Now that authorized versions are available, it’s tough to recruit volunteers for trials that might give them a placebo. But there are other options.
Akanksha Schwarz doesn’t know which shot she got. She’s part of a clinical trial testing Novavax’s experimental Covid-19 vaccine, a blinded study that injected participants with either the real thing or a placebo. But recently, Schwarz became eligible for one of the three vaccines already cleared by the Food and Drug Administration for public use in the US. Now, she’s got a tough call to make.
Schwarz could stay in the study to help Novavax’s candidate cross the testing finish line. As an
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