Fauci calls 'outdated' data in AstraZeneca's US vaccine trial 'unfortunate'

Dr. Anthony Fauci, the nation’s top infectious disease expert, on Tuesday criticized what he described as "outdated" information in AstraZeneca’s U.S. vaccine trial as "unfortunate" and acknowledged concerns with accuracy could lead to problems getting more Americans to take the vaccine.

"It really is unfortunate that this happened. This is really what you call an unforced error because the fact is this is very likely a very good vaccine," Fauci told ABC's Robin Roberts "Good Morning America." He added, "This kind of thing does ... really cast some doubt about the vaccines and maybe contribute to the hesitancy. It was not necessary."