CD4+ T cell activation

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.