Fauci Says It's a Matter of 'When Not If' for a Covid-19 Vaccine

The transcript discusses the progress of multiple vaccine candidates, with one entering phase three trials in July. It highlights the importance of safety and efficacy testing in the field, while expressing cautious optimism due to financial risks taken to expedite development. The goal is to have vaccines available to the public by the end of the year or early 2021.

What is the significance of the phase three study mentioned in the text?

What does the text imply about the future of vaccine candidates based on preliminary studies?

What factors contribute to the cautious optimism expressed in the text regarding vaccine safety and efficacy?

How does the text describe the financial risks associated with vaccine development?

What timeline is suggested for the availability of favorable vaccine candidates to the American public?