del Cura-Bilbao A, López-Mendoza H, Chaure-Pardos A, Vergara-Ugarriza A, Guimbao-Bescós J. Effectiveness of 3 COVID-19 Vaccines in Preventing SARS-CoV-2 Infections, January–May 2021, Aragon, Spain. Emerg Infect Dis. 2022 Mar;28(3).