Study provides first glimpse of efficacy of Oxford-AstraZeneca Covid-19 vaccine
A Covid-19 vaccine being developed by Oxford University and the drug giant AstraZeneca generated an immune response in a study of roughly 1,000 patients, according to interim results published Monday.
The data, published in the medical journal the Lancet, also show that the vaccine caused side effects, including fever, headaches, muscle aches, and injection site reactions, in about 60% of patients. All of the side effects were deemed mild or moderate, and all resolved themselves over the course of the study.

