DAVID SHEPARDSON THE U.S. Center for Disease Control and Prevention (CDC) has advised that fully vaccinated people do not need to wear masks outdoors and can avoid wearing them indoors in most places, updated guidance the agency said will allow life to begin to return to normal. The CDC, which hopes the guidance will prod more Americans to get vaccinated, also said fully immunized people will not need to physically distance in most places. The turnaround came just 16 days since CDC issued revised guidance that left many restrictions in place for vaccinated people. The agency came under fire in…