以前疫苗都经过多年实验,现在是非常时期,取舍要考虑有效和副作用balance疫苗之路崎岖漫长
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California health official urges halt to 300,000 Moderna vaccinations after reports of allergic reactions
California's state epidemiologist is urging a halt to more than 300,000 coronavirus vaccinations using a Moderna vaccine version because some people received...www.marketwatch.com