All 70 individuals were contacted and invited for testing for SARS-CoV-2 anti-S titres in serum soon after the 4th vaccine dose, and the ones individuals with inadequate antibody titres had been planned to get an infusion with cilgavimab … Continue reading All 70 individuals were contacted and invited for testing for SARS-CoV-2 anti-S titres in serum soon after the 4th vaccine dose, and the ones individuals with inadequate antibody titres had been planned to get an infusion with cilgavimab and tixagevimab