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Let's Talk Micro: Daily Summaries Delivered
by Luis Plaza
Clinical microbiology explained in simple terms, suitable for students and microbiologists alike. We discuss organisms, reactions, infectious diseases, and more. Hosted by Luis Plaza, a Medical Laboratory Scientist and microbiologist, who also shares his experiences in the field.
Latest Episodes
The most recent episodes — sign up to get AI-powered summaries of each one.
- 1 weeks ago15 min
249: Micro Minutes: CLSI M100: Beyond S, I, and R
When you open CLSI M100, what are you usually looking for? Susceptibility breakpoints? But did you know there's much more information available beyond susceptible, intermediate, and resistant interpretations? In this episode of Micro Minutes, we explore useful information found throughout CLSI M100, including its tables, comments, and appendices. From intrinsic resistance and predicting susceptibility to other antimicrobials to understanding why certain agents should not be reported as susceptible, we highlight practical examples that can help clinical microbiology professionals interpret antimicrobial susceptibility results. Whether you're a student or an experienced laboratory professional, join us as we take a closer look at CLSI M100 and discover what's beyond S, I, and R. Stay connected with Let's Talk Micro: Website: letstalkmicro.com Questions or feedback? Email me at letstalkmicro@outlook.com Interested in being a guest on Let's Talk Micro? Fill out the form here: https://forms.gle/V2fT3asjfyusmqyi8 Support the podcast: Venmo Buy me a Ko-fi
- 2 weeks ago15 min
248: Micro Minutes: What's in a name- Bacterial Groups and Complexes
Have you ever performed an organism identification using MALDI-TOF mass spectrometry and received a result showing multiple possible species, such as Enterobacter cloacae and Enterobacter asburiae, or Citrobacter freundii and Citrobacter werkmanii? Why does this happen? What do these organisms have in common, and why are they classified into groups or complexes? In this episode of Micro Minutes, Luis explores bacterial groups and species complexes, why they exist, and how they relate to organism identification. He discusses several familiar and lesser-known examples, including the Enterobacter cloacae complex, Acinetobacter calcoaceticus–baumannii complex, Klebsiella pneumoniae species complex, Citrobacter freundii complex, and Pseudomonas putida group. The episode also highlights the Burkholderia cepacia complex and why species-level identification can be particularly important in patients with cystic fibrosis. Finally, learn why reporting an organism at the group or complex level is often appropriate, when additional identification may be necessary, and why understanding the capabilities and limitations of your identification system matters. Stay connected with Let's Talk Micro: Website: letstalkmicro.com Questions or feedback? Email me at letstalkmicro@outlook.com Interested in being a guest on Let's Talk Micro? Fill out the form here: https://forms.gle/V2fT3asjfyusmqyi8 Support the podcast: Venmo Buy me a Ko-fi
- 3 weeks ago50 min
247: Digital Biology: Data Quality in the Age of AI
As artificial intelligence (AI) becomes increasingly integrated into biological research, the quality of the data used to develop these technologies is more important than ever. But what exactly is digital biology, and why does data quality matter? In this episode of Let's Talk Micro, Luis is joined by Jonathan Jacobs, PhD, Senior Director of Bioinformatics at ATCC, to explore digital biology and the challenges associated with biological and genomic data. Dr. Jacobs discusses the importance of metadata, common issues with publicly available genomic databases, and why connecting digital information to authenticated biological materials is essential for reproducibility and reliable research. The conversation also explores how data quality can affect AI models, the role of existing standards, and what researchers can do to improve the accuracy, completeness, and usefulness of the data they generate and share. And, as always, stay until the end to hear Dr. Jacobs' favorite microorganism and what makes it so fascinating to him! Resources Learn more about ATCC: https://www.atcc.org/ Stay connected with Let's Talk Micro: Website: letstalkmicro.com Questions or feedback? Email me at letstalkmicro@outlook.com Interested in being a guest on Let's Talk Micro? Fill out the form here: https://forms.gle/V2fT3asjfyusmqyi8 Support the podcast: Venmo Buy me a Ko-fi
- 4 weeks ago46 min
246: Inside ATCC: From Biological Materials to the Bench
