast of the Society of Infectious Diseases Pharmacists. It will cover the two trials presented in Munich during ESCMID Global's late-breaker Trial Run session.
• Communicable E51: We will make you love PK/PD, part 1 20.04.2026 47мин

  Communicable is launching a new series on everything related to pharmacokinetics (PK) and pharmacodynamics (PD). Kicking off this series are hosts Thomas Tängdén, Erin McCreary and Angela Huttner, and invited guests Amy Legg and Rekha Pai Mangalore. They walk us through key parameters and terms of PK/PD, such as volume of distribution, minimum inhibitory concentration (MIC), epidemiological cut-off value (ECOFF), and PK/PD indices, laying the foundation to better comprehend clinical applications such as setting a clinical breakpoint and how it guides therapeutic drug monitoring (TDM). This first episode encompasses a broad scope across PK/PD theory, preparing the listener for subsequent episodes that will explore these topics with greater depth and make you love PK/PD. This episode was peer-reviewed by Ummu Afeera Zainulabid of the International Islamic University, Kuantan, Malaysia.   Terms and definitions ADME, a drug’s journey through the body: absorption, distribution, metabolism, excretionVolume of distribution, a parameter describing the theoretical volume that would be necessary to contain the total amount of an administered drug at the same concentration that it is observed in the blood plasmaClearance, the volume of blood cleared of drug per unit timeHalf-life, the time required for the concentration of a drug to decrease to half of its initial amount in the bodyLoading dose, a larger initial dose designed to rapidly bring drug levels into the therapeutic rangeSteady state, an equilibrial condition in which the rate of input of a drug is equal to the rate of its outputMIC, minimum inhibitory concentrationECOFF, epidemiological cut-off value: the highest MIC value of isolates that are not known to have resistance and are therefore considered representative of wild-type bacterial isolatesClinical breakpoint setting, takes into account drug dosing, PK/PD, site of infection, clinical data; what we think is the breakpoint for the lab to call a bacterial organism susceptible to a drugPK/PD index, a parameter that describes the observed antimicrobial activity of an antimicrobial; there are three different indices: T>MIC (bacterial killing depends on the drug concentration’s remaining higher than the MIC over time)Cmax/MIC (bacterial killing depends on the drug’s peak concentration)AUC/MIC (bacterial killing depends on the area under the curve over the MIC)TDM, therapeutic drug monitoringFurther readingMouton JW, et al. MIC-based dose adjustment: facts and fables. J Antimicrob Chemother 2018. doi:10.1093/jac/dkx427Märtson A, et al. The pharmacokinetics of antibiotics in patients with obesity: a systematic review and consensus guidelines for dose adjustments. Lancet Infect Dis 2025. doi: 10.1016/S1473-3099(25)00155-0Eagle H and Musselman AD. The rate of bactericidal action of penicillin in vitro as a function of its concentration, and its paradoxically reduced activity at high concentrations against certain organisms. J Exp Med 1948. doi: 10.1084/jem.88.1.99
• Communicable E50: Quarterly catch-up (April 2026 edition) 06.04.2026 58мин

  This is the first episode of the 'Quarterly catchup' series, in which CMI Communications editors discuss important and useful articles that have come out in the last 3 months to understand their results and potential clinical impact. In this inaugural episode of 'Quarterly catchup', Emily McDonald (Canada), Thomas Tängdén (Sweden) and Navaneeth Narayanan (USA) convene to discuss clinical microbiology and infectious diseases studies published in the first quarter of 2026 [1-6]. From Wolbachia-infected mosquitoes reducing dengue infection to exploration of antibiotic combination therapies against multidrug-resistant organisms, our hosts summarize six articles they found the most interesting, and discuss whether they can and should change clinical practice.   This episode was peer reviewed by Connor Prosty of McGill University, Montréal, Canada.  