Effectiveness of the Pfizer-BioNTech (BNT162b2) vaccine against the omicron variant of SARS-CoV-2 among adults aged 50 and above: A case-control study in Lebanon, June 2022 - Maryo Baakliny; Nada Ghosn; Nadine Saleh; Patrick Maison (PLoS ONE, 2025)