Differential Anti-S Antibody Titers in Vaccinated Residents During an Outbreak of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Variant B.1.351 (β) in an Elderly Nursing Home. (3rd August 2021) - Fourati, Slim; Bailly, Benoit; Le Bouter, Anne; Guilpain, Luc; Rodriguez, Christophe; Pawlotsky, Jean-Michel