What is probability of getting infected with omicron if you have antibodies?

Even if a person has antibodies against coronavirus, he can still be infected with omicron, virologist, professor of Gamaleya Center Anatoly Altstein says.

In the presence of antibodies COVID-19 usually passes in a mild form, also the mortality rate is reduced, Izvestia reported. According to the specialist, studies from Great Britain show that the set of antibodies in over-infected and vaccinated people against coronavirus may be different.

According to Altstein there's a theory, which has not yet been confirmed, that if a person first gets the coronavirus and then gets vaccinated, their immunity becomes stronger and their antibodies more diverse.