你信谁？我们拭目以待。
A WH official says they are “absolutely on track” to have a Covid-19 vaccine by the end of the year.
Dr. Sanjay Gupta: “When people hear that, what people are wanting is, when does a vaccine become available to me? … We talked to scientists … that’s not until next year.” pic.twitter.com/3EuUAlbn17
— CNN (@CNN) August 28, 2020