The TWiV team reveals a variant SARS-CoV-2 that emerged in deer with deer-to-human transmission, and hybrid virus particles produced by co-infection with influenza virus and respiratory syncytial virus particles.

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.

TWiVsters review off-season epidemics of respiratory syncytial virus in Australia after easing of COVID-19 restrictions, and impaired innate immune responses in upper respiratory tract cells from patients with severe COVID-19.

The Guardians of the TWiV-o-verse discuss the process of codon deoptimization for the production of experimental infectious attenuated viral vaccines, and how a respiratory syncytial virus with 619 base changes was rescued by genomes with very large internal deletions.

Kizzmekia Corbett joins TWiV to review her career and her work on respiratory syncytial virus, influenza virus, and coronaviruses and coronavirus vaccines, including her role in development and testing of a spike-encoding mRNA vaccine, and then we review the Nobel Prize for discovery of hepatitis C virus.

Erin joins the TWiVirions to discuss a computer exploit encoded in DNA, creation of pigs free of endogenous retroviruses, and mutations in the gene encoding an innate sensor of RNA in children with severe viral respiratory disease.