Table 1.

. Population characteristics.

Demography
Males (N = 414)
Age min Age max Age (median ; 95% CI)	21.9 71.9 47.45 ; 46.00–48.84
Females (N = 1085)
Age min Age max Age (median ; 95% CI)	21.6 72.7 43.90 ; 42.80–45.10

Type of occupation	N		% positive serology
Nurse, Caregiver, Dietitian, Midwife, Occupational therapist, Psychologist, Social worker	588		19.2%
Medical doctor, Dentist, Physiotherapist, Logopedist	323		11.8%
Pharmacist, Administrative staff, IT	320		9.1%
Maintenance staff, Technical services	134		16.4%
Imaging technologist, Laboratory technologist	61		6.6%
Other	17		11.0%
Not specified	56		19.6%

COVID-19 exposure (patient exposed personnel only)	N		% positive serology
Workers at least once exposed to COVID-19 patients	550		13.5%
Workers never exposed to COVID-19 patients	588		12.6%

Status of the workers	N
Employee	1178
Self-employed	297
Not specified	24

Fields of occupation	regular	intermittent	% positive serology
COVID inpatient unit	219	180	24.3%
Intensive care unit	111	123	13.2%
COVID emergencies	112	93	14.6%
Non-COVID emergencies	98	86	18.5%
Non-COVID inpatient unit/Other services with patient contact	800	306	14.4%
Other services without patient contact	250	67	10.5%
Not specified	146		11.0%

Procedures at risk	regular	intermittent	% positive serology
Bronchoscopies	28	33	4.9%
Intubations	73	46	9.2%
Other*	174	39	17.4%

Legend: "Regular" means being assigned to a care unit or to perform a technical act and "intermittent" means providing voluntary or on-demand assistance to work in a care unit or to perform a technical act.

^⁎Medical procedures potentially at risk of SARS-CoV-2 transmission: dental or stomatology care (N = 19); upper respiratory and digestive tract endoscopies (ENT fibroscopy, trans-esophageal ultrasound, gastroscopy) (N = 40); aerosol procedures (respiratory physiotherapy, aspirations, etc.) (N = 89); other procedures at risk (COVID smear, etc.) (N = 52).