Reply to letter to the editor by Lippi and Plebani: « The presence of anti-SARS-CoV-2 antibodies does not necessarily reflect efficient neutralization » (THEIJID-D-22-00085). - Gargouri S; Abid N; Karray-Hakim H; Rebai A (International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2022)