Anthony Fauci

Updated at 4:15 p.m. ET

A coronavirus vaccine could be ready for distribution by the end of the year, and distributed to Americans in 2021, the nation's top infectious disease specialist told lawmakers Friday.

While it typically takes years to develop vaccines, new technologies, the lack of bureaucratic red tape and the human body's robust immune response to COVID-19 have hastened the process, Dr. Anthony Fauci said.