The problem is stated in the following starting questions:
What conditions and factors are associated with infection and non-infection by SARS-CoV-2 among health professionals working in the three hospitals on the islands of Santiago and São Vicente? Which are they (gender, age group, profession, type of contact, etc.)? Where do the infected HCW typically work (sector)? When and how did the infection occur? What is the prevalence of SARS-CoV-2 antibody in professionals with confirmed SARS-CoV-2 infection and in HCW that thought they were not infected by SARS-CoV-2? How long do anti-SARS-CoV-2 antibodies last? What is the impact of infection on unplanned absenteeism? Which symptoms and complaints (if any) persists after SARS-CoV-2 infection?