Table 2.

Side effects reported after the first- and second-dose vaccinations.

Population Characteristics	First Dose (n = 460)	Second Dose (n = 365)	p-value
Fever, n (%)	44 (9.6)	17 (4.6)	.007
Myalgia, n (%)	3 (0.65)	26 (7.1)	≤.001
Arm pain at the injection site, n (%)	374 (81.3)	91 (24.9)	≤.001
Headache, n (%)	12 (2.61)	7 (1.92)	.642
Fatigue, n (%)	22 (4.8)	23 (6.3)	.759
Other symptoms, n (%)	7 (1.52)	4 (1.1)	.789
Symptoms duration days, mean, SD (minimum-maximum)	0.98 ± 0.61 (0–7)	0.41 ± 0.73 (0–5)	≤.001

SD: Standard Deviation.