Many microbiology professionals are familiar with ATCC strains used for quality control, validation, and verification—but what happens before those biological materials reach the laboratory? ATCC, the American Type Culture Collection, maintains biological materials used by scientists and laboratories around the world. In this episode of Let's Talk Micro, Luis is joined by Dr. Shahin Ali, Senior Scientist at ATCC, to take a closer look at the work behind biological reference materials. Dr. Ali discusses how ATCC identifies and acquires microorganisms, what characteristics are considered when adding them to the collection, and how materials are authenticated, characterized, preserved, and maintained over time. The conversation also explores expert curation and complete provenance, why authenticated reference materials are important for laboratory quality and reproducibility, and how individual strains of the same species can have meaningful differences. Luis and Dr. Ali also discuss antimicrobial resistance, the growing importance of genomic and metadata quality, and how curated biological collections may support AI-driven research in the future. And, as always, stay until the end to hear Dr. Ali's favorite microorganism—and the personal connection behind his answer. Resources Learn more about ATCC: https://www.atcc.org/ Stay connected with Let's Talk Micro: Website: letstalkmicro.com Questions or feedback? Email me at letstalkmicro@outlook.com Interested in being a guest on Let's Talk Micro? Fill out the form here: https://forms.gle/V2fT3asjfyusmqyi8 Support the podcast: Venmo Buy me a Ko-fi
- Sep 28, 202651 min
World Rabies Day: Revisiting Rabies with Dr. Rodney Rohde
Originally published on September 28, 2022, this episode returns to the Let's Talk Micro feed in recognition of World Rabies Day. Dr. Rodney Rohde joins the podcast to discuss rabies and his extensive experience working with the virus in public health. We start with the basics: What is rabies? How is it transmitted? What are the signs and symptoms? From there, we discuss potential exposures, post-exposure prophylaxis, vaccination, and ways to prevent rabies. Dr. Rohde also shares his experience working in rabies diagnostics and molecular epidemiology, as well as his involvement with wildlife rabies vaccination efforts. We also discuss the importance of recognizing potential exposures, the role of wildlife—particularly bats—and considerations when traveling to areas where rabies may be more prevalent. Finally, what is World Rabies Day, and why is it observed on September 28? Dr. Rohde discusses the history and significance of the day and the importance of education, prevention, and collaboration in the fight against rabies. Tune in as we revisit this conversation and learn more about rabies. Resources World Rabies Day: https://rabiesalliance.org/world-rabies-day Dr. Rohde's rabies book: https://www.elsevier.com/books/rabies/wilson/978-0-323-63979-8 Dr. Rohde's website: https://rodneyerohde.wp.txstate.edu/ Related publication: https://pubmed.ncbi.nlm.nih.gov/33659941/ Stay connected with Let's Talk Micro: Website: letstalkmicro.com Questions or feedback? Email me at letstalkmicro@outlook.com Interested in being a guest on Let's Talk Micro? Fill out the form here: https://forms.gle/V2fT3asjfyusmqyi8 Support the podcast: Venmo Buy me a Ko-fi
- Sep 24, 202643 min
245: Antimicrobials Conference: The Next Chapter for MAD-ID and SIDP
MAD-ID (Making a Difference in Infectious Diseases) and the Society of Infectious Diseases Pharmacists (SIDP) have joined forces to create a new annual meeting focused on antimicrobial therapeutics, stewardship, infectious diseases, and more. In this episode of Let's Talk Micro, Luis is joined by Dr. Erin McCreary and Dr. Mike Rybak to discuss the history of MAD-ID and SIDP, what brought the two organizations together, and highlights from their 2026 meeting. They also discuss sessions relevant to clinical microbiology, practical approaches to applying new science, opportunities for networking and trainees, and what attendees can expect as the meeting moves forward under its new name: Antimicrobials Conference. Resources MAD-ID: https://www.mad-id.org/ Society of Infectious Diseases Pharmacists (SIDP): https://sidp.org/ Information on upcoming Antimicrobials Conference meetings: https://sidp.org/annualmeetings Want to check out the Breakpoints podcast? https://breakpoints-sidp.org/ Stay connected with Let's Talk Micro: Website: letstalkmicro.com Questions or feedback? Email me at letstalkmicro@outlook.com Interested in being a guest on Let's Talk Micro? Fill out the form here: https://forms.gle/V2fT3asjfyusmqyi8 Support the podcast: Venmo Buy me a Ko-fi
- Sep 17, 202656 min
244: Group A Strep: Breaking Down the New IDSA Guidelines
