Facebook owner Meta Platforms Inc said on Wednesday it had removed accounts used by an influence operation originating in China that promoted claims of a fake “Swiss biologist” saying the United States was interfering in the search for Covid-19’s origins. Meta said in a report the social media campaign was “largely unsuccessful” and targeted English-speaking audiences in the United States and Britain and Chinese-speaking audiences in Taiwan, Hong Kong and Tibet. Claims by “Swiss biologist” Wilson Edwards were widely quoted by Chinese state media in July. In August, several Chinese newspapers removed comments and deleted articles quoting him after the...