Germany’s Robert Koch Institute (RKI) withdrew a report on Wednesday that claimed a coronavirus vaccine was imminent. The public health agency said the document was published in error. The paper, which has now been removed from the institute’s website, was an out-of-date version of a document being worked on by the agency, an RKI spokeswoman said. Earlier on Wednesday, the RKI released the document which proclaimed a vaccine could be available as early this fall. The agency produced a German-language paper entitled “The pandemic in Germany in the coming months.” It said: “Preliminary projections make the availability of one or...