ReferencesLim JT, et al. Dengue suppression by Male Wolbachia-Infected mosquitoes. NEJM 2026. doi: https://doi.org/10.1056/NEJMoa2503304 Escrihuela-Vida F, et al. Adjunctive Fosfomycin for the Treatment of Staphylococcus aureus Bacteremia: A Pooled Post Hoc Analysis of Individual Participant Data From 2 Randomized Trial. Clin Infect Dis 2026. doi: https://doi.org/10.1093/cid/ciaf387 Baldanzi G, et al. Antibiotic use and gut microbiome composition links from individual-level prescription data of 14,979 individuals. Nat Med 2026. doi: https://doi.org/10.1038/s41591-026-04284-y.Quentin Vallé, et al. Evaluating the antibacterial activity of ceftazidime/avibactam and aztreonam combinations against multidrug-resistant Stenotrophomonas maltophilia complex isolates in a hollow fibre infection model.  Clin Microbiol Infect 2026. doi: https://doi.org/10.1016/j.cmi.2026.02.010 Rana AI, et al. Cabotegravir plus Rilpivirine for Persons with HIV and Adherence Challenges. NEJM 2026. doi: https://doi.org/10.1056/NEJMoa2508228 Donovan J, et al. Genotype-stratified adjunctive dexamethasone for tuberculous meningitis in HIV-negative adults: a randomized controlled phase 3 trial. Nat Med 2026. doi: https://doi.org/10.1038/s41591-025-04138-z Further readingThwaite GE, et al. Dexamethasone for the Treatment of Tuberculous Meningitis in Adolescents and Adults. NEJM 2004. doi: https://doi.org/10.1056/NEJMoa040573 Behrmann LV. “The specimen is never wrong”: the pathologist behind Wolbachia. CMI Communications, 2026. doi: https://doi.org/10.1016/j.cmicom.2026.105185                
• Communicable E49: Outbreaks & how to handle them 23.03.2026 54мин

  In this episode of Communicable, hosts Angela Huttner and Marc Bonten invite two members of the ESCMID Emerging Infections Subcommittee, Martin Grobusch (Amsterdam, Netherlands) and Pikka Jokelainen (Copenhagen, Denmark), to discuss infectious disease outbreaks. Sparked by the Subcommittee's beloved 'Epi Alert', which identifies and tracks outbreaks around the world, the episode covers common missteps and underestimated challenges in handling new outbreaks, the effects of climate change, and what 'One Health' really means. This episode was peer reviewed by Ummu Afeera Zainulabid of the International Islamic University Malaysia, Kuantan, Malaysia.Further readingEpi Alert. https://www.escmid.org/science-research/emerging-infections-subcommittee/eis-activities/Pellejero-Sagastizábal G, et al. Delayed correct diagnoses in emerging disease outbreaks: historical patterns and lessons for contemporary responses. CMI 2025. https://www.clinicalmicrobiologyandinfection.org/article/S1198-743X(25)00169-7/fulltext One Health High-Level Expert Panel (OHHLEP), et al. One Health: A new definition for a sustainable and healthy future. PLoS Pathogens 2022. https://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1010537 Swiss Tropical and Public Health Institute News. https://www.swisstph.ch/en/news
• Communicable E48: International Women's Day - are infections & AMR really different in women? 09.03.2026 39мин

  Yesterday was International Women's Day. In light of that, Communicable prepared a special episode in which hosts Erin McCreary and Annie Joseph are joined by Esmita Charani (South Africa) and Annette Westgeest (Netherlands) for a discussion on gender- and sex-dependent patient-care disparities in the infectious diseases space. Together they review recent research findings that identified gender and sex as important determinants influencing patient outcomes and even decision making by prescribers. They also explore how societal and cultural norms may introduce further nuance and complexities. The panel remains optimistic in reaching equal healthcare for all, reflecting also on progressive steps such as increasing recognition by international organisations like the WHO, which published guidance on gender inequalities in national plans on AMR in 2024.This episode was peer reviewed by Casandra Bulescu at the Dr. Victor Babes Clinical Hospital of Infectious and Tropical Diseases in Bucharest, Romania.ReferencesCharani E, et al. Wellcome Open Research, 2024. Charani E, et al. Lancet Global Health, 2023.WHO guidance on gender inequalities in national action plans on AMR, 2024.Westgeest AC's presentation at ESCMID Global 2023.Dellière S, et al. Clin Microbiol Infect, 2026.Westgeest AC, et al. Clin Microbiol Infect, 2023.Madsen TE, et al. DISPARITY-II study, 2014.Criado Perez, C. Invisible Women. Ausman SE, et al. CLASI study, 2023.Vaughn VM, et al. ICHE, 2022.Szymczak JE. Clin Infect Dis, 2019.
