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This Week in Virology

Vincent Racaniello
This Week in Virology
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202 episodios

  • This Week in Virology

    TWiV 1321: Phage cross talk and cross reactions

    10/05/2026 | 1 h 52 min
    TWiV explains how cross-reactive anti-prophage antibodies and bacterial heteroresistance is implicated in phage therapeutic failure, and how phages communicate across species to shape microbial ecosystems.
    Hosts: Vincent Racaniello, Rich Condit, Brianne Barker, and Jolene Ramsey
    Subscribe (free): Apple Podcasts, RSS, email
    Become a patron of TWiV!
    Links for this episode
    Support science education at MicrobeTV
    Positions in Rosenfeld Lab (email)
    Craig Venter dies (Nature)
    Hantavirus outbreak (WHO)
    Hantavirus on board (YouTube)
    HPS 25th anniversary discovery story (EID)
    Phage therapeutic failure unraveled (Nat Med)
    Phages communicate across species (Cell)
    Control of lysis-lysogeny decisions (Trends Micro)
    Arbitrium phages manipulate each other (Cell)
    Elio Schaechter on arbitrium (TWiM 146)
    Letters read  on TWiV 1321
    Timestamps by Jolene Ramsey. Thanks!
    Weekly Picks
    Brianne – Could this fungus contaminate Mars?
    Rich – Supernova in a Sideways Spiral
    Jolene – Virology class communication projects 2026
    Vincent – Facts About The Boeing 747 Hump That Will Surprise You
    Listener Picks
    David – My first science video in 3 years

    Intro music is by Ronald Jenkees
    Send your virology questions and comments to [email protected]
    Content in this podcast should not be construed as medical advice.
  • This Week in Virology

