Evidence of SARS-CoV-2 symptomatic reinfection in four healthcare professionals from the same hospital despite the presence of antibodies oleh Saba Gargouri, Amal Souissi, Nabil Abid, Amel Chtourou, Lamia Feki-Berrajah, Rim Karray, Hana Kossentini, Ikhlass Ben Ayed, Fatma Abdelmoula, Olfa Chakroun, Abdennour Nasri, Adnène Hammami, Noureddine Rekik, Saber Masmoudi, Hela Karray-Hakim, Ahmed Rebai