Alicia del Cura-Bilbao
, Héctor López-Mendoza, Armando Chaure-Pardos, Alberto Vergara-Ugarriza, and Joaquín Guimbao-Bescós
Figure 1. Flowchart of cohort evolution for study of coronavirus disease vaccines in preventing confirmed severe acute respiratory syndrome coronavirus 2 infection, Aragon, Spain, January–May 2021. *Participants vaccinated with the AZ vaccine had all received only 1 dose as of May 31, 2021.