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Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Viruses 2021 ; 13 (6): ä Nephropedia Template TP
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Kinetics of Neutralizing Antibodies of COVID-19 Patients Tested Using Clinical D614G, B 1 1 7, and B 1 351 Isolates in Microneutralization Assays #MMPMID34073577
Virtanen J; Uusitalo R; Korhonen EM; Aaltonen K; Smura T; Kuivanen S; Pakkanen SH; Mero S; Patjas A; Riekkinen M; Kantele A; Nurmi V; Hedman K; Hepojoki J; Sironen T; Huhtamo E; Vapalahti O
Viruses 2021[May]; 13 (6): ä PMID34073577show ga
Increasing evidence suggests that some newly emerged SARS-CoV-2 variants of concern (VoCs) resist neutralization by antibodies elicited by the early-pandemic wild-type virus. We applied neutralization tests to paired recoveree sera (n = 38) using clinical isolates representing the first wave (D614G), VoC1, and VoC2 lineages (B.1.1.7 and B 1.351). Neutralizing antibodies inhibited contemporary and VoC1 lineages, whereas inhibition of VoC2 was reduced 8-fold, with 50% of sera failing to show neutralization. These results provide evidence for the increased potential of VoC2 to reinfect previously SARS-CoV-infected individuals. The kinetics of NAbs in different patients showed similar decline against all variants, with generally low initial anti-B.1.351 responses becoming undetectable, but with anti-B.1.1.7 NAbs remaining detectable (>20) for months after acute infection.