Nocebo responses explain up to 76% of COVID vaccine side effects Ars TechnicaMost side effects noted in COVID vaccine trials may be due to 'nocebo effect' CIDRAPNew study shows more than half of vaccine-induced side effects are all in your head WISHTV.comStudy: 'Nocebo effect' may be behind most mild COVID vaccine reactions Spectrum News NY1Two-thirds of COVID jab reactions caused by placebo effect- study The Jerusalem Post