Omicron, being the latest, and currently the dominant, variant, clearly has greater immune escape properties for people who have had natural infections and for people who have been immunised against COVID-19. It is also far less virulent and milder. In the UK, its infection fatality rate is now comparable to the flu. There was a time when people who made that comparison with earlier variants of COVID—they didn't know what they were talking about and you couldn't be taken seriously. But that infection fatality rate is now comparable to the flu, at least in studies of the UK population. 