Group A Streptococcus (GAS) is a common cause of pharyngitis, but deciding who should be tested and which testing method to use isn't always straightforward. In 2025, the Infectious Diseases Society of America (IDSA) released updated guidelines on Group A streptococcal pharyngitis, bringing renewed attention to diagnostic stewardship and the use of clinical scoring systems to help guide testing decisions. In this episode of Let's Talk Micro, Dr. Christopher Doern returns to the podcast to break down the updated IDSA guidelines and what they may mean for clinical practice. We discuss clinical scoring systems such as Centor and McIsaac, antigen testing, culture, molecular diagnostics, and point-of-care testing. We also explore turnaround time and cost considerations, GAS carriage and the interpretation of positive results, and how diagnostic decisions connect with antimicrobial stewardship. Tune in as we take a practical look at what's changing in Group A strep testing and how laboratories and clinicians can approach these updated recommendations. This podcast episode is sponsored by Cepheid. The views and opinions expressed by the interviewer in this interview are their own and do not necessarily reflect the position of Cepheid. Resources IDSA Clinical Practice Guideline Update on Group A Streptococcal (GAS) Pharyngitis: IDSA 2025 Group A Streptococcal Pharyngitis Guideline Current Laboratory and Point-of-Care Pharyngitis Diagnostic Testing and Knowledge Gaps: https://pubmed.ncbi.nlm.nih.gov/39688598/ Stay connected with Let's Talk Micro: Website: letstalkmicro.com Questions or feedback? Email me at letstalkmicro@outlook.com Interested in being a guest on Let's Talk Micro? Fill out the form here: https://forms.gle/V2fT3asjfyusmqyi8 Support the podcast: Venmo Buy me a Ko-fi
- Sep 10, 202646 min
243: When AI Meets Medicine
Artificial intelligence is changing how healthcare professionals access and use clinical information. But what does that look like at the point of care? In this episode of Let's Talk Micro, Luis is joined by Dr. Declan Kelly, physician, software engineer, and founder of Eolas Medical, to discuss the role of AI in clinical decision support. Dr. Kelly shares how challenges accessing institutional guidelines and clinical knowledge led to the development of Eolas Medical and how AI can help healthcare professionals find the information they need when making clinical decisions. The conversation explores the importance of local guidelines, the connection between the clinical microbiology laboratory and antimicrobial stewardship, and how AI can help bridge the gap between laboratory data, institutional knowledge, and patient care. They also discuss evidence supporting these technologies, concerns surrounding AI hallucinations and clinical safety, and how clinical decision support may evolve in the years ahead. Tune in to learn how AI is changing the way clinical knowledge is accessed and what that could mean for the future of healthcare. This episode is brought to you in collaboration with Eolas Medical. Eolas Medical is a clinical knowledge platform founded by physician Dr. Declan Kelly, who saw firsthand how hard it can be to find trusted guidance at the point of care. Using AI grounded exclusively in an organization's own approved protocols and guidelines, Eolas gives clinicians fast, accurate answers instead of generic search results. It is used across 90% of acute NHS trusts and 600+ sites globally, including Stanford and Mass General Brigham. For antimicrobial stewardship, a peer-reviewed study published in Nature Portfolio's npj Antimicrobials and Resistance found prescribing accuracy improved from 47% to 100% with Ask Eolas at the point of care. Resources Eolas Medical: https://www.eolasmedical.com/ Study — Enhancing quality of antimicrobial prescribing through 'Ask Eolas' (language model): a user-testing and simulation evaluation: https://www.nature.com/articles/s44259-026-00187-7 Summary of study: Eolas Medical — Summary of the study and implications for antimicrobial stewardship Stay connected with Let's Talk Micro: Website: letstalkmicro.com Questions or feedback? Email me at letstalkmicro@outlook.com Interested in being a guest on Let's Talk Micro? Fill out the form here: https://forms.gle/V2fT3asjfyusmqyi8 Support the podcast: Venmo Buy me a Ko-fi
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About Let's Talk Micro
Clinical microbiology explained in simple terms, suitable for students and microbiologists alike. We discuss organisms, reactions, infectious diseases, and more. Hosted by Luis Plaza, a Medical Laboratory Scientist and microbiologist, who also shares his experiences in the field.
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