The company defended its claims of 79 percent efficacy for its coronavirus shot and said it would release more up-to-date trial results within 48 hours. LONDON — The announcement this week that the AstraZeneca shot, the workhorse of global vaccine rollouts, had achieved nearly 80 percent efficacy in a gold-standard …
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The bad news, coming nearly a week after a million doses of the AstraZeneca-Oxford vaccine arrived in South Africa, was a big setback for the country. South Africa halted use of the AstraZeneca-Oxford coronavirus vaccine on Sunday after evidence emerged that the vaccine did not protect clinical trial volunteers from …
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AstraZeneca and the University of Oxford announced on Monday that their inexpensive, easy-to-produce coronavirus vaccine appears effective, the latest in a string of encouraging results this month from leading vaccine developers. An early analysis of data from late-stage clinical trials found that AstraZeneca’s vaccine was either 62 percent or 90 …
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