Fauci: "Not great" chances that COVID-19 vaccine will be 98% effective

• FDA commissioner Stephen Hahn argues that while a higher benchmark would be ideal, 50% guaranteed protection is an acceptable standard, given the circumstances.
• "For the most part, I think, infectious disease experts have agreed that that’s a reasonable floor, of course hoping that the actual effectiveness will be higher," Hahn said in July.

What he's saying: Fauci told attendees at Brown University's School of Public Health during a Q&A session that, "The chances of it being 98% effective is not great, which means you must never abandon the public health approach."

• “We don’t know yet what the efficacy might be. We don’t know if it will be 50% or 60%. I’d like it to be 75% or more."
• "You’ve got to think of the vaccine as a tool to be able to get the pandemic to no longer be a pandemic, but to be something that’s well controlled," he added.