美疾控中心：更新版疫苗有助于预防感染新冠病毒最新变种
美国官员周三（1月25日）表示，辉瑞（Pfizer）和莫德纳（Moderna）两家公司更新版的新冠疫苗加强剂帮助预防了针对新的XBB相关亚变异毒株的有症状感染，为疫苗是否能够对抗这些快速传播的毒株提供了新的证据。
https://www.voachinese.com/a/cdc-covid-vaccines-20230125/6934166.html
https://www.voachinese.com/a/cdc-covid-vaccines-20230125/6934166.html
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(1)對此，路透社亦有相同的報導，參考[1]
References
[1] https://www.reuters.com/business/healthcare-pharmaceuticals/updated-covid-vaccines-prevented-illness-latest-variants-cdc-2023-01-25/Updated COVID vaccines prevented illness from latest variants -CDC
The updated COVID-19 boosters from Pfizer Inc /BioNTech SE and Moderna helped prevent symptomatic infections against the new XBB-related subvariants, offering new evidence of how the vaccines perform
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