Many continue to worry about experiencing side effects from vaccines—especially the COVID-19 vaccines—but new data from a comprehensive meta-analysis suggests there is little to fear.
ABC News Chief Medical Correspondent Dr. Jen Ashton explains how vaccines work.Many continue to worry about experiencing side effects from vaccines -- especially thevaccines -- but new data from a comprehensive meta-analysis suggests there is little to fear.
Researchers examined 12 vaccine safety trials, involving thousands of people, and compared rates of side effects reported between those who received a placebo shot and those who received a real shot. They found that after the first shot, two-thirds of people experienced side effects like headache and fatigue, which the researchers said were attributable to the placebo effect.
Experts say the placebo effect is a powerful example of the connection between our minds, bodies and circumstances.