为什么有的人打完新冠疫苗，还是感染了？

为什么有的人打完新冠疫苗，还是感染了？ 参考文献[1]《医学免疫学》人民卫生出版社，第九版[2]Scheepers C ,  Everatt J ,  Amoako D G , et al. The continuous evolution of SARS-CoV-2 in South Africa: a new lineage with rapid accumulation of mutations of concern and global detection.  2021.[3]Ma C ,  Xu S ,  Yao Y , et al. Mild Breakthrough Infection in a Healthcare Professional Working in the Isolation Area of a Hospital Designated for Treating COVID-19 Patients — Shaanxi Province, China, March, 2021[J]. China CDC Weekly, 2021, 3(19):397-400.[4]Pan HX, Wu QH, Zeng G, et al. Immunogenicity and safety of a third dose, and immune persistence of CoronaVac vaccine in healthy adults aged 18-59 years: interim results from a double-blind, randomized, placebo-controlled phase 2 clinical trial. medrxiv. 2021.07.23.21261026v1.[5]Thomas Stephen, Moreira Edson, et al. Six Month Safety and Efficacy of the BNT162b2 mRNA COVID-19 Vaccine. MedRxiv. 2021 July 28.https://doi.org/10.1101/2021.07.28.21261159[6]Pan HX, Wu QH, Zeng G, et al. Immunogenicity and safety of a third dose, and immune persistence of CoronaVac vaccine in healthy adults aged 18-59 years: interim results from a double-blind, randomized, placebo-controlled phase 2 clinical trial. medrxiv. 2021.07.23.21261026v1.来源：腾讯医典
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