Omicron BA.4/BA.5 escape neutralizing immunity elicited by BA.1 infection – Nature Communications

Emerging SARS-CoV-2 Omicron sub-lineages BA.4 and BA.5 raise concerns about potential immune evasion. Here, Khan et al. show that both BA.4 and BA.5 are able to escape immune response induced by prior BA.1 infection, but that this effect is less pronounced in vaccinated individuals.

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