• Communicable E47: Drawing the line - the writing, reach, and limits of guidelines 23.02.2026 1ч

  In this third collaboration between SIDP’s Breakpoints and ESCMID’s Communicable podcasts, hosts Erin McCreary and Angela Huttner invite two veteran authors of guidelines and guidances, Pranita Tamma (Philadelphia, USA) and Benedikt Huttner (WHO, Geneva, Switzerland) [1-3]. Together, they deconstruct the complex landscape of developing and implementing guidelines into digestible components: they discuss why different organizations develop guidelines and what need they hope to fulfil, the framework including the GRADE methodology under which guidelines are written, and major barriers in the uptake of guidelines. The conversation also details the distinction between guideline and guidance as well as the art and science behind formulating recommendations or suggestions, with a few anecdotal cases sprinkled in from the panel. This episode was edited by Kathryn Hostettler and Lacy Worden. It was peer reviewed for Breakpoints by Lacy Worden and for Communicable by Ljiljana Lukić of University Hospital for Infectious Diseases in Zagreb, Croatia.  References WHO handbook for guideline development, 2nd Edition The WHO AWaRe (Access, Watch, Reserve) antibiotic book IDSA 2024 Guidance on the Treatment of Antimicrobial Resistant Gram-Negative InfectionsFurther readingESCMID AMR Guidelines, https://clinicalmicrobiologyandinfection.com/retrieve/pii/S1198743X21006790 GRADE working group, https://www.gradeworkinggroup.org/GRADE Book, https://book.gradepro.org/ IDSA's intraabdominal guidelines, https://www.idsociety.org/practice-guideline/intra-abdominal-infections/ ESCMID Manual for Clinical Practice Guidelines and Other Guidance Documents, https://www.escmid.org/guidelines-journals/guidelines/ International Consensus Guidelines for the Optimal Use of the Polymyxins https://accpjournals.onlinelibrary.wiley.com/doi/epdf/10.1002/phar.2209 American Thoracic Society guidelines on community-acquired pneumonia, https://www.atsjournals.org/doi/abs/10.1164/rccm.202507-1692ST 
• Communicable E46: Steroids for pneumocystis pneumonia 09.02.2026 55мин

  In this episode of Communicable, Navaneeth Narayanan and Josh Nosanchuk invite Virginie Lemiale and Elie Azoulay (Paris, France) as well as fellow editor Emily McDonald (Montreal, Canada)—this time as guest—to discuss adjunctive steroid therapy for pneumocystis pneumonia (PCP) in HIV-negative individuals. In 2025, Lemiale and Azoulay published results from their double-blind, randomised controlled trial investigating steroid treatment for severe Pneumocystis jirovecii pneumonia (PIC trial) in the Lancet Respiratory Medicine [1]. At first glance, one might dismiss the study’s clinical impact due the ‘negative' result of  the primary outcome, mortality at 28 days, which just missed a statistically significant difference between groups. There was a clinical difference, however, and all other outcomes, including 90-day mortality, were significantly different between groups. Understanding how pivotal these results were to clinical practice, McDonald and colleagues sought to contextualise the results of the PIC trial through a Bayesian analysis in a follow-up publication [2]. While the discussion provides useful clinical commentary, it also helps both to demystify Bayesian analysis and to call attention to what might be lost with strict or overly concrete interpretations of traditional frequentist analyses. This episode was peer reviewed by Arjana Zerja from the Mother Theresa University Hospital Center, Tirana, Albania.ReferencesLemiale V, et al. Adjunctive corticosteroids in non-AIDS patients with severe Pneumocystis jirovecii pneumonia (PIC): a multicentre, double-blind, randomised controlled trial. Lancet Respir Med. 2025;13(9):800-808. doi:10.1016/S2213-2600(25)00125-0.Lee TC, Albuquerque AM, McDonald EG. Contextualizing the use of corticosteroids in severe Pneumocystis jirovecii pneumonia through a Bayesian lens. CMI Commun. 2025;2(4):105141. doi:10.1016/j.cmicom.2025.105141.
