NEW: 42% say Pfizer & Moderna 2 shot, J&J 1 shot regimen sufficient

On today's What America's Thinking, a new Hill-HarrisX poll reveals how Americans define "fully vaccinated." The survey was conducted online within the United States from November 29-30 among 924 registered voters by Harris X. The sampling margin of error of this poll is plus or minus 3.2 percentage points.