inclusion criteria: male or female ≥18 years willing and able to comply with all study requirements, including scheduled visits, intervention, and laboratory tests kidney transplant recipients who had received two doses of sinopharm vaccine after transplantation females must not be pregnant or breastfeeding at least six months should have passed from the time of transplantation between 1 to 3 months should have passed from the second dose of sinopharm vaccine

inclusion criteria: male or female ≥18 years willing and able to comply with all study requirements, including scheduled visits, intervention, and laboratory tests kidney transplant recipients who had received two doses of sinopharm vaccine after transplantation females must not be pregnant or breastfeeding at least six months should have passed from the time of transplantation between 1 to 3 months should have passed from the second dose of sinopharm vaccine