The risk is still small though, there’s very limited evidence yet that immunity is waning in the UK. According to BBC news this morning, of the 4,374 people who have been hospitalised aged 50 and over with the Delta variant, 30% were unvaccinated, 9% had received one dose and 61% had received two doses. So, 2668 fully vaccinated people over 50 have been admitted to hospital out of about 18m in the category - and we know that many of those are immune- compromised so will be in the 1% who are definitely getting a booster vaccine. There’s a much greater chance of contracting the Delta variant now the numbers are rising, but not yet that you will be seriously ill.