Joe Biden’s scientific advisers will meet with vaccine makers in coming days as the presidential transition remains stalled because of President Donald Trump’s refusal to acknowledge that he lost the election. That delayed handoff is especially problematic during a public health crisis, the government’s top infectious disease expert said. “Of course it would be better if we could start working with them,” said Dr. Anthony Fauci … He likened the process to runners passing on the baton in a relay race. “You don’t want to stop and then give it to somebody,” he said. “You want to just essentially keep going.”