BRUSSELS—Demand for the COVID-19 vaccine produced by U.S. biotech firm Novavax has been underwhelming in the European Union’s main countries in the early rollout, so far undermining hopes that it could convince vaccine sceptics to get a shot.
Over 85% of adults in the 27-country EU bloc have received at least one dose and nearly two-thirds of them have also had a booster, but tens of millions remain unvaccinated.
