The comparative effectiveness of the different COVID vaccines: where do we stand?

La eficacia comparada de las vacunas COVID: ¿dónde estamos?

Daniel Prieto-Alhambra^1,2

¹Centre for Statistics in Medicine, NDORMS, University of Oxford, Oxford, UK.
²Health Data Sciences, Erasmus University Medical Center, Rotterdam. Netherlands.

Correspondencia: Daniel Prieto Alhambra
E-mail: jose.daniel.prietoalhambra@ndorms.ox.ac.uk