Beth Israel Deaconess Medical Center, Boston, MA, USA.
Los Alamos National Laboratories, Santa Fe, NM, USA.
Vaccine. 2023 Nov 13;41(47):6904-6909. doi: 10.1016/j.vaccine.2023.10.051. Epub 2023 Oct 21.
The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) variant BA.2.86 has over 30 mutations in spike compared with BA.2 and XBB.1.5, which raised the possibility that BA.2.86 might evade neutralizing antibodies (NAbs) induced by vaccination or infection. In this study, we show that NAb titers are substantially lower to BA.2.86 compared with BA.2 but are similar or slightly higher than to other current circulating variants, including XBB.1.5, EG.5.1, and FL.1.5.1. Moreover, NAb titers against all these variants were higher in vaccinated individuals with a history of XBB.1.5 infection compared with vaccinated individuals with no history of XBB.1.5 infection, suggesting the potential utility of the monovalent XBB.1.5 mRNA boosters.
严重急性呼吸综合征冠状病毒 2 (SARS-CoV-2) 的变异株 BA.2.86 与 BA.2 和 XBB.1.5 相比,在刺突蛋白上有超过 30 个突变,这增加了 BA.2.86 可能逃避疫苗接种或感染诱导的中和抗体 (NAb) 的可能性。在这项研究中,我们表明,与 BA.2 相比,针对 BA.2.86 的 NAb 滴度显著降低,但与其他当前流行的变异株(包括 XBB.1.5、EG.5.1 和 FL.1.5.1)相似或略高。此外,与没有 XBB.1.5 感染史的接种者相比,有 XBB.1.5 感染史的接种者对所有这些变异株的 NAb 滴度更高,这表明单价 XBB.1.5 mRNA 加强针的潜在效用。