Two potential coronavirus vaccines have shown promising results in early trials, and while experts say it's encouraging news, they warn that some of the biggest hurdles still lie ahead.
The newly released clinical trial results showed that the Oxford-AstraZeneca vaccine candidate, which can recognize and attack virus cells. The multipronged immune response may be key, because researchers are still trying to figure out whether one is more important than the other in providing long-term protection.
In addition to evaluating whether the vaccines can prevent coronavirus infections, this stage of testing is designed to assess how the potential vaccine performs across more diverse populations. "Here in the U.S., I want to see the people most heavily affected enrolled in the studies," he said."We need African Americans, Hispanic and older populations enrolled. There's no benefit if we enroll a bunch of middle-class white people who have a lower incidence of the disease."
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