Open access
Aug 2026
Healthy vaccinee effect in the evaluation of updated COVID-19 vaccines in elderly populations
This Swedish population study reveals that healthy vaccinee bias inflates estimates of the effectiveness of updated COVID-19 vaccines in adults aged 65 years or older, highlighting the need to account for frailty and overall health status.
Johan Lyth, A. Spreco, J. Hinkula et al.
· Nature Communications · 0 citations