Dr Anthony Fauci, the United States' top infectious disease expert, said on Friday at a congressional hearing that he was "cautiously optimistic" that there will be a vaccine for the coronavirus by the "end of this year and as we go into 2021." <br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
