Nels joins TWiV to discuss hypotheses for the origins of Omicron, including that it came from mice or arose during chronic infection of an immunocompromised patient. Hosts: Vincent Racaniello, Rich Condit, Kathy Spindler, and Brianne Barker Guest: Nels Elde Click arrow to playDownload TWiV 861 (69 MB .mp3, 114 min)Subscribe (free): Apple Podcasts, Google ...

by Gertrud U. Rey Memories are formed through the recurrent activities of extensive networks of neural circuits, which consist of neuronal cells that transmit signals to each other at sites called synapses. Synaptic strength can change in intensity over time, a phenomenon known as “synaptic plasticity,” which may involve changes ...

TWiV reviews a seminal paper showing that chemically modified bases in RNAs suppress recognition by Toll-like receptors, a finding that that was essential for the development of COVID-19 mRNA vaccines. Hosts: Vincent Racaniello, Dickson Despommier, Rich Condit, and Kathy Spindler Click arrow to playDownload TWiV 860 (76 MB .mp3, 126 min)Subscribe (free): Apple ...

In COVID-19 clinical update #99, Daniel Griffin discusses Omicron disease severity, neurologic manifestations in children, testing outcomes during multiple infections, boosters improve VE and VD, booster efficacy for ED and UC encounters, vaccines induce cross-protective T cell memory, and indications for monoclonal antibody therapy. Click arrow to playDownload TWiV 859 (58 ...

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 ...