Donald Trump has always been the biggest backer of making a vaccine available before the election. He has repeatedly announced the goal in contradiction of the top science officials in his administration, who have suggested that it’s much more likely that Americans will have broad access to an inoculation some time next year.At the same time, Trump, who tested positive for Covid-19 last week and spent the weekend in the hospital, has been losing ground in the polls to Democratic challenger Joe Biden.Slaoui, FDA Commissioner Stephen Hahn and other health officials in the administration have also made clear they won’t be rushed by Trump, pushing the message that the public’s trust that a vaccine is safe and works is far more important than.