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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Nat+Immunol 2021 ; 22 (5): 620-626 Nephropedia Template TP
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Robust SARS-CoV-2-specific T cell immunity is maintained at 6 months following primary infection #MMPMID33674800
Zuo J; Dowell AC; Pearce H; Verma K; Long HM; Begum J; Aiano F; Amin-Chowdhury Z; Hoschler K; Brooks T; Taylor S; Hewson J; Hallis B; Stapley L; Borrow R; Linley E; Ahmad S; Parker B; Horsley A; Amirthalingam G; Brown K; Ramsay ME; Ladhani S; Moss P
Nat Immunol 2021[May]; 22 (5): 620-626 PMID33674800show ga
The immune response to SARS-CoV-2 is critical in controlling disease, but there is concern that waning immunity may predispose to reinfection. We analyzed the magnitude and phenotype of the SARS-CoV-2-specific T cell response in 100 donors at 6 months following infection. T cell responses were present by ELISPOT and/or intracellular cytokine staining analysis in all donors and characterized by predominant CD4(+) T cell responses with strong interleukin (IL)-2 cytokine expression. Median T cell responses were 50% higher in donors who had experienced a symptomatic infection, indicating that the severity of primary infection establishes a 'set point' for cellular immunity. T cell responses to spike and nucleoprotein/membrane proteins were correlated with peak antibody levels. Furthermore, higher levels of nucleoprotein-specific T cells were associated with preservation of nucleoprotein-specific antibody level although no such correlation was observed in relation to spike-specific responses. In conclusion, our data are reassuring that functional SARS-CoV-2-specific T cell responses are retained at 6 months following infection.