204: In the Bloodstream: Diagnosing Infections Faster
Let's Talk Micro
Bloodstream infections can progress rapidly to sepsis—bringing high costs, high mortality, and lasting effects. In the second episode of this series in collaboration with bioMérieux, Luis speaks with Dr. Jeff Cies, Senior Medical Advisor at bioMérieux, about how molecular diagnostics are reshaping bloodstream infection diagnosis. They discuss: Limitations of traditional blood cultures How rapid molecular tests deliver results faster than ever The impact on outcomes, costs, and antimicrobial resistance The role of stewardship programs in maximizing results What the future...
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203: What’s New with Brucella?
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Brucella is a familiar name in the lab—but recent updates to the sentinel guidelines are reshaping how we approach this pathogen. In this episode, I’m joined by Dr. Laura Filkins and Dr. Paige Larkin to discuss the latest changes: updates in nomenclature, the removal of certain Brucella species from the select agent list, and the renewed emphasis on safety in the lab. We dive into taxonomy controversies, clinical features of brucellosis, and practical steps laboratorians can take to protect themselves while delivering accurate results. Whether you’re a student, laboratorian, or...
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202: AI vs. Superbugs: Can AI Help?
Let's Talk Micro
Antimicrobial resistance (AMR) continues to grow as a global health threat, making infections harder to treat and leaving fewer options for patients. The need for new antibiotics is an urgent matter — but traditional discovery methods are slow and limited. In this episode of Let’s Talk Micro, Luis is joined by Dr. James Collins, professor at MIT and researcher at the Broad Institute, who is leading efforts to apply AI to antibiotic discovery. We discuss how his team used deep learning to uncover promising new compounds, including NG1 and DN1, which showed activity against drug-resistant...
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201: Spotlight: Rethinking AST-Disk Diffusion on Early Growth
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Last week, we discussed early growth isolates for antimicrobial susceptibility testing (AST) and the importance of obtaining results sooner. This week, we revisit an earlier study that looked at early growth but using disk diffusion. In this episode, I was joined by Dr. Carey-Ann Burnham, Dr. Daniel Webber, and Meghan Wallace to discuss their work. Tune in to hear how this approach could help deliver AST results faster, the challenges of adopting early growth methods, and what it means for clinical microbiology labs. This episode was originally released in 2022 (Episode 39: “Talking disk...
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200: Early Growth, Faster Answers: Rethinking AST
Let's Talk Micro
In this episode of Let’s Talk Micro, Dr. Jennifer Dien Bard and Dr. Lucas Osborn discuss their recent study on early growth antimicrobial susceptibility testing (AST). Traditional AST often requires 18–24 hours of incubation of isolates, delaying targeted treatment. Their research shows that using 6-hour early growth isolates with both automated and manual methods delivers accurate results up to 18 hours faster—without added costs or specialized equipment. The conversation explores the study design, agreement rates with standard methods, and what faster AST means for patient care and...
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199: Antibiotics: What’s New in Treatment
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This week, Luis is joined by Dr. Ashlan Kunz-Coyne to discuss some of the newest antibiotics for urinary tract infections (UTIs). They explore why extended-spectrum beta-lactamases (ESBLs) are a growing concern, the impact of E. coli sequence type 131, and where new agents like cefepime–enmetazobactam, sulopenem, and tebipenem fit into treatment. The conversation also highlights clinical data, stewardship considerations, and how the infectious diseases and microbiology communities can work together to preserve these options. Plus, Dr. Kunz-Coyne reveals her favorite bug—Stenotrophomonas...
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198: Let’s Talk: The Evolution of AST
Let's Talk Micro
Season 5 premieres today! Antimicrobial susceptibility testing (AST) is essential for guiding effective treatment—but how has it evolved, and what challenges are we still facing? In the first episode of this series in collaboration with bioMérieux, Dr. Andrea Prinzi joins Let’s Talk Micro to explore the evolution of AST—from early methods to modern platforms like VITEK 2. We discuss the known issue of outdated breakpoints in clinical practice, the challenges with regulatory hurdles, and the impact of the 21st Century Cures Act. What is the Cures Act, and how does it affect the way...
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TBT: Talking Breakpoints with Dr. Andrea Prinzi
Let's Talk Micro
This episode of Let’s Talk Micro features Dr. Andrea Prinzi, a clinical microbiologist and frequent contributor to the American Society for Microbiology. Andrea joins the podcast to discuss a critical topic in clinical microbiology: antimicrobial susceptibility testing and breakpoints. Are labs using outdated breakpoints—and what does that mean for patient care? How are breakpoints determined and updated? Dr. Prinzi breaks it all down and shares insights from her article on the subject. Tune in to learn why staying current on breakpoints matters and what steps labs can take to improve...
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TBT: Clinical Microbiology Procedures Handbook
Let's Talk Micro
The Clinical Microbiology Procedures Handbook (CMPH) has long been a trusted resource for laboratories. With the release of its 5th edition, this essential reference continues to guide clinical microbiologists through evolving standards, methods, and best practices. In this episode, Luis is joined by the editors‑in‑chief, Dr. Amy Leber and Dr. Carey‑Ann Burnham, to explore what’s new in the latest edition, how the CMPH supports day‑to‑day work in the lab, and why it remains a cornerstone in clinical microbiology. (Originally published May 4, 2023.) Check out the website: ...
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195: Diabetic Wound Cultures: From Chaos to Clarity in the Micro Lab
Let's Talk Micro
This week, Luis is joined by Dr. Christopher Doern from VCU Health to explore the complex world of diabetic wound cultures. How does diabetes impair wound healing—and what makes these infections so difficult to diagnose and treat? Dr. Doern dives into the microbiology behind diabetic foot wounds, highlighting the impact of bacterial diversity, specimen quality, and the limitations of traditional culture methods. He also shares best practices for workup strategies and antibiotic selection in these often polymicrobial infections. Link to studies mentioned in the episode: Want to be...
info_outlineA great conversation between three microbiologists! In this episode Luis is joined by Kelli Maddock and Jessica D'Angelo to talk about their careers. Kelli is a previous guest and is currently a section head in microbiology. Jessica is a microbiology supervisor. What inspired them to pursue a career in the laboratory and microbiology? What challenges have they encountered? What is their favorite bug?
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