Potential Vaccine Maker Ready to Deliver Billion Doses if Tests Succeed AstraZeneca is awaiting early stage clinical results of its potential COVID-19 vaccine being developed with Oxford University. Having received over $1 billion from the U.S., the British drugmaker said it can deliver a billion doses if tests are successful https://t.co/aA0H9cYu8I pic.twitter.com/Z2xCSylygE— Reuters (@Reuters) May 21, 2020