Placebo Recipients in COVID-19 Vaccine Trials Often Report Adverse Events MD Magazine‘Nocebo effect’: two-thirds of Covid jab reactions not caused by vaccine, study suggests The GuardianTwo-Thirds Of COVID-19 Vaccine Side Effects Caused By “Nocebo” Effect, Not Jab IFLScienceMore Than Two-Thirds of Adverse COVID-19 Vaccine Events Are Due to Placebo Effect SciTechDailymRNA vaccines offer lasting protection against severe COVID-19 Medical News TodayView Full Coverage on Google News