A new study suggests the Oxford-AstraZeneca COVID-19 vaccine cuts transmission of the virus by two-thirds and prevents severe disease. Oxford University released the results on Wednesday. The research has not yet been peer reviewed, meaning other scientists have not examined it. But, Britain’s Health Secretary Matt Hancock told broadcaster Sky News the findings are “very good news.” Hancock said the latest results showed the AstraZeneca vaccine slows spread of the virus by about 66 percent. He added that the study also found the vaccine injections were highly protective after a single dose. The head of research and development for AstraZeneca, Mene Pangalos, told reporters no patients had experienced severe disease or hospitalization three weeks after receiving a first dose.