• Communicable E45: Top infectious diseases papers in 2025 26.01.2026 38мин

  In this episode of Communicable, Josh Davis (Newcastle, Australia) and Emily McDonald (Montreal, Canada), plus invited guest, Steven Tong (Melbourne, Australia)—all practicing physicians and clinical trialists—assemble to discuss some of their ‘top infectious diseases papers published in 2025’. Bassam Ghanem (Jeddah, Saudi Arabia), whom one might know better as Antibiotic Steward on social media, was also invited to share his favourite publications of 2025.Six papers that were most consistently picked by the panel are presented, explaining why they were picked and how they have shifted paradigms or changed their practice. This episode complements the previous episode, which presented ‘top clinical microbiology papers in 2025’, and was peer reviewed by Akshatha Ravindra of Kasturba Medical College, Manipal, India.   ResourcesCLARITY initiative websitePapers presented (in order of presentation) Turner NA, et al. Dalbavancin for Treatment of Staphylococcus aureus Bacteremia. JAMAMeya DB, et al. Trial of High-Dose Oral Rifampin in Adults with Tuberculous Meningitis. NEJMVodstrcil LA, et al. Male-Partner Treatment to Prevent Recurrence of Bacterial Vaginosis. NEJMKreimer A, et al. Noninferiority of One HPV Vaccine Dose to Two Doses. NEJMGuglielmetti L, et al. Oral Regimens for Rifampin-Resistant, Fluoroquinolone-Susceptible Tuberculosis. NEJMRoss JDC et al, Oral gepotidacin for the treatment of uncomplicated urogenital gonorrhoea (EAGLE-1). Lancet  ‘One liners’ (in order of presentation)Burdet C et al. Cloxacillin versus cefazolin for meticillin-susceptible Staphylococcus aureus bacteraemia (CloCeBa). LancetLemiale V et al, Adjunctive corticosteroids in non-AIDS patients with severe Pneumocystis jirovecii pneumonia (PIC). Lancet Respir MedLuetkemeyer AF et al, Doxycycline to prevent bacterial sexually transmitted infections in the USA. Lancet Inf DisEyting M, et al. A natural experiment on the effect of herpes zoster vaccination on dementia. NatureXie M, et al. The effect of shingles vaccination at different stages of the dementia disease course. CellPomirchy M, et al. Herpes Zoster Vaccination and Dementia Occurrence. JAMADurbin AP et al, Daily Mosnodenvir as Dengue Prophylaxis in a Controlled Human Infection Model. NEJMHook EW et al, One Dose versus Three Doses of Benzathine Penicillin G in Early Syphilis. NEJMOpdam MAA et al, Continuation versus temporary interruption of immunomodulatory agents during infections in patients with inflammatory rheumatic diseases. Clin Infect DisArundel C et al, Negative pressure wound therapy versus usual care in patients with surgical wound healing by secondary intention in the UK (SWHSI-2). LancetHonourable mentionsChaccour C, et al. Ivermectin to Control Malaria. NEJMLucinde RK, et al. A Pragmatic Trial of Glucocorticoids for Community-Acquired Pneumonia. NEJMMorel J, et al. Effect of a 1-month methotrexate delay on pneumococcal vaccine immunogenicity and disease control in patients with early rheumatoid arthritis (VACIMRA). Lancet RheumatolHaukoos J, et al. Hepatitis C Screening in Emergency Departments. JAMAMajor Extremity Trauma Research Consortium (METRC). Oral vs Intravenous Antibiotics for Fracture-Related Infections: The POvIV Randomized Clinical Trial, JAMA SurgAnderson CS, et al. Influenza vaccination to improve outcomes for patients with acute heart failure (PANDA II). LancetSt Peter SD, et al. Appendicectomy versus antibiotics for acute uncomplicated appendicitis in children. LancetPan CQ, et al. Tenofovir and Hepatitis B Virus Transmission During Pregnancy. JAMAGohil SK, et al. Improving Empiric Antibiotic Selection for Patients Hospitalized With Abdominal Infection. JAMA SurgRelated podcast episodesCommunicable E44: Top clinical microbiology papers in 2025 https://share.transistor.fm/s/6e5c26aeCommunicable E29: Bacterial vaginosis & male partners, https://share.transistor.fm/s/3de4f5c3 Communicable E28: Late-breaker trials at ESCMID Global: Should they change your practice? - part 2, https://share.transistor.fm/s/4f044e8c Communicable E20: Tuberculosis today https://share.transistor.fm/s/9858900e 
• Communicable E44: Top clinical microbiology papers in 2025 12.01.2026 1ч 10мин

