The study found that overall vaccine hesitancy among all respondents decreased from 27.5% in January to 22.1% in March, indicating the progression of vaccine rollout is leading to increased acceptance, the researchers said. The resistance still concerns medical experts, and the need for more willing vaccine participants is paramount to reaching normalcy, Wendy C. King, associate professor of epidemiology for Pitt’s Graduate School of Public Health, said in a release.