The average antibody concentration generated after injection by each vaccine is 1199.3 ± 2209.92 respectively (AZD1222); 2461.73 ± 3283.13 (BNT162b2); 3793.67 ± 2685.12 (MRNA-1273); 153.36 ± 511.82 (BBIBP-CorV) (p < 0, 001).