  In the first Communicable episode of 2026, Annie Joseph and Josh Nosanchuk invite Robin Patel (Rochester, USA) and Fidelma Fitzpatrick (Dublin, Ireland) to discuss some of their favourite clinical microbiology papers published in 2025. These six papers highlight everything from technological advances of genomics and molecular diagnostic testing to the importance of patient and public involvement in research as well as effective communication [1-6]. The panel also discusses whether or not any of these papers have changed their practice.This episode was edited by Kathryn Hostettler and peer reviewed by Sinéad Kilgarriff of the National Virus Reference Laboratory University College, Dublin in Ireland. Robin’s papersOyeniran SJ, et al. J Clin Microbiol 2025. DOI: https://doi.org/10.1128/jcm.00986-25 Xie O, et al. Lancet Microbe 2025. DOI: 10.1016/j.lanmic.2025.101182Lopopolo M et al., Science 2025. DOI: 10.1126/science.adu7144Fidelma’s papersTurner NA, et al. JAMA 2025. DOI: 10.1001/jama.2025.12543  Paterson DL, et al. Lancet Infectious Diseases 2025. DOI: 10.1016/S1473-3099(25)00469-4Langford BJ, et al. Antimicrobial Stewardship & Healthcare Epidemiology 2025. DOI: 10.1017/ash.2025.10210Related podcast episodesCommunicable episode 1: Late breaker trials at ESCMID Global 2024, https://share.transistor.fm/s/9c598f68ReferencesOyeniran SJ, et al. J Clin Microbiol 2025. DOI: https://doi.org/10.1128/jcm.00986-25 Xie O, et al. Lancet Microbe 2025. DOI: 10.1016/j.lanmic.2025.101182Turner NA, et al. JAMA 2025. DOI: 10.1001/jama.2025.12543  Paterson DL, et al. Lancet Infectious Diseases 2025. DOI: 10.1016/S1473-3099(25)00469-4Lopopolo M et al., Science 2025. DOI: 10.1126/science.adu7144Langford BJ, et al. Antimicrobial Stewardship & Healthcare Epidemiology 2025. DOI: 10.1017/ash.2025.10210Further readingMohammed HT, et al. IJSEM 2025. DOI: 10.1099/ijsem.0.006986  Skally M, et al. BMJ Open 2025. DOI: 10.1136/bmjopen-2025-103431Ong SWX and Tverring J. CMI Communications 2025. DOI: 10.1016/j.cmicom.2025.105154Tverring J and Ong SWX. CMI Communications 2025. DOI: 10.1016/j.cmicom.2025.105169 
• Communicable E43: Katie's picks 29.12.2025 47мин

  In this final episode of 2025, hosts Annie Joseph (Nottingham, UK) and Angela Huttner (Geneva, Switzerland), interview Communicable's producer, Katie Hostettler-Oi (Zurich, Switzerland), to learn which episodes she liked best this year. Their discussion provides a behind-the-scenes look at some of the episodes--including the strange surprises that sometimes came with them. Finally, the CMI Comms editors and editorial fellows send in their perspectives on 2025 and their wishes for 2026.
• Communicable E42: Should doctors stay at X (Twitter) or leave it? 15.12.2025 1ч 5мин

  During the COVID-19 pandemic with lockdown mandates and social distancing, doctors, researchers, and the public were able to find refuge and community online; for the infectious disease community, it was on the social media platform Twitter, and more specifically under the widely used hashtag, #IDTwitter. Under new ownership from 2022, however, Twitter’s name and brand changed to what we now know as X, and “the heyday of #IDTwitter is long since gone”. In this special episode of Communicable, Angela Huttner and Marc Bonten invite doctors and science communicators, Neil Stone (London, UK), Ilan Schwartz (Durham, USA), and Tara Smith (Kent, USA) to debate whether we should stay on X or leave it for alternatives.This episode is a follow-up from Stone and Schwartz’s commentary [1] and Smith’s response letter [2] addressing the same topic published in CMI Communications. The views expressed by the panelists are their own and do not represent the positions of their affiliated institutions or ESCMID. This episode was not peer reviewed.ResourcesYou can follow all participants of this episode on Bluesky: @drneilstone.bsky.social, @germhuntermd.bsky.social, @aetiology.bsky.social, @marcbonten.bsky.social, @angelahuttner.bsky.social, and Stone on X: @DrNeilStone.ReferencesStone NRH and Schwartz IS. Joining the X-odus: Contrasting perspectives on whether infection specialists should leave X (formerly Twitter). CMI Comms 2025. DOI: 10.1016/j.cmicom.2025.105140Smith TC. Twitter remains a haven of harassment. CMI Comms 2025. DOI: 10.1016/j.cmicom.2025.105144Further readingBiever, C. Bluesky’s science takeover: 70% of Nature poll respondents use platform. Nature News 2025. PEW Research Center. How Do Americans View Childhood Vaccines, Vaccine Research and Policy? https://www.pewresearch.org/science/2025/11/18/how-do-americans-view-childhood-vaccines-vaccine-research-and-policy/   NBC News. X’s new location labels unmask users. Insiders say the idea was rejected for years. https://www.nbcnews.com/tech/elon-musk/x-user-location-feature-country-elon-musk-new-rcna245620
