Table 1.

Correlation of SARS-CoV-2 infection with vaccination, gender, job and history of the infection among HCWs

COVID-19 symptoms	Pre-vaccination IgG-positive	Pre-vaccination IgG-negative	P value
Fever	110/334, 32.9%	62/333, 18.6%	0.0001
Cough	85/334, 25.4%	50/333, 15%	0.001
Sore throat	58/334, 17.3%	44/333, 13.2%	0.16
Myalgia	109/334, 32.6%	58/333, 17.4%	0.0001
Shortness of breath	51/334, 15.2%	26/333, 7.8%	0.0034
Chills	57/334, 17%	35/333, 10.5%	0.018
Anosmia	57/334, 17%	34/333, 10.2%	0.012
Stomach ache	21/334, 6.3%	16/333, 4.8%	0.5
Diarrhoea	33/334, 9.8%	20/333, 6%	0.08
Vomiting	16/334, 4.8%	15/333, 4.5%	1
Headache	87/334, 26%	58/333, 17.4%	0.008
Underlying diseases
Cardiovascular	8/15, 53.3%	7/15, 46.6%	1
Pregnancy	2/7, 28.5%	5/7, 71.4%	0.28
Diabetes	10/15, 66.6%	5/15, 33.3%	0.14
Hypertension	10/18, 55.5%	8/18, 44.4%	0.74

Significant p values are shown in bold.