Nebraska could get its first doses of drug-maker Johnson & Johnson’s new coronavirus vaccine as early as this week. Gov. Pete Ricketts says the state has been allowed to order up 15,000 doses, but state officials don’t yet know how much they’ll get. The announcement came days after the U.S. Food and Drug Administration approved the vaccine, clearing the way for a third shot that’s shown to be effective. Unlike the vaccines from manufacturers Pfizer and Moderna, which require two doses to provide full immunity, the Johnson & Johnson vaccine can be delivered in one shot. Ricketts says the state also expects to get 18,720 Pfizer doses and 17,000 Moderna doses this week.