Table 5.

The effect of infection history on antibody titer in 3 vaccine types.

Vaccine type	After the first dose			After second dose
	Antibody titer (BAU/ml): Median (IQR 25–75)			Antibody titer (BAU/ml): Median (IQR 25–75)
	With Inf.h	Without inf.h	P-value	With Inf.h	Without inf.h	P-value
AstraZeneca	796.8 (376.0–820.0)	152.0 (60.8–387.2)	< 0.001	419.2 (617.6–411.2)	366.4 (252.8–412.8)	< 0.001
COVIran Barekat	150.4 (51.2–323.2)	105.6 (16.0–278.4)	0.232	163.2 (64.8–381.6)	192.0 (72.0–297.6)	0.800
Sinopharm	275.2 (166.4–315.2)	57.6 (15.2–262.4)	0.003	264.0 (134.4–389.6)	176.0 (72.0–300.8)	0.159
Overall	320.0 (212.8–796.8)	105.6 (20.0–299.2)	< 0.001	384.0 (211.2–422.4)	235.2 (96.0–371.2)	0.002

Inf.h, infection history.