Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) is a serious hazard Freezer Door Handle Base for hemodialysis (HD) patients and kidney transplant (KTX) recipients as they suffer from an impaired immune response to SARS-CoV-2 vaccination.In addition, a definition of SARS-CoV-2 IgG titer that indicates a sufficient immune response, especially against new omicron variants, is urgently needed.In the present study, the immune response to either a third or a fourth dose of a mRNA vaccine was investigated in 309 dialysis and 36 KTX patients.
SARS-CoV-2 IgG titer thresholds indicating neutralizing activity against wild type (WT) and the omicron variant BA.1 were quantified.After four vaccine doses, a high-neutralizing activity against WT was evidenced in HD patients, whereas the neutralizing rate against BA.
1 was significant lower.Concerning KTX recipients, humoral and cellular immune responses after a third vaccination were computer spinner still highly impaired.This calls for modified omicron-targeting vaccines.