Cyclospora: The Medical Mystery Teaching Us How Outbreaks Are Solved.

Cyclospora: The Medical Mystery Teaching Us How Outbreaks Are Solved.

Most people hear about foodborne outbreaks only after they make the headlines. In this solo episode, Dr. Keisha Davis takes listeners behind the microscope to explain how pathologists, laboratorians, epidemiologists, and public health professionals solve disease outbreaks using the current Cyclospora outbreak as a real-world case study. From the parasite's life cycle to laboratory diagnosis, outbreak investigations, and public health surveillance, this episode reveals why seemingly simple foodborne illnesses can become remarkably complex medical mysteries. Rather than simply explaining one parasite, this episode teaches listeners how medicine follows clues—from a single organism under the microscope to protecting entire communities. In This Episode - Why Cyclospora outbreaks are uniquely difficult to investigate - Every outbreak leaves clues: incubation periods and epidemiology - How Cyclospora cayetanensis infects the small intestine - Understanding the parasite life cycle and prolonged symptoms - Why routine stool testing may miss Cyclospora - Modified acid-fast staining, molecular testing, and laboratory diagnosis - Why a negative test may simply be the wrong test - Why Bactrim works against Cyclospora - The FDA Cyclospora Task Force and outbreak investigations - Why fresh produce outbreaks are difficult to trace - What patients can do to reduce risk - Five lessons Cyclospora teaches us about medicine and public health Key Takeaway Medicine solves mysteries one clue at a time. Understanding how physicians, laboratories, and public health professionals work together helps us become better partners in our own healthcare. Connect With Us The Medical Collective Website: www.medical-collective.net Support: https://ko-fi.com/themedicalcollective Host: Dr. Keisha Davis, M.D. https://drkeishadavis.komi.io [https://drkeishadavis.komi.io] Resources Referenced Centers for Disease Control and Prevention (CDC) U.S. Food and Drug Administration (FDA) FDA Cyclospora Prevention, Response and Research Action Plan College of American Pathologists (CAP) CIDRAP Mayo Clinic Johns Hopkins Bloomberg School of Public Health American Society for Microbiology (ASM) Recommended Episodes What Patients May Be Missing Right Now: Supplements, 'Natural' Medicine, and Hidden Risks What Patients May Be Missing Right Now: The Return of Preventable Disease Why Doctors Can Disagree — And Both Be Right Diverse Doctors. One Mission.

What Patients May Be Missing Right Now: The Return of Preventable Disease

Prevention is one of medicine's greatest success stories—but only if people trust it enough to use it. In Part 2 of our series, What Patients May Be Missing Right Now, Dr. Keisha Davis is joined by Dr. Atoosa Kourosh and Dr. Sharon Smith for an honest conversation about vaccines, Vitamin K, measles, community immunity, and the growing challenges surrounding trust in preventive healthcare. Rather than focusing on fear or judgment, this episode explores why prevention has become more difficult to discuss, how misinformation has changed patient conversations, and why rebuilding trust may be one of the most important public health challenges of our generation. From newborn Vitamin K prophylaxis to measles outbreaks and community immunity, our physicians explain not only what prevention does—but why it matters before illness ever begins. In This Episode -Why vaccine conversations have changed over the past decade -Questions versus distrust: understanding vaccine hesitancy -The influence of social media and declining institutional trust -Why Vitamin K is given to newborns -Vitamin K deficiency bleeding (VKDB): risks and consequences -Why prevention often becomes a victim of its own success -Understanding measles transmission and why it remains one of the world's most contagious viruses -Community immunity and who depends on it -Measles complications, immune amnesia, and SSPE -Why infants, cancer patients, transplant recipients, and immunocompromised individuals remain especially vulnerable -Can trust in preventive medicine be rebuilt? -Practical ways physicians and patients can work together moving forward Key Takeaway -Prevention works best when it happens before disease occurs. Building trust through honest conversations, transparency, and evidence-based medicine helps protect not only individuals, but entire communities. Connect With Us The Medical Collective Website: www.medical-collective.net Support: https://ko-fi.com/themedicalcollective Host Dr. Keisha Davis, M.D. https://drkeishadavis.com Co-Host Dr. Atoosa Kourosh, M.D. https://www.doctoratoosa.com/ Co-Host Dr. Sharon Smith, M.D. Resources Referenced American Academy of Pediatrics (AAP) American College of Obstetricians and Gynecologists (ACOG) KFF Vaccine Integrity Project CIDRAP Johns Hopkins Mayo Clinic World Health Organization (WHO) National Foundation for Infectious Diseases (NFID) Recommended Episode What Patients May Be Missing Right Now: Supplements, "Natural" Medicine, and Hidden Risks Diverse Doctors. One Mission.

