Year
Month
(Peer-Reviewed) Natural history and cycle threshold values analysis of COVID-19 in Xiamen City, China
Bin Deng ¹, 邓彬 Weikang Liu 刘炜康 ¹, Zhinan Guo 郭志南 ², Li Luo 罗丽 ¹, Tianlong Yang 杨天龙 ¹, Jiefeng Huang 黄杰锋 ¹, Buasiyamu Abudunaibi ¹, Yidun Zhang ², Xue Ouyang 欧阳雪 ², Demeng Wang ², Chenghao Su 苏成豪 ³, Tianmu Chen 陈田木 ¹
¹ State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen City, Fujian Province, People's Republic of China
中国 厦门 厦门大学公共卫生学院 分子疫苗学和分子诊断学国家重点实验室
² Xiamen Center for Disease Control and Prevention, Xiamen City, Fujian Province, People's Republic of China
中国 厦门 厦门市疾病预防控制中心
³ Zhongshan Hospital, Fudan University (Xiamen Branch), Xiamen City, Fujian Province, People's Republic of China
中国 厦门 复旦大学附属中山医院厦门医院
Abstract

Objective

This study elaborated the natural history parameters of Delta variant, explored the differences in detection cycle thresholds (Ct) among cases.

Methods

Natural history parameters were calculated based on the different onset time and exposure time of the cases. Intergenerational relationships between generations of cases were calculated. Differences in Ct values of cases by gender, age, and mode of detection were analyzed statistically to assess the detoxification capacity of cases.

Results

The median incubation period was 4 days; the detection time for cases decreased from 25 to 7 h as the outbreak continued. The average generation time (GT), time interval between transmission generations (TG) and serial interval (SI) were 3.6 ± 2.6 days, 1.67 ± 2.11 days and 1.7 ± 3.0 days. Among the Ct values, we found little differences in testing across companies, but there were some differences in the gender of detected genes. The Ct values continuous to decreased with age, but increased when the age was greater than 60.

Conclusion

This epidemic was started from aggregation of factories. It is more reasonable to use SI to calculate the effective reproduction number and the time-varying reproduction number. And the analysis of Ct values can improve the positive detection rate and improve prevention and control measures.
Natural history and cycle threshold values analysis of COVID-19 in Xiamen City, China_1
Natural history and cycle threshold values analysis of COVID-19 in Xiamen City, China_2
Natural history and cycle threshold values analysis of COVID-19 in Xiamen City, China_3
Natural history and cycle threshold values analysis of COVID-19 in Xiamen City, China_4
  • Multi-wavelength nanowire micro-LEDs for future high speed optical communication
  • Ayush Pandey, Zetian Mi
  • Opto-Electronic Advances
  • 2024-03-20
  • Luminescence regulation of Sb3+ in 0D hybrid metal halides by hydrogen bond network for optical anti-counterfeiting
  • Dehai Liang, Saif M. H. Qaid, Xin Yang, Shuangyi Zhao, Binbin Luo, Wensi Cai, Qingkai Qian, Zhigang Zang
  • Opto-Electronic Advances
  • 2024-03-20
  • Breaking the optical efficiency limit of virtual reality with a nonreciprocal polarization rotator
  • Yuqiang Ding, Zhenyi Luo, Garimagai Borjigin, Shin-Tson Wu
  • Opto-Electronic Advances
  • 2024-03-20
  • Ultrahigh performance passive radiative cooling by hybrid polar dielectric metasurface thermal emitters
  • Yinan Zhang, Yinggang Chen, Tong Wang, Qian Zhu, Min Gu
  • Opto-Electronic Advances
  • 2024-03-12
  • Simultaneously realizing thermal and electromagnetic cloaking by multi-physical null medium
  • Yichao Liu, Xiaomin Ma, Kun Chao, Fei Sun, Zihao Chen, Jinyuan Shan, Hanchuan Chen, Gang Zhao, Shaojie Chen
  • Opto-Electronic Science
  • 2024-02-29
  • Generation of lossy mode resonances (LMR) using perovskite nanofilms
  • Dayron Armas, Ignacio R. Matias, M. Carmen Lopez-Gonzalez, Carlos Ruiz Zamarreño, Pablo Zubiate, Ignacio del Villar, Beatriz Romero
  • Opto-Electronic Advances
  • 2024-02-26
  • Acousto-optic scanning multi-photon lithography with high printing rate
  • Minghui Hong
  • Opto-Electronic Advances
  • 2024-02-26
  • Tailoring electron vortex beams with customizable intensity patterns by electron diffraction holography
  • Pengcheng Huo, Ruixuan Yu, Mingze Liu, Hui Zhang, Yan-qing Lu, Ting Xu
  • Opto-Electronic Advances
  • 2024-02-26
  • Miniature tunable Airy beam optical meta-device
  • Jing Cheng Zhang, Mu Ku Chen, Yubin Fan, Qinmiao Chen, Shufan Chen, Jin Yao, Xiaoyuan Liu, Shumin Xiao, Din Ping Tsai
  • Opto-Electronic Advances
  • 2024-02-26
  • Data-driven polarimetric imaging: a review
  • Kui Yang, Fei Liu, Shiyang Liang, Meng Xiang, Pingli Han, Jinpeng Liu, Xue Dong, Yi Wei, Bingjian Wang, Koichi Shimizu, Xiaopeng Shao
  • Opto-Electronic Science
  • 2024-02-24
  • Towards the performance limit of catenary meta-optics via field-driven optimization
  • Siran Chen, Yingli Ha, Fei Zhang, Mingbo Pu, Hanlin Bao, Mingfeng Xu, Yinghui Guo, Yue Shen, Xiaoliang Ma, Xiong Li, Xiangang Luo
  • Opto-Electronic Advances
  • 2024-01-31
  • Broadband high-efficiency dielectric metalenses based on quasi-continuous nanostrips
  • Xiaohu Zhang, Qinmiao Chen, Dongliang Tang, Kaifeng Liu, Haimo Zhang, Lintong Shi, Mengyao He, Yongcai Guo, Shumin Xiao
  • Opto-Electronic Advances
  • 2024-01-31



  • Label-free trace detection of bio-molecules by liquid-interface assisted surface-enhanced Raman scattering using a microfluidic chip                                Graphene photodetector employing double slot structure with enhanced responsivity and large bandwidth
    About
    |
    Contact
    |
    Copyright © PubCard