Impaired antibody responses were observed in patients with type 2 diabetes mellitus after receiving the inactivated COVID-19 vaccines

Table 2 Adverse events of COVID-19 inactivated vaccines in all participants

Variables	T2DM (n = 89)	HCs (n = 100)	P value
Overall adverse events within 7 days	6 (6.7%)	6 (6%)	0.835
Overall adverse events within 30 days	5 (5.6%)	8 (8%)	0.518
Local adverse events
Swelling	2 (2.2%)	2 (2%)	1.000
Pain	2 (2.2%)	6 (6%)	0.285
Itch	1 (1.1%)	–	0.471
Systemic adverse events			1.000
Lethargy	1 (1.1%)	1 (1%)	1.000
Cough	1 (1.1%)	–	0.471
Fatigue	2 (2.2%)	–	0.220
Pruritus	1 (1.1%)	–	0.471
Grade 3 and 4 adverse events	–	–	1.000

Data were presented as number (%). The types of unrecorded adverse events were not listed here

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