Initially hailed as “the vaccine for the world” when it appeared on European shores early this year, the Oxford/AztraZeneca COVID inoculation, which was created in just 65 days at a cost of around $2, far below competing shots made by Pfizer and Moderna, held the promise of turning the tide on the pandemic. The story behind the AstraZeneca vaccine’s European sojourn has been rife with putdowns, broken promises, rancor and vaccine nationalism...