Heterologous and BNT162b2 boosters are more effective than non-mRNA homologous boosters for Omicron.
Paternina-Caicedo A., Quevedo DS., Ríos DS., Moyano D., Alvis-Guzmán N., Alviz-Zakzuk NR., Salcedo F., Ramírez-Suarez J., Smith AD., De la Hoz-Restrepo F.