According to top US infectious disease expert Anthony Fauci, it is too early to predict whether Omicron will put a stop to the Covid-19 epidemic, and that another version with comparable vaccine escape potential may exist.

Fauci remarked at the Davos Agenda virtual event on Monday that "natural vaccination," or protection from a past infection, may not be as successful as some believe. There's a possibility that, like Omicron, a new variety will evolve in the future that will be able to avoid the natural immunity produced by infection with the new strain.

Despite the fact that Omicron appears to produce less severe illness than other variations, Fauci believes the sheer number of cases might have a significant impact on collective immunity.

is an open question as to whether or not Omicron is going to be the live virus vaccination that everyone is hoping for, because you have such a great deal of variability with new variants emerging,” Fauci was quoted as saying by the New York Times.

“I would hope that that’s the case,” he said, “but that would only be the case if we don’t get another variant that eludes the immune response”.

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