The extent to which Omicron's rapid spread leaves the world better off in its fight against COVID depends on a few big questions, including how long infection-induced immunity actually lasts.
The extent to which Omicron's rapid spread leaves the world better off in its fight against COVID depends on a few big questions, including how long infection-induced immunity actually lasts.Vaccinations and infections at high enough levels can form an immunity wall against the future spread of the virus.
But for that to happen, Omicron infections would have to translate into significant additional protection against future infection — which isn't a given.There are outstanding questions as to whether the immune protection generated by Omicron infections is substantial or long-lasting. That means that for someone who hasn't been vaccinated or previously infected, "an Omicron infection isn't going to give them much protection against a future variant that isn't Omicron-like," Moore said. "It's not nothing, but it would be comparatively weak.”been vaccinated or infected with another variant — which is a very sizable population at this point — an Omicron infection could end up working as an effective booster.
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