    TWiV 1320: Clinical update with Dr. Daniel Griffin

    09/05/2026 | 44 min
    In his weekly clinical update, Dr. Griffin and Vincent Racaniello discuss the outbreak of Hantavirus on a cruise ship and its potential for person-person transmission, how cessation of funding for global health by the Trump administration has compromised American health and well being, as well as the description of paralytic poliomyelitis outbreaks in Central Africa associated with the administration of nOPV2, before Dr. Griffin deep dives into the measles outbreak, recent statistics RSV, influenza and SARS-CoV-2 infections, the Wasterwater Scan dashboard, Johns Hopkins measles tracker, association of ear infections in children with RSV, PEMGARDA authorized use for certain immunocompromised individuals where to find PEMGARDA, how to access and pay for Paxlovid, where to go for answers about long COVID-19, multisystem inflammatory syndrome in children and contacting your federal government representative to stop the assault on science and biomedical research.
    Subscribe (free): Apple Podcasts, RSS, email
    Become a patron of TWiV!
    Links for this episode
    Hantavirus Pulmonary Syndrome—The 25th Anniversary of the Four Corners Outbreak (CDC: Emerging Infectious Diseases)
    Outbreak of Hantavirus Infection in the Four Corners Region of the United States in the Wake of the 1997–1998 El Nino—Southern Oscillation (JID)
    Person-to-Person Transmission of Andes Virus in Hantavirus Pulmonary Syndrome, Argentina, 2014 (CDC: Emerging Infectious Diseases)
    Hantavirus cluster linked to cruise ship travel, Multi-country (WHO)
    Hantavirus (WHO)
    Ventilation Upgrade Reduces Fuel Consumption by 10 Percent in Cruise Ships(Halton)
    Person-to-Person Transmission of Andes Virus in Hantavirus Pulmonary Syndrome, Argentina, 2014 (CDC: Emerging Infectious Diseases)
    Incubation Period of Hantavirus Cardiopulmonary Syndrome (CDC: Emerging Infectious Diseases)
    At least 8 sickened in suspected hantavirus outbreak; Andes strain confirmed
    (CIDRAP)
    Hantavirus in humans: a review of clinical aspects and management (LANCET: Infectious Diseases)
    Cruise ship’s hantavirus outbreak puts researchers in uncharted territory (Science)
    Hantavirus Response Shows How Trump Cuts Have Compromised U.S. Preparedness (NY Times)
    Hantavirus on board with Prof. Vincent Racaniello (microbeTV)
    Emergence of vaccine-derived poliovirus strains from the novel oral polio vaccine in the Central African Republic (mBio)
    TWiV 1319: An earful of SARS-CoV-2 (microbeTV)
    Poliomyelitis (polio) (WHO)
    The world’s largest and ​highest-quality​​ first-party data company (Dynata)
    MMR vaccine hesitancy in a polarized information ecosystem: Results from a cross-sectional survey of US adults (Vaccine)
    CDC communication undermines trust in vaccines (Science)
    F.D.A. Blocked Publication of Research Finding Covid and Shingles Vaccines Were Safe (NY Times)
    Tick Bite Data Tracker (CDC: Ticks)
    Infectious Diseases (POPHIVE: Yale School of Public Health)
    The National Respiratory and Enteric VirusSurveillance System (NREVSS) (CDC: National Respiratory and enteric virus surveillance System)
    Wastewater for measles (WasterWater Scan)
    Measles cases and outbreaks (CDC Rubeola)
    Big outbreak, bright lights…Measles Dashboard (South Carolina Department of Public Health)
    Utah measles outbreak response (Utah Department of Health and Human Services)
    Utah Measles Dashboard (Utah Department of Health and Human Services)
    Tracking Measles Cases in the U.S. (Johns Hopkins)
    Measles vaccine recommendations from NYP (jpg)
    Weekly measles and rubella monitoring (Government of Canada)
    Measles (WHO)
    Get the FACTS about measles (NY State Department of Health)
    Measles vaccine (CDC Measles (Rubeola))
    Presumptive evidence of measles immunity (CDC)
    Contraindications and precautions to measles vaccination (CDC)
    Measles (CDC Measles (Rubeola))
    Adverse events associated with childhood vaccines: evidence bearing on causality (NLM)
    Measles Vaccination: Know the Facts (ISDA: Infectious Diseases Society of America)
    Deaths following vaccination: what does the evidence show (Vaccine)
    Will the USA lose its measles elimination status? (LANCET)
    Influenza: Waste water scan for 11 pathogens (WastewaterSCan)
    US respiratory virus activity (CDC Respiratory Illnesses)
    Respiratory virus activity levels (CDC Respiratory Illnesses)
    Flu vaccine recommendations: Vaccines and Related Biological Products Advisory Committee March 12, 2026 Meeting Announcement (FDA)
    WHO updates all 3 viral strains to be included in fall flu shots (CIDRAP)
    FDA vaccine advisers recommend adding subclade K to fall shots (CIDRAP)
    Weekly surveillance report: cliff notes (CDC FluView)
    OPTION 2: XOFLUZA $50 Cash Pay Option(xofluza)
    RSV: Waste water scan for 11 pathogens (WastewaterSCan)
    Respiratory Diseases (Yale School of Public Health)
    US respiratory virus activity (CDC Respiratory Illnesses)
    RSV-Network (CDC Respiratory Syncytial virus Infection)
    Vaccines for Adults (CDC: Respiratory Syncytial Virus Infection (RSV))
    Economic Analysis of Protein Subunit and mRNA RSV Vaccination in Adults aged 50-59 Years (CDC: ACIP)
    Respiratory Diseases (Yale School of Public Health)
    Impact of Respiratory Syncytial Virus Immunization on the Rate of Pediatric Acute Otitis Media: A Time-series Analysis (CID)
    Waste water scan for 11 pathogens (WastewaterSCan)
    COVID-19 deaths (CDC)
    Respiratory Illnesses Data Channel (CDC: Respiratory Illnesses)
    COVID-19 national and regional trends (CDC)
    COVID-19 variant tracker (CDC)
    SARS-CoV-2 genomes galore (Nextstrain)
    Where to get pemgarda (Pemgarda)
    EUA for the pre-exposure prophylaxis of COVID-19 (INVIYD)
    Infusion center (Prime Fusions)
    CDC Quarantine guidelines (CDC)
    NIH COVID-19 treatment guidelines (NIH)
    Drug interaction checker (University of Liverpool)
    Help your eligible patients access PAXLOVID with the PAXCESS Patient Support Program (Pfizer Pro)
    Understanding Coverage Options (PAXCESS)
    Infectious Disease Society guidelines for treatment and management (ID Society)
    Molnupiravir safety and efficacy (JMV)
    Convalescent plasma recommendation for immunocompromised (ID Society)
    What to do when sick with a respiratory virus (CDC)
    Managing healthcare staffing shortages (CDC)
    Anticoagulation guidelines (hematology.org)
    Daniel Griffin’s evidence based medical practices for long COVID (OFID)
    Long COVID hotline (Columbia : Columbia University Irving Medical Center)
    The answers: Long COVID
    Multisystem inflammatory syndrome in children (MIS-C), United States, 2023–2024 (CID)
    Current status and future perspectives on the mechanistic and pathophysiological understanding of long COVID (Communications Medicine)
    Reaching out to US house representative
    Letters read on TWiV 1320
    Dr. Griffin’s COVID treatment summary (pdf)
    Timestamps by Jolene Ramsey. Thanks!
    Intro music is by Ronald Jenkees
    Send your questions for Dr. Griffin to [email protected]
    Content in this podcast should not be construed as medical advice.
  • This Week in Virology

