New variant of the Covid BA.4.6: this is what we know about the new omicron sublineage

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Although it seems that the

pandemic is coming to an end, new variants and sub-variants of Covid continue to be generated due to mutations.

On September 1, the British government identified a new variant of omicron:

, which was growing in

and represented almost 4% of cases in August.

Little is known about the origin of this

, a recombinant-type

that occurs when two variants that infect the same person form a new genetic mutation that is associated with immune evasion, making it more transmissible but not more serious.

In particular

, the

has a mutation at an antigenically significant site and an

compared to BA.5.

This could make it more resistant to the full course of the vaccine.

have not yet been defined

, BA.4.6 is a subvariant of

, so it seems predictable that its contagion will trigger similar effects: fatigue, cough, fever or headache, but also diarrhea, sore throat and a period of shorter virus incubation.

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• Omicron variant