What Patients May Be Missing Right Now: Supplements, "Natural" Medicine, and Hidden Risks.

Many people assume that if something is labeled "natural," it must be safe. But natural does not always mean harmless. In this episode of The Medical Collective, Dr. Keisha Davis is joined by Dr. Atoosa Kourosh and Dr. Sharon Smith for a conversation about supplements, wellness culture, and the hidden risks that many patients never hear about. From herbal products and vitamins to social media health trends, we discuss what patients should know before adding supplements to their daily routine, why regulation can be challenging, and how some products can interact with prescription medications or even cause serious health complications. We also explore how physicians evaluate supplement use, who may actually benefit from supplementation, and how consumers can make more informed decisions in an increasingly crowded wellness marketplace. In This Episode What the term "natural" really means Why natural products can still cause harm Common misconceptions about supplements How supplements are regulated in the United States Marketing versus scientific evidence Quality control concerns and product variability Drug-supplement interactions Liver injury and other medical complications associated with supplements Special considerations during pregnancy Delays in diagnosis and treatment caused by reliance on unproven therapies How to evaluate supplement claims critically Third-party testing and quality certification Which patients may actually benefit from supplementation Key Takeaway Natural products can play a role in health and wellness, but they should be approached with the same level of thoughtfulness and caution as any other medical intervention. Being informed, asking questions, and discussing supplements with your healthcare team can help reduce unnecessary risks. Connect With Us The Medical Collective The Medical Collective Website https://www.medical-collective.net Subscribe to the Medical Collective Weekly Newsletter https://substack.com/@themedicalcollective?r=5b2k7j&utm_medium=ios&utm_source=profile&shareImageVariant=blur Support The Medical Collective https://ko-fi.com/themedicalcollective Host Dr. Keisha Davis, M.D. Dr. Keisha Davis https://drkeishadavis.komi.io Co-Hosts Dr. Atoosa Kourosh, M.D. Dr. Atoosa Kourosh https://www.doctoratoosa.com/ Dr. Sharon Smith, M.D. Dr. Sharon Smith https://sharonsmithmd.com/ Resources Referenced National Institutes of Health (NIH) Office of Dietary Supplements U.S. Food and Drug Administration (FDA) Mayo Clinic American College of Obstetricians and Gynecologists (ACOG) National Center for Complementary and Integrative Health (NCCIH) Additional Resources Discussed Australian Register of Therapeutic Goods (ARTG) Search Database https://www.tga.gov.au/products/regulations-all-products/about-australian-register-therapeutic-goods-artg/searching-australian-register-therapeutic-goods-artg NSF Supplement and Vitamin Certification Guide https://www.nsf.org/consumer-resources/articles/supplement-vitamin-certification Environmental Working Group (EWG) Consumer Resources https://www.ewg.org/apps/ Recommended Episode What Patients May Be Missing Right Now: The Return of Preventable Disease Follow The Medical Collective Diverse Doctors. One Mission.

