- 该研究分析了来自北京的413个Covid-19样本，这些样本在2021年11月14日至12月20日期间进行了测序。
- 该研究发现，“没有证据表明在那段时间出现了新的变体”。
- 相反，大多数病例（超过90%）是BF.7和BA5.2，这些Omicron亚变体在中国已经存在。
- BF.7占样本的75%，BA5.2占15%以上。
- 该研究的主要作者George Gao表示，这两个已知的Omicron变体是北京Covid-19病例激增的原因，也可能是整个中国的情况。
- 这项研究是有限的，因为它只涵盖了中国取消零Covid措施后的几个星期，而且只包括北京，而不是整个国家。
- 中国也减少了测试，这可能影响了结果。
- 南非斯泰伦博斯大学的病毒学家对来自中国的数据表示欢迎，但警告说，现在发现新的血统可能还为时过早，而且这项研究只涵盖了有限的时间范围和地点。
- 他们希望这项研究将导致更多的开放性，并在未来迅速交换数据。
- The study analyzed 413 Covid-19 samples from Beijing that were sequenced between November 14 and December 20, 2021.
- The study found that “there is no evidence that novel variants emerged” during that time.
- Instead, the majority of the cases (over 90%) were BF.7 and BA5.2, Omicron subvariants which were already present in China.
- BF.7 accounted for 75% of the samples and BA5.2 accounted for over 15%.
- The lead study author, George Gao, stated that the two known Omicron sub-variants were responsible for the surge in Covid-19 cases in Beijing and likely in China as a whole.
- The study is limited as it only covers a few weeks after China lifted its zero-Covid measures and only covers Beijing, not the entire nation.
- China has also reduced its testing, which could have affected the results.
- Virologists from Stellenbosch University in South Africa welcomed the data from China, but cautioned that it may be too early to find new lineages and the study only covers a limited timeframe and location.
- They hope that the study will lead to more openness and prompt exchange of data going forward.
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很不容易。中国这么多的人口，没有产生新的变异，也算是奇迹了。
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