Early success of COVID-19 vaccine candidates fuels optimism, but experts warn ‘a lot has to go right’
Propelled by encouraging results from early experiments, the clock has ticked forward one hour since June in USA TODAY’s countdown to a vaccine against COVID-19. For July, the hands sit at 5 a.m., our panel of experts estimates.
Midnight is the starting point of the pandemic in the USA, and noon is the time a vaccine will be widely available to Americans, so this race is far from over.
“These first steps simply mean that we haven’t fallen at the first hurdle,” said Dr. Kelly Moore, associate director of immunization education with the Immunization Action Coalition. “That doesn’t change the