Journal of Translational Medicine
Some T cell responses were weaker in older COVID-19 survivors
An observational study of COVID-19 survivors aged 18–59 and 60 or older found weaker responses after inactivated vaccines and subsequent Omicron infection in older…An observational study of COVID-19 survivors aged 18–59 and 60 or older found weaker responses after inactivated vaccines and subsequent Omicron infection in older adults.
Cohort studyImmune response
Who was studiedPreviously infected younger and older adults, against younger COVID-19 survivors
What changedAntiviral helper T cell responses to non-spike proteins were weaker in older than younger survivors after vaccination and Omicron infection
The catchImmune-cell measurements are not a direct measure of protection against severe illness