Oxford University’s Vaccine Made an Important Milestone after Being Tested on Human 🧪 Oxford University's vaccine against coronavirus is safe and produces an immune response, the first human results have shownExperts hailed the results as a "really important milestone" Read more: https://t.co/GHRcH1UcMm pic.twitter.com/Ac1PVDiSv9— The Telegraph (@Telegraph) July 20, 2020