1.
Prevalence, incidence and longevity of antibodies against SARS-CoV-2 among primary healthcare providers in Belgium : a prospective cohort study with 12 months of follow-up
2.
Prevalence of SARS-CoV-2 antibodies among Belgian nursing home residents and staff during the primary COVID-19 vaccination campaign
3.
Declining prevalence of SARS-CoV-2 antibodies among vaccinated nursing home residents and staff six months after the primary BNT162b2 vaccination campaign in Belgium : a prospectiv...