Scientists from the University of Bologna found that the most common side effects of the COVID-19 vaccine were more common in people who had a negative attitude towards the vaccine. The research was published in the journal Psychological Science.
Vaccines against the SARS-CoV-2 coronavirus are considered the most effective way to prevent severe forms of COVID-19. Although scientific studies have provided reliable data on the safety of vaccines, many people fear possible side effects when vaccinated.
Researchers analyzed data from 315 people. Before vaccination, they asked participants about their fears and beliefs about the COVID-19 vaccine, their confidence in healthcare and scientists, and suggested tests for specific personality traits. A day later, the scientists collected data on the presence and severity of any side effects.
None of the participants reported any side effects requiring medical attention. The most commonly reported adverse events were fatigue, muscle aches, headaches, and pain at the injection site. It also occurred most often in people who had negative attitudes towards vaccination.
Overall, psychological factors accounted for 30% of the likelihood and severity of adverse events.
“The results of our study confirm and underscore the importance of creating a strong climate of trust around the COVID-19 vaccine, especially for older age groups who often exhibit negative attitudes towards the vaccine,” the scientists wrote.