Operation Warp Speed pledged to do the impossible. How far has it come?

The fastest vaccine ever developed was four years. With billions of dollars invested so far fast tracking the development of the vaccine, it has allowed the vaccine makers produce doses, before knowing of the vaccine works. The idea is that if a vaccine is shown to be protective, use of it can start immediately.

Confusion spreads over selection of priority groups for Covid-19 vaccines

On Tuesday, the National Academy of Medicine, tasked by top U.S. health officials, named an expert panel to develop a framework to determine who should be vaccinated first, when available doses are expected to be scarce. But that panel is ostensibly encroaching on the role of the Advisory Committee on Immunization Practices, a panel that has made recommendations on vaccination policy to the Centers for Disease Control and Prevention for decades, including drawing up the vaccination priority list during the 2009 H1N1 flu pandemic.