clinical research/practice(133) Infectious disease(130) COVID-19(98) infection and infectious agents - viral(92) recipient(85) Patient(83) Infection(80) SARS-CoV-2(76) kidney(66) vaccine.(65) Vaccine(64) antibody(49) kidney transplantation/nephrology(47) kidney transplant recipient(45) infectious agent(44) solid organ transplant(44) Immunosuppression(43) infectious agents(42) recipients(41) dose(39) patients(34) immunosuppression/immune modulation(34) SARS-CoV-2 vaccine(33) vaccination(32) complication: infectious(29) humoral(29) positive(29) mRNA(29) Immunosuppressant(28) therapy(27)