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Peng YJ, Li YH, Du C, Guo YS, Song JT, Jia CY, Zhang X, Liu MJ, Wang ZM, Liu B, Yan SL, Yang YX, Tang XL, Lin GX, Li XY, Zhang Y, Yuan JH, Xu SK, Chen CD, Lu JH, Zou X, Wan CS, Hu QH. [The cases of tracing the source of patients infected with Omicron variant of SARS-CoV-2 based on wastewater-based epidemiology in Shenzhen]. Zhonghua Yi Xue Za Zhi 2024; 104:302-307. [PMID: 38246776 DOI: 10.3760/cma.j.cn112137-20231016-00766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Wastewater-based epidemiology (WBE) is an emerging discipline, which has been applied to drug abuse tracking and infectious disease pathogen surveillance. During the COVID-19 epidemic, WBE has been applied to monitor the epidemic trend and SARS-CoV-2 variants etc. In order to detect hidden COVID-19 cases and prevent transmission in the community, wastewater surveillance system for monitoring SARS-CoV-2 RNA was developed in Shenzhen. The sewage sampling sites were set up in key places such as the port areas, urban villages and residential communities of Futian, Nanshan, Luohu and Yantian districts. From July 26 to November 30, 2022, a total of 369 sewage sampling sites were set up, covering 1.93 million people. Continuous sampling was carried out for 3 hours in the peak period of water use every day. Sewage virus enrichment and SARS-CoV-2 nucleic acid detection were carried out by polyethylene glycol precipitation method and RT-qPCR, and a positive water sample disposal process was molded. This article aims to introduce the case of source tracing of COVID-19 infected patients based on urban sewage in Shenzhen. The sewage monitoring of Honghu water treatment plant in Luohu District played an early warning role, and the source of infection was traced. In the disposal of positive water samples in Futian South Road, Futian District, the important experience of monitoring point layout was obtained. In the sewage monitoring of Nanshan village, Nanshan District, the existence of occult infection was revealed. Sharing the experience of tracing the source of COVID-19 patients to avoid the spread of COVID-19 in the community based on wastewater surveillance of SARS-CoV-2 RNA in Shenzhen, and summarizing the advantages and application prospects of sewage surveillance can provide new ideas for monitoring emerging or re-emerging pathogens that are known to exhibit gastrointestinal excretion in the future.
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Affiliation(s)
- Y J Peng
- Biosafety Research Center, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Y H Li
- Microbiology Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - C Du
- Microbiology Laboratory, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Y S Guo
- Division of Public Health Emergency, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - J T Song
- Water Ecology and Environment Division, Shenzhen Ecology and Environment Bureau, Shenzhen 518040, China
| | - C Y Jia
- Water Ecology and Environment Division, Shenzhen Ecology and Environment Bureau, Shenzhen 518040, China
| | - X Zhang
- Water Ecology and Environment Division, Shenzhen Ecology and Environment Bureau, Shenzhen 518040, China
| | - M J Liu
- Futian District Water Affairs Bureau, Shenzhen 518035, China
| | - Z M Wang
- Futian District Water Affairs Bureau, Shenzhen 518035, China
| | - B Liu
- Division of Water Supply and Drainage Management, Futian District Water Affairs Bureau, Shenzhen 518035, China
| | - S L Yan
- Division of Drainage and Disaster Prevention, Nanshan District Water Affairs Bureau, Shenzhen 518052, China
| | - Y X Yang
- Division of Drainage and Disaster Prevention, Nanshan District Water Affairs Bureau, Shenzhen 518052, China
| | - X L Tang
- Luohu Management Branch of Ecology Environment Bureau of Shenzhen Municipality, Shenzhen 518001, China
| | - G X Lin
- Division of Environmental Management, Luohu Management Branch of Ecology Environment Bureau of Shenzhen Municipality, Shenzhen 518001, China
| | - X Y Li
- Futian District Center for Disease Control and Prevention, Shenzhen 518040, China
| | - Y Zhang
- Department of Microbiological Laboratory, Futian District Center for Disease Control and Prevention, Shenzhen 518040, China
| | - J H Yuan
- Nanshan District Center for Disease Control and Prevention, Shenzhen 518054, China
| | - S K Xu
- Department of Infectious Disease Control and Prevention, Nanshan District Center for Disease Control and Prevention, Shenzhen 518054, China
| | - C D Chen
- Luohu District Center for Disease Control and Prevention, Shenzhen 518020, China
| | - J H Lu
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - X Zou
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - C S Wan
- Biosafety Research Center, School of Public Health, Southern Medical University, Guangzhou 510515, China BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Q H Hu
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
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Guo ZB, Wang YH, Xu SK. Phase condensation and evaporation: Another look at wave-particle interactions and Landau damping. Phys Rev E 2020; 101:030201. [PMID: 32289950 DOI: 10.1103/physreve.101.030201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 02/03/2020] [Indexed: 11/07/2022]
Abstract
Phase synchronization is a universal concept in macro- and microstate coupling of complex systems. In this Rapid Communication, we demonstrate the existence of phase synchronization dynamics in a wave-particle interaction process under the framework of a Vlasov-Poisson (VP) system. Starting from a random phase setup, it is shown that the phases of the electrons spontaneously develop coherent patterns in its velocity space. The most interesting finding is that, mediated by the long-wavelength electrostatic mode, the phases of the electrons tend to attract each other, condense into a mean phase, and form a chimera pattern. Due to the finite-time singularity of the mean phase, the phase pattern gets evaporated and recondenses into a different chimera pattern. For the scenario of a finite wavelength, the random phases rapidly condense to slashing lines, which become steeper and steeper through a sequence of evaporation-condensation processes. The slashing pattern drives the mixing of the distribution function in the velocity space, which then induces the damping of the electrostatic mode. This phase self-organization dynamics uncovers another aspect of wave-particle interaction physics, and sheds light onto the longstanding enigma of Landau damping.
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Affiliation(s)
- Z B Guo
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y H Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - S K Xu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
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Zhao YX, Wang JJ, Zhang L, Zhang S, Su SL, Duan JA, Yao ZZ, Xu SK. Bioactive luteoloside produced by Myroides odoratimimus, solvent-tolerant bacterium form the rhizosphere of Lonicera japonica. Nat Prod Res 2018; 33:3559-3562. [DOI: 10.1080/14786419.2018.1481838] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Y. X. Zhao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine , Nanjing, PR China
| | - J. J. Wang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine , Nanjing, PR China
| | - L. Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine , Nanjing, PR China
| | - S. Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine , Nanjing, PR China
| | - S. L. Su
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine , Nanjing, PR China
| | - J. A. Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine , Nanjing, PR China
| | - Z. Z. Yao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine , Nanjing, PR China
| | - S. K. Xu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine , Nanjing, PR China
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