Placebo effect accounts for more than two-thirds of COVID-19 vaccine adverse events, researchers find.

News Release: Placebo effect accounts for more than two-thirds of COVID-19 vaccine adverse events, researchers find – Beth Israel Deaconess Medical Center

Original Study: Frequency of Adverse Events in the Placebo Arms of COVID-19 Vaccine Trials: A Systematic Review and Meta-analysis – JAMA Network Open

Commentary: ‘Nocebo effect’: two-thirds of Covid jab reactions not caused by vaccine, study suggests – The Guardian