Mixing Covid-19 vaccines increases the risk of unpleasant, short-term side-effects such as fatigue and fever, according to a UK trial in which people received different jabs for their first and second doses.
英国一项试验显示,混合接种新型冠状病毒肺炎(COVID-19,即2019冠状病毒病)疫苗会增加出现短期副作用(如疲劳和发烧)的风险。在该试验中,人们在第一次和第二次接种的是不同款疫苗。
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