21:00BBC Inside ScienceCoronavirus - new variantsBBC Radio 4 Duration: 34 minutes Thu 6th Oct 2022, 21:00 on BBC Radio 4 LWAvailable for over a yearListen nowWhat does virus evolution mean for Covid severity as we head into winter? Show more GenresFactualScience & NatureFactualScience & NatureScience & TechnologyBrandBBC Inside Science Source: BBC Online