https://apnews.com/2095986c043491c82bed1e6b5b6245bc > LONDON — Scientists at Oxford University have released more data that confirm coronavirus vaccines made by Pfizer-BioNTech and AstraZeneca both significantly cut the risk of infection after a single dose. > In studies published on Friday, researchers said there was no apparent difference in the vaccines’ ability to reduce COVID-19 infection rates.