Scientists warn Americans are expecting too much from a vaccine

Scientists warn Americans are expecting too much from a vaccine: The White House and many Americans have pinned their hopes for defeating the COVID-19 pandemic on a vaccine being developed at "warp speed." But some scientific experts warn they're all expecting too much, too soon. "Everyone thinks COVID-19 will go away with a vaccine," said Dr. William Haseltine, chair and president of Access Health International, a foundation that advocates for affordable care.