23. February 2021 · Comments Off on Scientific American: Experts Answer the Biggest COVID Vaccine Questions · Categories: 其他

What does “95 percent effective” mean? Should you get vaccinated if you have had COVID? Is there a best vaccine?
By Jim Daley on February 19, 2021
https://www.scientificamerican.com/article/experts-answer-the-biggest-covid-vaccine-questions1/?utm_source=newsletter&utm_medium=email&utm_campaign=health&utm_content=link&utm_term=2021-02-22_top-stories&spMailingID=69705890&spUserID=NDU1OTQxMDM5ODE2S0&spJobID=2062382301&spReportId=MjA2MjM4MjMwMQS2