• Communicable E41: Diagnostic stewardship 01.12.2025 1ч 2мин

  In the last ten years, 'diagnostic stewardship' has emerged as a core principle of good clinical practice whose implementation impacts both the individual patient and public health at large. In this episode of Communicable, hosts Angela Huttner and Annie Joseph invite two experts in the field, Daniel Morgan (Maryland, USA) and Valerie Vaughn (Utah, USA), to discuss diagnostic stewardship in the context of infectious diseases, hospital medicine, and healthcare in general. Other topics covered include practical interventions for better testing practices and the role of artificial intelligence in the future of diagnostics. The episode highlights how thoughtful, intentional diagnostic practices can enhance clinician workflows and improve patient outcomes.This episode is a follow-up from Morgan’s recently published commentary in CMI Communications on diagnostic testing, and the need for evaluating its clinical impact [1]. The episode was peer reviewed by Özlem Türkmen Recen of Çınarcık State Hospital, Yalova, Türkiye. ReferencesBaghdadi JD & Morgan DJ. Diagnostic tests should be assessed for clinical impact. CMI Comms 2024. DOI: 10.1016/j.cmicom.2024.105010Further readingAdvani S and Vaughn VM. Quality Improvement Interventions and Implementation Strategies for Urine Culture Stewardship in the Acute Care Setting: Advances and Challenges. Curr Infect Dis Rep 2021. DOI: 10.1007/s11908-021-00760-3 Core Elements of Hospital Antibiotic Stewardship Programs, https://www.cdc.gov/antibiotic-use/hcp/core-elements/hospital.html Core Elements of Hospital Diagnostic Excellence (DxEx), https://www.cdc.gov/patient-safety/hcp/hospital-dx-excellence/index.htmlCosgrove SE & Srinivasan A. Antibiotic Stewardship: A Decade of Progress. Infect Dis Clin North Am 2023. DOI: 10.1016/j.idc.2023.06.003 Dik JH, et al. Integrated Stewardship Model Comprising Antimicrobial, Infection Prevention, and Diagnostic Stewardship (AID Stewardship). J Clin Microbiol 2017. DOI: 10.1128/jcm.01283-17Fabre V, et al. Principles of diagnostic stewardship: A practical guide from the Society for Healthcare Epidemiology of America Diagnostic Stewardship Task Force. Infect Control Hosp Epidemiol 2023. DOI: 10.1017/ice.2023.5 Huttner A, et al. Re: ‘ESR and CRP: it's time to stop the zombie tests’ by Spellberg et al. CMI 2025. DOI: 10.1016/j.cmi.2024.09.016 Morgan DJ, et al. Diagnostic Stewardship—Leveraging the Laboratory to Improve Antimicrobial Use. JAMA 2017. DOI:  10.1001/jama.2017.8531 Messacar K, et al. Implementation of rapid molecular infectious disease diagnostics: the role of diagnostic and antimicrobial stewardship. J Clin Microbiol 2017. DOI: 10.1128/jcm.02264-16Messacar K, et al. Clinical and Financial Impact of a Diagnostic Stewardship Program for Children with Suspected Central Nervous System Infection. J Pediatr. 2022. DOI: 10.1016/j.jpeds.2022.02.002  Qian ET, et al. Cefepime vs Piperacillin-Tazobactam in Adults Hospitalized With Acute Infection: The ACORN Randomized Clinical Trial. JAMA 2023. DOI: 10.1001/jama.2023.20583 Siontis KC et al. Diagnostic tests often fail to lead to changes in patient outcomes. J Clin Epidemiol 2014. DOI: 10.1016/j.jclinepi.2013.12.008Vaughn VM, et al. Antibiotic Stewardship Strategies and Their Association With Antibiotic Overuse After Hospital Discharge. Clin Infect Dis 2022. DOI: 10.1093/cid/ciac104Vaughn VM, et al. A Statewide Quality Initiative to Reduce Unnecessary Antibiotic Treatment of Asymptomatic Bacteriuria. JAMA Intern Med 2023. DOI: 10.1001/jamainternmed.2023.2749  
• Communicable E40: AMR in conflict and crisis zones 17.11.2025 57мин

