Early Oxford-AstraZeneca Coronavirus Vaccine Data 'Encouraging,' Scientists Say
![An experimental vaccine candidate being developed by AstraZeneca and Oxford University to protect against COVID-19 triggered an immune response against the coronavirus and appeared to be safe.](https://media.npr.org/assets/img/2020/07/20/gettyimages-1227706999_wide-4f7bfa197f964201c53aa3a4fd7aa5a9c8f875ee.jpg?s=600)
Testing in more than 1,000 people found the vaccine spurred an immune response and had no severe side effects. Larger trials are underway.
(Image credit: Paul Ellis/AFP via Getty Images)
![](https://media.npr.org/include/images/tracking/npr-rss-pixel.png?story=893211400)