Biden lays out a three-question test for any future Covid-19 vaccine

Joe Biden trusts scientists and the vaccines they're working to produce, he said as part of a speech yesterday on the path forward for a Covid-19 vaccine. But he doesn't trust that the Trump administration will authorize a vaccine based solely on science and not on politics. In his speech, the Democratic presidential nominee laid out a three-question test that any Covid-19 vaccine will need to meet before he endorses its use: What criteria will be used to ensure a vaccine meets scientific standards, which scientists will validate that the decision was driven by scientists, and how can Americans trust the administration's vaccine-distribution plan? One thing Biden didn't do, however: lay out his own plan for vaccine distribution, something he said he's been "calling for for months."