STUDY: "A fourth vaccine dose was associated with a decreased risk of being diagnosed with post #COVID19 condition, with a vaccine effectiveness of 31%." www.thelancet.com/journals/ecl...
thelancet.com
Booster dose of COVID-19 vaccine and its effectiveness against post COVID-19 condition in individuals with pre-existing immunity: a sequential propensity score-matched cohort study
Receiving a fourth dose of COVID-19 vaccine was associated with a lower risk of being
diagnosed with post COVID-19 condition compared with three doses, although the absolute
risk reduction was small. ...