Why Doctors Can Disagree - And Both Be Right

Have you ever received different recommendations from two doctors and wondered who was right? In this solo episode, Dr. Keisha Davis explores one of the most misunderstood aspects of modern medicine: why thoughtful, competent physicians can look at the same patient, the same information, and sometimes arrive at different conclusions. From second opinions and differential diagnoses to pathology reviews, cancer conferences, and treatment decisions, this episode explains how medicine often operates in probabilities rather than certainties. Dr. Davis discusses why disagreement does not automatically mean incompetence, why expertise and interpretation matter, and how collaborative discussion is actually built into the practice of medicine. Listeners will gain a better understanding of how physicians think, how diagnoses are formed, and why thoughtful disagreement can often be a sign that medicine is working exactly as intended. Topics Covered in This Episode • Why two doctors can disagree and both be right • The difference between disagreement and incompetence • How different physicians may have different information • Interobserver variability in medicine • Pathology, radiology, dermatology, psychiatry, and rheumatology examples • Generalist versus subspecialist expertise • Second opinions and subspecialty pathology review • Differential diagnoses and how physicians build possibilities • Diagnostic disagreement versus treatment disagreement • Risk tolerance in medicine • Different decision and treatment pathways • Cancer conferences and multidisciplinary care • Human factors in medicine • Experience, training, specialty perspective, and implicit bias • Red flags patients should watch for when physicians disagree • Tumor boards, peer review, and consensus panels • Why medicine intentionally creates opportunities for disagreement • Critical thinking versus echo chambers Key Takeaways • Medicine is often about judgment, probability, and interpretation rather than absolute certainty. • Two physicians may have different information, different expertise, or different perspectives on the same case. • Diagnostic disagreement is different from treatment disagreement. • Interobserver variability exists in many medical specialties. • Risk tolerance and treatment strategies can influence recommendations even when physicians agree on the diagnosis. • Second opinions are an important and valuable part of medical care. • Tumor boards, peer review, and multidisciplinary discussions exist because medicine was never designed for one person to know everything. • Thoughtful disagreement can strengthen patient care and improve outcomes. Resources • College of American Pathologists (CAP) • American Society for Clinical Pathology (ASCP) • United States and Canadian Academy of Pathology (USCAP) • Mayo Clinic • Johns Hopkins Medicine • STAT News • New England Journal of Medicine • JAMA • National Cancer Institute (NCI) Learn More The Medical Collective Website https://www.medical-collective.net Subscribe to the Medical Collective Weekly Newsletter https://substack.com/@themedicalcollective?r=5b2k7j&utm_medium=ios&utm_source=profile&shareImageVariant=blur Recommended Episode • What Doctors Really Mean by Normal Results Connect With Us Follow The Medical Collective for real conversations about health, medicine, public health, and pathology — where science meets real life. Diverse Doctors. One Mission.

What Hantavirus Teaches Us About Viruses

Most people think of viruses as things that simply cause a cold or flu. But viruses affect the body in dramatically different ways — from mild upper respiratory infections to clotting disorders, organ failure, cancer, immune dysfunction, and delayed neurological disease years after infection. In this solo episode, Dr. Keisha Davis breaks down what viruses actually do to the body from a pathology and public health perspective. Using recent conversations surrounding hantavirus as a starting point, this episode explores why some viruses stay localized, why others become deadly, how certain viruses trigger immune- mediated injury, and why some can remain dormant or even contribute to cancer development years later. Dr. Davis also explains the "recipe" behind catastrophic outbreaks — including transmissibility, virulence, immune evasion, environmental exposure, and human behavior — while helping listeners understand the difference between fear and preparedness. Topics Covered in This Episode • What a virus actually is • Viral replication and how viruses hijack human cells • Viral cytopathic effect and what pathologists see under the microscope • Why viruses affect different organs and tissues • Common cold viruses vs severe respiratory viruses • Hantavirus pulmonary syndrome and vascular endothelial injury • New World vs Old World hantaviruses • Neurotropic viruses and nervous system involvement • Liver-tropic viruses and chronic inflammation • Dormancy and latency in herpes viruses • Why some viruses remain in the body for life • The "catastrophic recipe" behind outbreaks • R0 (basic reproductive number) explained • Transmissibility vs virulence • Immune evasion and immune amnesia • COVID-19, clotting, and immune-mediated injury • Why some viruses cause cancer • HPV, EBV, HHV-8, Hepatitis B/C, and oncogenic viruses • Delayed viral effects and post-viral syndromes • Wastewater surveillance and public health monitoring • Fear vs preparedness in infectious disease Key Takeaways • Not all viruses behave the same way in the body • Some viruses primarily damage cells directly, while others trigger harmful immune responses • Organ preference matters — different viruses target different tissues • Hantavirus demonstrates how endothelial injury can lead to severe disease • Some viruses remain dormant and reactivate years later • Certain viruses contribute directly to cancer development • Public health outcomes are shaped by both biology and human behavior • Understanding viruses helps reduce panic and improve preparedness Resources • College of American Pathologists (CAP) • CIDRAP • Johns Hopkins Bloomberg School of Public Health • Mayo Clinic Laboratories • STAT News • World Health Organization (WHO) • American Society for Clinical Pathology (ASCP) • Pathology Outlines • USCAP Learn More The Medical Collective Website https://www.medical-collective.net Subscribe to the Medical Collective Weekly Newsletter https://substack.com/@themedicalcollective?r=5b2k7j&utm_medium=ios&utm_so urce=profile&shareImageVariant=blur Recommended Episodes • HPV: Beyond Cervical Cancer • Measles — What They Really Do in the Body • Colon Cancer Screening: What Tests Actually Work • What Doctors Really Mean by "Normal Results" Connect With Us Follow The Medical Collective for real conversations about health, medicine, public health, and pathology — where science meets real life. Diverse Doctors. One Mission.