This Week in Virology

Jon Yewdell returns to TWiV to discuss how antibodies are made, vaccination against SARS-CoV-2, antigenic variation of the virus, booster shots, and more. Hosts:  Vincent Racaniello , Dickson Despommier , Rich Condit , and Brianne Barker Guest: Jon Yewdell Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode Jon Yewdell on TWiV 208 , 467 ,...

In COVID-19 clinical update #98, Daniel Griffin reviews COVID-19 in South Africa, recognition of Omicron by ancestral T cells, booster effectiveness against disease, infection and vaccination in pregnant women, early Remdesivir to prevent progression to severe disease, management of hospitalized adults, Tocilizumab in hospitalized patients, vaccination and long COVID, and the true toll of the pand...

Alessandro Sette returns to TWiV to discuss the observation that SARS-CoV-2 vaccination induces T cells that are able to cross-recognize variants Alpha to Omicron. Hosts:  Vincent Racaniello , Rich Condit , Kathy Spindler , and Brianne Barker Guest: Alessandro Sette Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode Travel Award Applicati...

TWiV reviews findings that increased fitness of the Omicron variant is due to immune evasion, not an increase in intrinsic transmissibility, and determination of infectious viral load in patients infected with wild type, Delta and Omicron viruses reveals lack of correlation with RNA loads determined by RT-PCR, similar levels of shedding among Delta and Omicron, and greatly reduced shedding in vacc...

In COVID-19 clinical update #97, Daniel Griffin covers immunity after infection recognized by CDC, outcomes before and after Omicron, infectious viral load in Delta vs Omicron, PCR vs rapid antigen tests, booster interval shortened to 5 months, risk factors for severe outcomes in vaccinated, cross-reactive memory T cells, vaccine effectiveness vs MIS-C, and Rivaroxiban for thromboprophylaxis. Subs...

A TWiV threesome explains the observation that humans with inherited T cell CD28 deficiency are susceptible to severe warts driven by human papilloma virus infection, but are otherwise healthy. Hosts:  Vincent Racaniello , Rich Condit , and Brianne Barker Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode Vaccine Town Hall ( ASV ) Travel...

The TWiV team reviews the observation that infection with the SARS-CoV-2 Omicron variant causes reduced reproduction and pathogenesis in mice and hamsters. Hosts:  Vincent Racaniello , Dickson Despommier , Rich Condit , Brianne Barker , and Amy Rosenfeld Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode Vaccine Town Hall ( ASV ) Travel A...

In COVID-19 clinical update #96, Daniel Griffin reviews Omicron in South Africa, rapid antigen tests, viral coinfections, isolation and quarantine, saliva preferred for Omicron, risk factors for severe disease in vaccinated, Paxlovid dosing, and long COVID. Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode Variant proportions (CDC) Omicr...

TWiV kicks off 2022 with a review of the virology highlights of 2021, from three virologists, one immunologist, a science writer, and a partridge in a pear tree. Hosts:  Vincent Racaniello , Alan Dove , Rich Condit , Kathy Spindler , and Brianne Barker Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode COVID vaccines: TWiV 708, 715, 718,...

For the final episode of 2021, TWiV reviews an experimental infectious attenuated Lassa fever vaccine based on a codon-deoptimized glycoprotein gene, and SARS-CoV-2 infection of free-ranging white-tailed deer. Hosts:  Vincent Racaniello , Dickson Despommier , Alan Dove , Kathy Spindler , and Brianne Barker Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Link...

In COVID-19 clinical update #95, Daniel Griffin discusses new CDC guidelines for isolation and quarantine, EUA for Molnupiravir, children and COVID, vaccine safety in 5-11 year olds, Omicron outbreaks in Nebraska and Denmark, Baylor's COVID vaccine, and COVID-OUT for ivermectin. Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode Isolation...

TWiV explores the impact of the intestinal virome on seroconversion after rotavirus vaccination, and implications of the ability of the SARS-CoV-2 beta variant to infect wild-type laboratory mice. Hosts:  Vincent Racaniello , Alan Dove , Rich Condit , Kathy Spindler , and Brianne Barker Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode I...

In COVID-19 clinical update #94, Daniel Griffin reviews the FDA EUA for Paxlovid, test to stay in school, immunity after infection, variants and therapeutics, quarantine and isolation guidelines, Molnupiravir in non-hospitalized patients, and convalescent serum in outpatients. Hosts:  Daniel Griffin and Vincent Racaniello Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patro...

