Table 1.
Characteristics of the cohorts of HCW included in the analysis
| Bologna | Brescia | Verona | |
|---|---|---|---|
| Institutions | Public hospitals and public health authority of Bologna | Public hospitals and public health authority of Brescia | University Hospital of Verona |
| Source of data | Occupational health surveillance records | Occupational health surveillance records | Occupational health surveillance records |
| Type of vaccine (%)* | 94.78% P 5.08% M 0.09% A 0.05% J |
99.15 % P 0.22% M 0.63% A |
100% P |
| Time between vaccination and antibody test (days; mean, SD) | 59.7 (16.0) | 61.8 (3.0) | 21.0 (0) |
* P, Pfizer-BioNTech; M, Moderna, A, Astra-Zeneca; J, Johnson&Johnson