Millions of Americans have their lives and livelihoods back and are basking in a summer of freedom. But a divided nation’s varied faith in vaccines and a more infectious Delta variant of the coronavirus are thwarting hopes of a full declaration of independence from the pandemic.Millions of Americans have their lives and livelihoods back and are basking in a summer of freedom. But a divided nation’s varied faith in vaccines and a more infectious Delta variant of the coronavirus are thwarting hopes of a full declaration of independence from the pandemic.