Lawton Graham
New Sci. 2020 Nov 14;248(3308):8-9. doi: 10.1016/S0262-4079(20)31984-9. Epub 2020 Nov 13.
The company says its vaccine is 90 per cent effective. What does this really mean and what do we still need to know? reports.
该公司表示其疫苗有效性为90%。这到底意味着什么,我们还需要了解什么?报道称。