  It’s World AMR Awareness Week (WAAW) and we have prepared a special episode in light of that. In this week's Communicable, Navaneeth Narayanan and Thomas Tängdén host Aula Abbara (London, UK), Guido Granata (Rome, Italy) and Tuomas Aro (Helsinki, Finland) to discuss the phenomenon of AMR in conflict and crisis zones. They elaborate on how difficult conditions and austere environments amplify the spread of AMR, drawing on findings from the ongoing conflicts in Ukraine, Gaza, Syria and other regions. Other topics covered include adapting antimicrobial stewardship and infection prevention and control (IPC) practices as well as the need for genuine political will and international collaboration to end conflicts and their exacerbation on AMR.This episode follows the webinar “Beyond the frontlines” organised by ESCMID’s AMR Action Subcommittee for WAAW 2025, featuring the same guests, and is available on ESCMID Media. This Communicable episode was peer reviewed by Arjana Zerja of Mother Theresa University Hospital Centre, Tirana, Albania.  Related ESCMID and Communicable mediaESCMID Media, Part 1: Beyond the frontlines - tackling AMR in conflict and crisis zones, webinar Communicable episode 11: Nightmare series, part 2 – how to deal with carbapenemase producers Communicable episode 16: Climate change and infections – effects on clinical practice & sustainabilityResourcesTrainee Association of ESCIMD (TAE) Doctors without Borders (Médecins sans Frontières), Antibiogo, https://www.antibiogo.org/Doctors without Borders (Médecins sans Frontières), Mini-lab, https://fondation.msf.fr/en/projects/mini-lab Further ReadingAbbara A, et al. Unravelling the linkages between conflict and antimicrobial resistance. NPJ Antimicrob Resist. 2025. DOI: 10.1038/s44259-025-00099-yAbbara A, et al. A summary and appraisal of existing evidence of antimicrobial resistance in the Syrian conflict. Int J Infect Dis. 2018. DOI: 10.1016/j.ijid.2018.06.010Abu-Shomar R, et al. Multidrug-resistant Pseudomonas isolated from water at primary health care centers in Gaza, Palestine: a cross-sectional study. IJID Reg. 2025. DOI: 10.1016/j.ijregi.2025.100671Aldbis A, et al. The lived experience of patients with conflict associated injuries whose wounds are affected by antimicrobial resistant organisms: a qualitative study from northwest Syria. Confl Health. 2023. DOI: 10.1186/s13031-023-00501-4Aro T, et al. War on antimicrobial resistance: high carriage rates of multidrug-resistant bacteria among war-injured Ukrainian refugees. Clin Microbiol Infect. 2025. DOI: 10.1016/j.cmi.2025.07.010  Bazzi W, et al. Heavy Metal Toxicity in Armed Conflicts Potentiates AMR in A. baumannii by Selecting for Antibiotic and Heavy Metal Co-resistance Mechanisms. Front Microbiol. 2020. DOI: 10.3389/fmicb.2020.00068 Dewachi O. War Biology and Antimicrobial Resistance: The Case of Gaza, AMR Insights, 2024.Granata G, et al. The impact of armed conflict on the development and global spread of antibiotic resistance: a systematic review. Clin Microbiol Infect. 2024. DOI: 10.1016/j.cmi.2024.03.029 Huang XZ, et al. Molecular analysis of imipenem-resistant Acinetobacter baumannii isolated from US service members wounded in Iraq, 2003-2008. Epidemiol Infect. 2012. DOI: 10.1017/S0950268811002871Hujer KM, et al. Analysis of antibiotic resistance genes in multidrug-resistant Acinetobacter sp. isolates from military and civilian patients treated at the Walter Reed Army Medical Center. Antimicrob Agents Chemother. 2006. DOI: 10.1128/AAC.00778-06Karah N, et al. Teleclinical Microbiology: An Innovative Approach to Providing Web-Enabled Diagnostic Laboratory Services in Syria. Am J Clin Pathol. 2022. DOI: 10.1093/ajcp/aqab160Keen EF 3rd, et al. Evaluation of potential environmental contamination sources for the presence of multidrug-resistant bacteria linked to wound infections in combat casualties. Infect Control Hosp Epidemiol. 2012. DOI: 10.1086/667382Murray CK, et al. Recovery of multidrug-resistant bacteria from combat personnel evacuated from Iraq and Afghanistan at a single military treatment facility. Mil Med. 2009. DOI: 10.7205/milmed-d-03-8008Petersen K, et al. Diversity and clinical impact of Acinetobacter baumannii colonization and infection at a military medical center. J Clin Microbiol. 2011. DOI: 10.1128/JCM.00766-10Scott P, et al. An outbreak of multidrug-resistant Acinetobacter baumannii-calcoaceticus complex infection in the US military health care system associated with military operations in Iraq. Clin Infect Dis. 2007. DOI: 10.1086/518170Sensenig RA, et al. Longitudinal characterization of Acinetobacter baumannii-calcoaceticus complex, Klebsiella pneumoniae, and methicillin-resistant Staphylococcus aureus colonizing and infecting combat casualties. Am J Infect Control. 2012. DOI: 10.1016/j.ajic.2011.03.025World Health Organization. Fourth WHO Global Evidence Review on Health and Migration stresses that equitable access to and appropriate use of antibiotics for refugees and migrants is essential to tackling Antimicrobial Resistance, News, 2022.
