Case-control and genomic epidemiology characterization of SARS-CoV-2 breakthrough infections during the Delta-to-Omicron transition. - Yuan E; Hansen CL; Tamim S; Kanwar S; Spiro DJ; Gonzalez-Losa R; Conde-Ferraez L; Granja-Pérez P; Villanueva-Jorge S; López-Martínez I; Barrea-Badillo G; Corvelo A; et al. (MBio, 2026)