Dr. Anthony Fauci, a member of the White House coronavirus task force and a national expert on infectious diseases, predicted a coronavirus vaccine will be available for the masses by spring.

Fauci’s projected timeline came days after Pfizer and BioNTech announced that one of its vaccine candidates was found 90% effective in preventing the coronavirus. During a Thursday morning interview on Good Morning America, he predicted a vaccine will likely be available for “the ordinary citizen” by “the second quarter,” specifically the “end of April, early May, May, June.”