Both mRNA vaccines so far have produced T-cell responses with Pfizer/BioNTech producing more CD8 than Moderna. Both had detectable levels of responses, though.

Both mRNA vaccines so far have produced T-cell responses with Pfizer/BioNTech producing more CD8 than Moderna. Both had detectable levels of responses, though. As is typical in clinical development, we need to wait for the phase 3 data before making a decision.