A brand new examine has discovered that one in 5 people taking Nirmatrelvir-ritonavir remedy, generally generally known as Paxlovid, to deal with extreme signs of COVID-19, skilled a constructive take a look at outcome and shedding of dwell and doubtlessly contagious virus following an preliminary restoration and detrimental take a look at — a phenomenon generally known as virologic rebound. Against this, folks not taking Paxlovid solely skilled rebound about 2 p.c of the time.