Dr. Anthony Fauci says it's not out of the question that the United States could have a viable coronavirus vaccine by January. The director of the National Institute of Allergy and Infectious Diseases told Savannah Guthrie on TODAY Thursday that the government is quickly working on getting an answer to whether a vaccine is effective before beginning to manufacture hundreds of millions of doses. "We want to go quickly, but we want to make sure it's safe and it's effective," Fauci said. "I think that is doable if things fall in the right place.”