What does appearance of Omicron variant mean for the double-vaccinated?

What does appearance of Omicron variant mean for the double-vaccinated?:

We find out how much protection Covid vaccines may offer amid speculation new variant could be more resistant

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The emergence of Omicron has prompted widespread speculation that it may be more resistant to Covid-19 vaccines than existing variants, including Delta. But what does that mean for the average double-vaccinated person?

All the vaccines currently available in the UK work by training the immune system against the coronavirus spike protein – the key it uses to infect cells by binding to the ACE2 receptor. Omicron possesses more than 30 mutations in this protein, including 10 in the so-called “receptor-binding domain” (RBD) – the specific part that latches on to this receptor. Delta has two RBD mutations.

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