Long COVID is associated with lower percentages of mature, cytotoxic NK cell phenotypes.

Tsao T, Buck AM, Grimbert L, LaFranchi BH, Altamirano Poblano B, Fehrman EA, Dalhuisen T, Hsue PY, Kelly JD, Martin JN, Deeks SG, Hunt PW, Peluso MJ, Aguilar OA, Henrich TJ