2024年5月老年人血清中针对新冠病毒KP.3.1.1和XEC的中和抗体水平较低。
Low Levels of Neutralizing Antibodies Against SARS-CoV-2 KP.3.1.1 and XEC in Serum From Seniors in May 2024.
作者信息
Fossum Even, Vikse Elisabeth Lea, Robertson Anna Hayman, Wolf Asia-Sophia, Rohringer Andreas, Trogstad Lill, Mjaaland Siri, Hungnes Olav, Bragstad Karoline
机构信息
Department of Virology, Division of Infection Control, Norwegian Institute of Public Health, Oslo, Norway.
Department of Method Development and Analytics, Division of Infection Control, Norwegian Institute of Public Health, Oslo, Norway.
出版信息
Influenza Other Respir Viruses. 2025 May;19(5):e70102. doi: 10.1111/irv.70102.
New immune evasive variants of SARS-CoV-2 may increase infections and hospitalizations in risk groups, such as the elderly. In this study, we evaluated neutralizing antibodies against KP.3.1.1 and XEC, virus variants that were either widely distributed or on the rise globally in the fall of 2024, in sera from a cohort of seniors aged 68-82 years collected in April/May 2024. Neutralizing responses were low against both KP.3.1.1 and XEC, also in XBB.1.5 boosted individuals and people with recent break-through infections, supporting the recommendation of an updated COVID-19 vaccine booster in this age group.
新型严重急性呼吸综合征冠状病毒2（SARS-CoV-2）免疫逃逸变体可能会增加老年等风险人群的感染率和住院率。在本研究中，我们评估了2024年4月/5月收集的68 - 82岁老年人群队列血清中针对KP.3.1.1和XEC的中和抗体，这两种病毒变体在2024年秋季全球范围内广泛传播或呈上升趋势。在XBB.1.5加强免疫的个体和近期有突破性感染的人群中，针对KP.3.1.1和XEC的中和反应均较低，这支持了在该年龄组中更新新冠病毒疫苗加强针的建议。
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