    TWiV 1319: An earful of SARS-CoV-2

    03/05/2026 | 1 h 43 min
    TWiV explains the emergence of vaccine-derived poliovirus strains from the novel oral polio vaccine in the Central African Republic, and the infection of spiral ganglion neurons in the inner ear by SARS-CoV-2, which may explain hearing loss in humans.
    Hosts: Vincent Racaniello, Alan Dove, and Kathy Spindler
    Subscribe (free): Apple Podcasts, RSS, email
    Become a patron of TWiV!
    Links for this episode
    Support science education at MicrobeTV
    Positions in Rosenfeld Lab (email)
    Bernard Roizman dies (U Chicago)
    Craig Venter dies (Sci Am)
    Trump fires National Science Board (AAU)
    It was World Vaccine Week (WHO)
    nOPV2 phenotypically reverts via recombination (mBio)
    SARS-CoV-2 infects inner ear (Cell Rep)
    Letters read  on TWiV 1319
    Timestamps by Jolene Ramsey. Thanks!
    Weekly Picks
    Kathy – Science of rats and other organisms in the East River
    Alan – Chronolog citizen science project
    Vincent – Why Do Train Engines Sometimes Face Backwards?
    Listener Picks
    Chris – Consensus: AI for research

    Intro music is by Ronald Jenkees
    Send your virology questions and comments to [email protected]
    Content in this podcast should not be construed as medical advice.
  • This Week in Virology

