As the world slouches towards normalcy, seemingly-small decisions about COVID-19 protocols are having surprising impacts on people’s lives. As the latest example, Bruce Springsteen’s upcoming revival of his Tony Award-winning show Springsteen on Broadway has announced that audience members must have received an FDA-approved vaccine, which makes it off-limits to people in other countries who got the AstraZeneca jab. So far, the US Food and Drug Administration has provided emergency use authorizations (EUAs) for three vaccines: Moderna, Pfizer-BioNTech, and Johnson & Johnson. AstraZeneca has sought an EUA, but in April the FDA asked for extra data amid evidence that the vaccine was linked to rare occurrences of blood clots. A similar issue led to an 11-day pause on the Joh...