疫苗前沿 | 二次感染新冠病毒风险到底有多大？迄今最大规模人口研究结果发布

参考资料：[1] Risk of SARS-CoV-2 reinfection after natural infection.(2021). Boyton and Altmann. The Lancet, DOI:https://doi.org/10.1016/S0140-6736(21)00662-0[2] Hansen et al., (2021). Assessment of protection againstreinfection with SARS-CoV-2 among 4 million PCR-tested individuals in Denmarkin 2020: a population-level observational study. The Lancet, DOI:https://doi.org/10.1016/S0140-6736(21)00575-4

来源：药明康德