Birx said the projections by Dr. Anthony Fauci that U.S. deaths could range from 1.6 million to 2.2 million is a worst case scenario if the country did "nothing" to contain the outbreak, but said even "if we do things almost perfectly," she still predicts up to 200,000 U.S. deaths. "I think everyone understands now that you can go from five to 50 to 500 to 5,000 cases very quickly," Birx said. "I think in some of the metro areas we were late in getting people to follow the 15-day guidelines," she added.