Viral infection and Transmission in a large well-traced outbreak caused by the Delta SARS-CoV-2 variant

@inproceedings{Li2021ViralIA,
  title={Viral infection and Transmission in a large well-traced outbreak caused by the Delta SARS-CoV-2 variant},
  author={B. Li and Amei Deng and K. Li and Y. Hu and Z Li and Qianling Xiong and Z. Liu and Qianfang Guo and Li-rong Zou and H Zhang and M. Zhang and Fan-xian Ouyang and J. Su and W Su and J. Xu and H. Lin and J. Sun and J. Peng and H. Jiang and Pp Zhou and T. Hu and Mina Luo and Y. Zhang and H. Zheng and J P Xiao and T. Y. Liu and Rongfei Che and Huashu Zeng and Z. Zheng and Y. Huang and J. Yu and Longyu Yi and J. Wu and J. Chen and Huaqing Zhong and X. Deng and Min Kang and OG Pybus and Matthew D Hall and Katrina A. Lythgoe and Y L Li and Ji Yuan and J. C. He and J. Lu},
  booktitle={medRxiv},
  year={2021}
}
We report the first local transmission of the Delta SARS-CoV-2 variant in mainland China. All 167 infections could be traced back to the first index case. The investigation on daily sequential PCR testing of the quarantined subjects indicated the viral load of the first positive test of Delta infections was ~1000 times higher than that of the 19A/19B strains infections back in the initial epidemic wave of 2020, suggesting the potential faster viral replication rate and more infectiousness of… 
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