El Dr. Anthony Fauci se declara “cautelosamente optimista” acerca del logro de una vacuna contra el coronavirus en 2020

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, testified to a congressional panel that he is “cautiously optimistic that we will have a vaccine by the end of this year and as we go into 2021.

Fuente: Youtube