An interesting article from NBC news. https://www.nbcnews.com/health/health-news/updated-covid-booster-shots-doses-administered-cdc-rcna48960 

Less than 4% of eligible people have gotten updated Covid booster shots, one month into the rollout. Dr. Scott Roberts, a Yale Medicine infectious disease specialist, said the relatively low booster uptake was "demoralizing."

Fool us once but not the second time?