Jan.28 -- European Union health chief Stella Kyriakides says drugmaker AstraZeneca Plc needs to "engage fully to rebuild trust" amid a dispute over delivery of its Covid-19 vaccine. The company must "live up to its contractual societal and moral obligations," Kyriakides said Wednesday at a news conference in Brussels. The Anglo-Swedish firm is rejecting EU demands to take supplies of its shot from U.K. factories to increase doses going to the bloc.