• Communicable E39: Dengue on the rise 03.11.2025 56мин

  Once confined to the tropics, dengue is spreading via its vector, the Aedes mosquito, to more temperate regions, causing increases in global morbidity, mortality and cost. In 2019, the WHO recognised dengue as one of the top ten global health threats alongside climate change and antimicrobial resistance [1]. In this episode of Communicable, Annie Joseph and Nav Narayanan welcome two dengue experts, André Siqueira of the non-profit Drugs for Neglected Diseases Initiative based in Geneva, Switzerland (Rio de Janeiro, Brazil), and Steven Lim of the Raja Permaisuri Bainun Hospital (Ipoh, Malaysia). Together, they discuss the epidemiology, clinical presentation and management of dengue including comparisons to other arboviral infections like zika and chikungunya, and the heightened risk of disease for vulnerable populations such as pregnant women and those with comorbidities. The conversation also highlights innovative vector-control strategies and candidate therapeutics currently under investigation. This episode was edited by Kathryn Hostettler and peer reviewed by Loora Grünvald of the University of Tartu, Estonia. Resources:Drug for Neglected Diseases (DNDi), https://dndi.org/ Dengue Alliance, https://dndi.org/global-networks/dengue-alliance/ Qdenga vaccine information: https://travelhealthpro.org.uk/news/763/qdenga-dengue-vaccine-guidanceDengavaxia vaccine information: https://www.cdc.gov/dengue/hcp/vaccine/index.html References: World Health Organization, Ten threats to global health in 2019.Further reading: Treating a feverish planet: The Dengue Alliance, a video
• Communicable E38: Why do you have to be so complicated? The 2025 IDSA Complicated UTI Guidelines 20.10.2025 48мин

  In this episode of Communicable, Erin McCreary and Angela Huttner are joined by Barbara Trautner (St. Louis, USA) and Valéry Lavergne (Vancouver, Canada), the co-chairs and leading authors of the first IDSA guideline on complicated urinary tract infection (cUTI), which was published a few months ago [1]. Together, they discuss the process of developing the guideline from its conception in 2018, the new definition of cUTI, their stepwise approach to clinical decision-making, and some case-by-case scenarios for common antibiotics. They also elaborate on how this guideline compares (and contrasts) to other existing UTI guidelines—including the previous IDSA guideline for UTI [2] —and the clinical need to supply frontline clinicians to identify and distinguish complicated cases from the uncomplicated ones. The episode closes with what essential clinical questions the guests hope to tackle next.  This episode was edited by Kathryn Hostettler and peer reviewed by Maria Ana Flores of Santa Maria Local Health Unit, Lisbon, Portugal.Other resources:European Urologic Association guidelinesUpToDateFDA guidance on complicated UTI ReferencesTrautner BW, et al. Clinical Practice Guideline by Infectious Diseases Society of America (IDSA): 2025 Guideline on Management and Treatment of Complicated Urinary Tract Infections Gupta, K, et al. Clinical Practice Guidelines for the Treatment of Acute Uncomplicated Cystitis and Pyelonephritis in Women: 2010 Update by IDSA