If you are interested in excellent thought and coverage of the pandemic, follow Zeynep Tufecki at the NYTimes. Her recent piece (below) points out that a major predictor of being vaccinated is having health insurance. Huge groups don't have health coverage nor do they have a primary care physician, so they don't have the 'trusted physician" that much of the messaging urges people to see. Instead they get mixed messages from the environment and end up being hesitant more than ideologically opposed..
Opinion | The Unvaccinated May Not Be Who You Think (Published 2021)
Science can find a cure for our diseases but not for our societal ills.
www.nytimes.com