Long-Term Safety and Immunogenicity of AZD1222 (ChAdOx1 nCoV-19): 2-Year Follow-Up from a Phase 3 Study oleh Kathryn Shoemaker, Karina Soboleva, Angela Branche, Shivanjali Shankaran, Deborah A. Theodore, Muhammad Bari, Victor Ezeh, Justin Green, Elizabeth Kelly, Dongmei Lan, Urban Olsson, Senthilkumar Saminathan, Nirmal Kumar Shankar, Berta Villegas, Tonya Villafana, Ann R. Falsey, Magdalena E. Sobieszczyk