1 Shot of Pfizer, AstraZeneca COVID-19 Effective in South Korea
ED JONES/AFP via Getty Images One dose of Pfizer or AstraZeneca vaccines was more than 86% effective at preventing COVID-19, data shows. South Korean health officials said Tuesday that more than 520,000 Koreans over 60 had had a single shot. The data from South Korea didnt show how long protection lasts. A single dose of Pfizer or AstraZenecas COVID-19 vaccines was more than 86% effective at stopping coronavirus in older people at least two weeks after vaccination,...
Source: businessinsider.com