AstraZeneca Says Its COVID-19 Vaccine is 79% Effective

Oxford University and AstraZeneca reported on Monday that their coronavirus "vaccine for the world" was safe and 79 percent effective overall, according to data from a long-awaited clinical trial in the United States, alongside other studies in Chile and Peru. The two-shot regimen was completely effective at preventing severe cases of illness.

In a news release, the Oxford researchers, who developed the easily transported $4 shot for the British-Swedish pharmaceutical giant AstraZeneca, said their coronavirus vaccine is “safe and highly effective, adding to previous trial data from the United Kingdom,...

AstraZeneca’s COVID-19 vaccine provided strong protection against sickness and eliminated hospitalizations and deaths from the disease, including in older adults, in final-stage U.S. testing, the company announced Monday.

AstraZeneca said its experts did not identify any safety concerns related to the vaccine, including finding no increased risk of rare blood clots identified in Europe. The question now is whether the findings will help rebuild public confidence in the vaccine around the world, as the company seeks to win clearance in the United States

In a statement, AstraZeneca said its COVID-19...