Table 2.

Laboratory-confirmed infection with SARS-CoV-2 at month 3 (M3) and seroprevalence at M0, M1 and M3 after imputation of missing data, according to professional category.

	All	Senior physicians	Medical students	Care assistants	Nurses	Others	p value*
Serology positive
At M0	5.9% [4.7; 7.5]	6.3% [5.0; 7.9]	12.9% [11.0; 15.1]	3.9% [2.9; 5.2]	7.1% [5.7; 8.9]	5.3% [4.1; 6.8]	0.06
At M1	13.0% [11.1; 15.2]	12.1% [10.3; 14.2]	21.1% [18.7; 23.8]	11.6% [9.8; 13.8]	14.9% [12.9; 17.2]	10.5% [8.8; 12.5]	0.13
At M3	13.0% [11.1; 15.2]	12.4% [10.5; 14.6]	20.4% [17.7; 23.4]	11.6% [9.7%; 13.8]	14.8% [12.8; 17.1]	10.5% [8.8; 12.5%]	0.21
Laboratory-confirmed SARS-CoV-2 infection at M3	14.6% [12.5; 16.9]	14.2% [12.2; 16.5]	23.5% [20.8; 26.4]	12.5% [10.6; 14.7]	16.6% [14.4; 18.9]	11.3% [9.5; 13.4]	0.12

Data are % (95% confidence interval). Others include (but not limited to): secretaries, nurse’s managers, social workers.

*Comparison across professional categories.