Motivation and Hesitancies in Obtaining the COVID-19 Vaccine-A Cross-Sectional Study in Norway, USA, UK, and Australia.

People who endorsed the vaccine believed that the vaccine reduces the risk of illness, protects the health of others, and had trust in scientific vaccination research. Conversely, the most frequent reason for vaccine hesitancy was concerns about side effects, followed by distrust in healthcare and science. These findings could inform public health strategies that aim to increase vaccination rates.