中和抗体
病毒学
2019年冠状病毒病(COVID-19)
医学
抗体
严重急性呼吸综合征冠状病毒2型(SARS-CoV-2)
大流行
中和
效力
病毒
免疫学
冠状病毒
免疫系统
生物
疾病
内科学
传染病(医学专业)
体外
遗传学
作者
Koichi Furukawa,Lidya Handayani Tjan,Silvia Sutandhio,Yukiya Kurahashi,Sachiyo Iwata,Yoshiki Tohma,Shigeru Sano,Sachiko Nakamura,Mitsuhiro Nishimura,Jun Arii,Tatsunori Kiriu,Masatsugu Yamamoto,Tatsuya Nagano,Yoshihiro Nishimura,Yasuko Mori
摘要
As of March 2021, Japan is facing a fourth wave of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. To prevent further spread of infection, sera cross-neutralizing activity of patients previously infected with conventional SARS-CoV-2 against novel variants is important but has not been firmly established.We investigated the neutralizing potency of 81 coronavirus disease 2019 (COVID-19) patients' sera from the first to fourth waves of the pandemic against SARS-CoV-2 D614G, B.1.1.7, P.1, and B.1.351 variants using their authentic viruses.Most sera had neutralizing activity against all variants, showing similar activity against B.1.1.7 and D614G, but lower activity especially against B.1.351. In the fourth wave, sera-neutralizing activity against B.1.1.7 was significantly higher than that against any other variants, including D614G. The sera-neutralizing activity in less severe patients was lower than that of more severe patients for all variants.The cross-neutralizing activity of convalescent sera was effective against all variants but was potentially weaker for B.1.351. The high neutralizing activity specific to B.1.1.7 in the fourth wave suggests that mutations in the virus might cause conformational change of its spike protein, which affects immune recognition of D614G. Our results indicate that individuals who recover from COVID-19 could be protected from the severity caused by infection with newly emerging variants.
科研通智能强力驱动
Strongly Powered by AbleSci AI