In vitro determination of severe acute respiratory syndrome coronavirus 2 neutralizing antibodies induced in serum samples from recipients of the CoronaVac vaccine showed a short protection period against the original virus strain and limited protection against variants of concern. These data provide support for vaccine boosters, especially variants of concern circulate.

中文翻译：

---

灭活 SARS-CoV-2 疫苗对武汉毒株和关注变种的保护有限

CoronaVac 疫苗接受者的血清样本中诱导的严重急性呼吸系统综合症冠状病毒 2 中和抗体的体外测定表明，对原始病毒株的保护期很短，对相关变异的保护作用有限。这些数据为疫苗加强剂提供了支持，尤其是关注的变种传播。