    TWiV 1318: Clinical update with Dr. Daniel Griffin

    02/05/2026 | 1 h 8 min
    In his weekly clinical update, Dr. Griffin and Vincent Racaniello note the uncertain future of the National Science Foundation amid shifting U.S. funding priorities and governance; the rise of China as a global research powerhouse; ongoing advances and controversies in vaccines shaped by the World Health Organization and the Centers for Disease Control and Prevention; vaccine policy battles in Florida; European approval of the moderna mCOMBRIAX, COVID-19 and influenza vaccine, the mounting evidence supporting preventive vaccination strategies including that for HPV and the HepB birth dose; the spread of drug-resistant infections and the resurgence of HIV in Zambia; and the enduring public trust in scientists despite political turbulence, before Dr. Griffin deep dives into the measles outbreak, recent statistics RSV, influenza and SARS-CoV-2 infections, the Wasterwater Scan dashboard, Johns Hopkins measles tracker, the efficacy of the influenza vaccine for children, PEMGARDA authorized use for certain immunocompromised individuals where to find PEMGARDA, how to access and pay for Paxlovid, use of remdesivir for RSV, how administration of Paxlovid did not affect hospitalization of high-risk vaccinated patients, where to go for answers about long COVID-19, if SARS-CoV-2 infection may facilitate EBV reactivation, exercise for treating long COVID and contacting your federal government representative to stop the assault on science and biomedical research.
    Subscribe (free): Apple Podcasts, RSS, email
    Become a patron of TWiV!
    Links for this episode
    Entire NSF science advisory board fired by Trump administration (Nature)
    United States v. Arthrex, Inc.(Harvard Law Review)
    United States v. Arthrex Inc. [SCOTUSbrief] (Federalist Society)
    China could be the world’s biggest public funder of science within two years (Nature)
    The Vaccine Skeptic in Trump’s New C.D.C. Leadership Team (NY Times)
    World Immunization week: Largest catch-up initiative delivers over 100 million childhood vaccinations (WHO)
    Pigs are flying!: Florida Republicans refuse to take up DeSantis bill loosening vaccine mandates (NY Times)
    Moderna Receives European Commission Marketing Authorization for mCOMBRIAX, Moderna’s mRNA Combination Vaccine Against Influenza and COVID-19(moderna)
    America First! AIDS Creeps Back in Parts of Zambia, a Year After U.S. Cuts to H.I.V. Assistance (NY Times)
    Emergence of Extensively Drug-Resistant Shigellosis — United States, 2011–2023 (CDC: MMWR)
    Scientists Esteemed by Public, with Vaccine Scientists Seen as Similar to Scientists in General (Annenberg: Public Policy Center, University of Pennsylvania)
    RFK Jr. is holding up $600M in vaccines for poor countries (Politico)
    Trump Withdraws Nomination of Casey Means for Surgeon General (NY Times)
    What? Benefit of preventive strategies like vaccination? Incidence of human papillomavirus infections in women aged 27 years and older in the US: A federated data network study (International Journal of Infectious Diseases)
    Economic Impact of Delaying the Infant Hepatitis B Vaccination Schedule (JAMA Pediatrics)
    Impact of Removing the Universal Hepatitis B Birth-Dose Vaccination in the US (JAMA Pediatrics)
    Wastewater for measles (WasterWater Scan)
    Measles cases and outbreaks (CDC Rubeola)
    Measles Dashboard (South Carolina Department of Public Health)
    Utah measles outbreak response (Utah Department of Health and Human Services)
    Utah Measles Dashboard (Utah Department of Health and Human Services)
    Tracking Measles Cases in the U.S. (Johns Hopkins)
    Measles vaccine recommendations from NYP (jpg)
    Weekly measles and rubella monitoring (Government of Canada)
    Measles (WHO)
    Get the FACTS about measles (NY State Department of Health)
    Measles (CDC Measles (Rubeola))
    Measles vaccine (CDC Measles (Rubeola))
    Presumptive evidence of measles immunity (CDC)
    Contraindications and precautions to measles vaccination (CDC)
    Adverse events associated with childhood vaccines: evidence bearing on causality (NLM)
    Measles Vaccination: Know the Facts (ISDA: Infectious Diseases Society of America)
    Deaths following vaccination: what does the evidence show (Vaccine)
    Dangers of measles infection (NY Times)
    Influenza: Waste water scan for 11 pathogens (WastewaterSCan)
    US respiratory virus activity (CDC Respiratory Illnesses)
    Respiratory virus activity levels (CDC Respiratory Illnesses)
    Flu vaccine recommendations: Vaccines and Related Biological Products Advisory Committee March 12, 2026 Meeting Announcement (FDA)
    WHO updates all 3 viral strains to be included in fall flu shots (CIDRAP)
    FDA vaccine advisers recommend adding subclade K to fall shots (CIDRAP)
