KGO ABC World News Tonight With David Muir September 9, 2020 00:38:00
Over any potential political pressure leading up to the election. here's abc's steve osunsami. >> reporter: a possible setback this evening. the final stages of human trials at the university of oxford are being put on hold because one of their volunteers reportedly suffered a suspected serious adverse reaction. a spokesman for the company developing the drug tells a medical news service that they're now hoping to minimize any potential impact of the trial timeline. the chief executives of nine drugmakers who are racing to produce a vaccine that prevents covid-19 are promising the world tonigh...