Centre for Infectious Disease Control, National Institute for Public Health and Environment (RIVM), Bilthoven, the Netherlands.
Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht (UMCU), Utrecht, the Netherlands.
Euro Surveill. 2024 Mar;29(10). doi: 10.2807/1560-7917.ES.2024.29.10.2400109.
We estimated vaccine effectiveness (VE) of SARS-CoV-2 Omicron XBB.1.5 vaccination against self-reported infection between 9 October 2023 and 9 January 2024 in 23,895 XBB.1.5 vaccine-eligible adults who had previously received at least one booster. VE was 41% (95% CI: 23-55) in 18-59-year-olds and 50% (95% CI: 44-56) in 60-85-year-olds. Sequencing data suggest lower protection against the BA.2.86 (including JN.1) variant from recent prior infection (OR = 2.8; 95% CI:1.2-6.5) and, not statistically significant, from XBB.1.5 vaccination (OR = 1.5; 95% CI:0.8-2.6).
我们估计,在 2023 年 10 月 9 日至 2024 年 1 月 9 日期间,23895 名符合 XBB.1.5 疫苗接种条件的成年人中,此前至少接种过一次加强针的成年人中,针对自我报告的感染,SARS-CoV-2 奥密克戎 XBB.1.5 疫苗的有效性(VE)为 41%(95%CI:23-55),在 18-59 岁的人群中为 50%(95%CI:44-56)。测序数据表明,近期既往感染(OR=2.8;95%CI:1.2-6.5)和 XBB.1.5 疫苗接种(OR=1.5;95%CI:0.8-2.6)对 BA.2.86(包括 JN.1)变体的保护作用较低,但无统计学意义。
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