At the start of the SARS-CoV-2 pandemic, several workers had symptoms compatible with COVID-19 at a time when PCR (smear) testing was only allowed for hospitalized people. In addition, the PCR test has a fairly low sensitivity. In this context, serology can make it possible to determine whether the symptoms are indeed linked to exposure to SARS-CoV-2.~As a hospital, and in order to prepare for a possible second epidemic wave, it is also useful to know the proportion of staff members who have already been in contact with the virus for organizational purposes and symptom assessment.~.
The management of the Grand Hôpital de Charleroi hospital authorized the performance of a serology for each member of the establishment's staff in order to better characterize the proportion of its employees who have already been in contact with the SARS CoV-2 virus for organizational and evaluation purposes symptoms.