This Week in Virology

From DukeNUS Medical School, Vincent speaks with Ashley, Sheemei, Eng Eong and Dahai about their careers and their research on flaviviruses and sensing of viral RNA. Host: Vincent Racaniello Guests: Sheemei Lok, Dahai Luo, Eng Eong Ooi, and Ashley St. John Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Links for this episode Dengue virus and endothelial permeability (J Clin Invest) Dengue virus morphological switch (PLoS Path) Symptomatic yellow fever vaccine infections (Nat Med) RNA recognition by RIG-I and MDA5 (Nucl Acids Res) Timestamps by Jolene. Thanks! Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv

Daniel Griffin provides a clinical update on COVID-19, then we review SARS-CoV-2 infections in non-humans, vesicular stomatitis in Kansas horses, and answer listener questions. Hosts: Vincent Racaniello, Dickson Despommier, Alan Dove, Kathy Spindler and Brianne Barker Guests: Daniel Griffin and Chuck Knirsch Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Links for this episode Dexamethasone for COVID-19 (medRxiv) Proning trial for COVID-19 (Lancet) Tocilizumab for COVID-19 cytokine storm (Chest) Global causes of death Vesicular stomatitis in horses (ProMedMail) Daily tests needed (Atlantic) SARS-CoV-2 infection risks Letters read on TWiV 632 Timestamps by Jolene. Thanks! Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv

Vincent, Rich, and Brianne discuss a study estimating the fraction of symptoms and severe disease after SARS- CoV-2 infection, cellular immune responses without seroconversion during interfamilial infections, and answer listener email. Hosts: Vincent Racaniello, Rich Condit, and Brianne Barker Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Links for this episode Probability of symptoms and severe COVID-19 (aRxiv) Cellular immune response without seroconversion (medRxiv) Image credit Letters read on TWiV 631 Timestamps by Jolene. Thanks! Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv

From the Environmental Health Institute in Singapore, Vincent speaks with Director Lee Ching Ng about their work to control viral infectious diseases, including the controlled release of mosquitoes containing Wolbachia endosymbionts to inhibit viral transmission. Host: Vincent Racaniello Guest: Lee Ching Ng Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV!

Daniel Griffin provides a clinical update on COVID-19, including analysis of the dexamethasone trial, and then we discuss two Ebolavirus outbreaks in DRC, clinical and virological aspects of asymptomatic SARS-CoV-2 infections, age-dependent effects on transmission, and answer listener email. Hosts: Vincent Racaniello, Dickson Despommier, and Alan Dove Guests: Daniel Griffin and Chuck Knirsch Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Links for this episode Dexamethasone reduces COVID-19 deaths (U Oxford) Assessment of asymptomatic COVID-19 (Nature Med) Age-dependent effects on SARS-CoV-2 transmission (Nature Med) Image credit Letters read on TWiV 629 Timestamps by Jolene. Thanks! Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv

Vincent and Rich discuss the SARS-CoV-2 D614G amino acid change in the spike glyprotein, duration of infectious virus shedding from patients, virus transmission among hamsters infected in the laboratory, and tackle listener email. Hosts: Vincent Racaniello and Rich Condit Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Links for this episode Austin TX key indicators for staging D614 amino acid change (Scripps) Virus shedding in hospitalized patients (medRxiv) Hamster SARS-CoV-2 model (Nature) COVID-19 host genetic initiative Image credit Letters read on TWiV 628 Timestamps by Jolene. Thanks! Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv

Vincent visits the National Centre for Infectious Diseases and speaks with Executive Director Leo Yee-Sin and Consultant Nancy Tee about the main hub for both clinical treatment of infectious diseases and outbreak management in Singapore. Host: Vincent Racaniello Guests: Leo Yee-Sin and Nancy Tee Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Links for this episode National Centre for Infectious Diseases National Public Health Laboratory Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv

Daniel Griffin provides a clinical update on COVID-19, then Ralph Baric joins TWiV to discuss SARS-CoV-2 transmission, vaccines, diagnostic tests, and a new animal model from his laboratory that does not use transgenic mice. Hosts: Vincent Racaniello, Dickson Despommier, Alan Dove, Rich Condit, and Brianne Barker Guests: Daniel Griffin, Chuck Knirsch, and Ralph Baric Subscribe (free): iTunes, Google Podcasts, RSS, email Links for this episode Mouse-adapted SARS-CoV-2 model (bioRxiv) SARS-CoV-2 mRNA vaccine (bioRxiv) ASM resources for #shutdownstem President Obama on sustaining momentum for change (Facebook) America After the Civil War (PBS) Image credit Letters read on TWiV 626 Timestamps by Jolene. Thanks! Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv

Vincent and Rich visit Fred Murphy to hear about his wide-ranging career in virology, spanning many institutions, involving dangerous viruses like rabies virus, Ebolavirus (he took that famous iconic image), Marburg virus, Lassa virus, coronaviruses, and later writing a history of the field. Hosts: Vincent Racaniello and Rich Condit Guest: Frederick A. Murphy Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Link for this episode (UTMB) Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv

Daniel Griffin provides a clinical update on COVID-19, then Sabra Klein joins us to discuss the effect of sex, gender, and age on viral infectious disease, including COVID-19. Hosts: Vincent Racaniello,Dickson Despommier, Alan Dove, Rich Condit, Kathy Spindler and Brianne Barker Guests: Daniel Griffin, Chuck Knirsch, and Sabra Klein Click arrow to play Download TWiV 624 (91 MB .mp3, 152 min) Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Links for this episode SeXX matters in infectious disease pathogenesis (PLoS Path) Sex and gender impact immune responses to vaccines (Physiol) Testosterone and disease severity in mice (Cell Immunol) Age-associated effects on impact of sex steroids on vaccine responses (NPJ Vaccines) Evolution of greater humoral immunity in females (Curr Opin Physiol) Impact of sex and gender on COVID-19 (Biol Sex Diff) COVID-19 trials should include sex as variable (J Clin Inves) Global Health 50/50 Image credit Timestamps by Jolene. Thanks! Intro music is by Ronald Jenkees Send your virology questions and comments to twiv@microbe.tv