    Weekly surveillance report: cliff notes (CDC FluView)
    OPTION 2: XOFLUZA $50 Cash Pay Option (Xofluza)
    Influenza Vaccination Coverage Among Nursing Home Residents and Health Care Personnel — United States, 2024–25 Influenza Season (CDC: MMWR)
    Pediatric Vaccine Effectiveness Against Influenza Hospitalization And Outpatient Visits: 2021–2024 (Pediatrics)
    Influenza Vaccine Effectiveness in European Primary Care Pediatric Practices: 2022–2024 (Pediatrics)
    RSV: Waste water scan for 11 pathogens (WastewaterSCan)
    Respiratory Diseases (Yale School of Public Health)
    USrespiratory virus activity (CDC Respiratory Illnesses)
    RSV-Network (CDC Respiratory Syncytial virus Infection)
    Vaccines for Adults (CDC: Respiratory Syncytial Virus Infection (RSV))
    Economic Analysis of Protein Subunit and mRNA RSV Vaccination in Adults aged 50-59 Years (CDC: ACIP)
    Respiratory Diseases (Yale School of Public Health)
    Impact of universal nirsevimab prophylaxis in infants on hospital and primary care outcomes across two respiratory syncytial virus seasons in Galicia, Spain (NIRSE-GAL): a population-based prospective observational study (LANCET: Infectious Diseases)
    First Report on Remdesivir Use for the Treatment of Respiratory Syncytial Virus in Five Allogeneic Hematopoietic Cell Transplant Recipients (JID)
    Waste water scan for 11 pathogens (WastewaterSCan)
    COVID-19 deaths (CDC)
    Respiratory Illnesses Data Channel (CDC: Respiratory Illnesses)
    COVID-19 national and regional trends (CDC)
    COVID-19 variant tracker (CDC)
    SARS-CoV-2 genomes galore (Nextstrain)
    Where to get pemgarda (Pemgarda)
    EUA for the pre-exposure prophylaxis of COVID-19 (INVIYD)
    Infusion center (Prime Fusions)
    CDC Quarantine guidelines (CDC)
    NIH COVID-19 treatment guidelines (NIH)
    Oral Nirmatrelvir–Ritonavir for Covid-19 in Higher-Risk Outpatients(NEJM)
    Same Pill, Different Impact — Reassessing the Efficacy of Nirmatrelvir–Ritonavir(NEJM)
    Paxlovid doesn’t reduce hospitalization, death rates in vaccinated high-risk COVID outpatients, trial shows (CIDRAP)
    Drug interaction checker (University of Liverpool)
    Help your eligible patients access PAXLOVID with the PAXCESS Patient Support Program (Pfizer Pro)
    UnderstandingCoverage Options (PAXCESS)
    Infectious Disease Society guidelines for treatment and management (ID Society)
    Molnupiravir safety and efficacy (JMV)
    Convalescent plasma recommendation for immunocompromised (ID Society)
    What to do when sick with a respiratory virus (CDC)
    Managing healthcare staffing shortages (CDC)
    Anticoagulation guidelines (hematology.org)
    Daniel Griffin’s evidence based medical practices for long COVID (OFID)
    Long COVID hotline (Columbia: Columbia University Irving Medical Center)
    The answers: Long COVID
    Acute COVID-19 is associated with altered CD8 T-cells indicative of impaired ability to control Epstein–Barr virus reactivation (Medical Microbiology and Immunology)
    Exercise and Weekly Sirolimus (Rapamycin) in Older Adults: RAPA-EX-01 Randomised, Double-Blind, Placebo-Controlled Trial (Journal of Cachexia, Sarcopenia and Muscle)
    Reaching out to US house representative
    Letters read on TWiV 1318
    Dr. Griffin’s COVID treatment summary (pdf)
    Timestamps by Jolene Ramsey. Thanks!
    Intro music is by Ronald Jenkees
    Send your questions for Dr. Griffin to [email protected]
    Content in this podcast should not be construed as medical advice.
  • This Week in Virology

    TWiV 1317: Dead shrimp walking

    26/04/2026 | 1 h 41 min
    TWiV explains a study showing that viral DNA load in blood and saliva varied markedly with age, time of day season, sex, and depended on dozens of genetic loci, and identification of an emerging human eye disease associated with aquatic virus zoonotic infection.
    Hosts: Vincent Racaniello, Alan Dove, Rich Condit, and Brianne Barker
    Subscribe (free): Apple Podcasts, RSS, email
    Become a patron of TWiV!
    Links for this episode
    Support science education at MicrobeTV
    Positions in Rosenfeld Lab (email)
    DNA virome varies with human genes and environments (Nature)
    Emerging eye infection from aquatic virus (Nat Micro)
    Letters read  on TWiV 1317
    Timestamps by Jolene Ramsey. Thanks!
    Weekly Picks
    Brianne – Wayback Machine: Internet Archive
    Rich – Grandparents for Vaccines
    Alan – On Writing by Stephen King
    Vincent – The Real Reason The Soviets Lost The Space Race!
    Listener Picks
    Ginny – Dr. Cal Your Science Pal

    Intro music is by Ronald Jenkees
    Send your virology questions and comments to [email protected]
    Content in this podcast should not be construed as medical advice.

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