Paul Offit returns to TWiV to discuss new CDC guidance on J&J vaccine, why children should be immunized against COVID-19, and whether or not booster doses are scientifically justified. Hosts:  Vincent Racaniello , Dickson Despommier , and Brianne Barker Guest: Paul Offit Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode Paul Offit on TWi...

In COVID-19 clinical update #93, Dr. Griffin summarizes Omicron fitness, S-gene target failure, monoclonal efficacy against Omicron, vaccination, monoclonals, and disease in children, persistence of memory B cells in the elderly, infection and vaccine induced immunity, protection against severe illness and death by a third mRNA vaccine dose, high flow oxygen versus intubation, and therapeutic anti...

TWiV reviews the results of serum neutralization assays which show that a third vaccine dose restores neutralization of the Omicron variant, and interaction of platelet factor 4 with the adenovirus capsid, suggesting a mechanism for thrombosis with thrombocytopenia syndrome. Hosts:  Vincent Racaniello , Kathy Spindler , and Brianne Barker Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  emai...

TWiV provides an update on immunity to Omicron, results of a randomized controlled trial of face masks, and a study of correlates of protection against respiratory syncytial virus infection in the upper and lower respiratory tract of nonhuman primates. Hosts:  Vincent Racaniello , Dickson Despommier , Rich Condit , and Amy Rosenfeld Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Beco...

In COVID-19 clinical update #92, Dr. Griffin reviews emerging data on the Omicron variant, much information about monoclonal antibody treatment, including expansion of EUA for Lilly's cocktail, FDA EUA for pre-exposure prophylaxis, outcomes after treatment, and investigation of subcutaneous or intramuscular administration; effect of adding immunomodulatory agents to usual care on thromboembolic ev...

TWiV reviews the impact of vaccination on SARS-CoV-2, the latest information on Omicron, West Nile virus transmission by organ transplantation, and why a 16 week interval between doses of BNT162b2 vaccine is better than a shorter interval. Hosts:  Vincent Racaniello , Alan Dove , Rich Condit , and Kathy Spindler Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV...

The New York City Virus Hunters join TWiV to reveal how local students engage in safe virus surveillance and conduct science research right in their neighborhoods, followed by an update on variant of concern Omicron. Hosts:  Vincent Racaniello , Dickson Despommier , Rich Condit , and Brianne Barker Guests: Teresa Bautista, Isabel Francisco, Jesus Gonzales, Joel Gonzalez, Florian Krammer , and Chri...

In COVID-19 clinical update #91, Dr. Griffin discusses final results of molnupiravir trial, Omicron variant of concern, outcomes in B-cell depleted patients, recovery in T-cell depleted macaques, peptide for induction of T cell immunity, high respiratory viral RNA loads in infants, IgA and T cells transferred to breast milk after vaccination, sensitivity and specificity of ID NOW, post-acute seque...

TWiV reveals all that we know so far about the variant of concern B.1.1.529, also called Omicron, and describes a study on the ability of the alpha, beta, and delta variants to reproduce in cells in culture and induce membrane fusion. Hosts:  Vincent Racaniello , Alan Dove , Kathy Spindler , and Brianne Barker Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV!...

TWiV reviews why children should be vaccinated against COVID-19, increased risk of infection with SARS-CoV-2 Beta, Gamma, and Delta variant compared to Alpha variant in vaccinated but not recovered individuals, and immune correlates of protection from the mRNA-1273 vaccine efficacy trial. Hosts:  Vincent Racaniello , Dickson Despommier , and Brianne Barker Subscribe (free):  iTunes ,  Google Podca...

In COVID-19 clinical update #90, Dr. Griffin covers FDA expansion for booster doses, 3 more at home antigen tests approved by FDA, immune correlates analysis of mRNA-1273 vaccine, risk for stillbirth, PROVENT prophylaxis trial results, fluvoxamine recommendations, advice on molnupiravir, automated text messaging service for monitoring illness, and long COVID-19 after vaccination and infection. Hos...

TWiV reviews Michael Worobey's dissection of the early COVID-19 cases in Wuhan, and the discovery that herpesviruses assimilate cellular kinesin to produce motorized virus particles. Hosts:  Vincent Racaniello , Alan Dove , and Kathy Spindler Subscribe (free):  iTunes ,  Google Podcasts ,  RSS ,  email Become a  patron  of TWiV! Links for this episode Early COVID-19 cases in Wuhan (Science) Herpes...