Omicron BA.4/BA.5 escape neutralizing immunity elicited by BA.1 infection - Nature.com

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…

We isolated live BA.4 and BA.5 viruses from infections in South Africa to test against pre-existing immunity. This consisted of sera from unvaccinated (n=24) and vaccinated (n=15) people infected in … [+12657 chars]

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