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Several major issues concerning the environmental transmission and risk prevention of SARS-CoV-2

Science China Earth Sciences 2022年第6期65卷 1047-1056页

作者： Jin MA Jian XU Xiaoli ZHAO Shouliang HUO Xiaoli DUAN Yunsong MU Ying WANG Yuan WEI Jiang CHANG Xiaowei JIN Fengchang WU State Key Laboratory of environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China School of Energy and environmental Engineering University of Science and Technology BeijingBeijing 100083China School of Environment and Nature Resource Renmin University of ChinaBeijing 100872China School of Space and Environment Beihang UniversityBeijing 102206China China National environmental Monitoring Centre Beijing 100012China

Coronavirus disease 2019(COVID-19) is the most serious infectious disease pandemic in the world in a century, and has had a serious impact on the health, safety, and social and economic development of all mankind. Since the earth entered the“Anthropocene”, human activities have become the most important driving force of the evolution of the earth system. At the same time, the epidemic frequency of major human infectious diseases worldwide has been increasing, with more than 70% of novel diseases having zoonotic origins. The review of several major epidemics in human history shows that there is a common rule, i.e., changes in the natural environment have an important and profound impact on the occurrence and development of epidemics. Therefore, the impact of the natural environment on the current COVID-19 pandemic and its mechanisms have become scientific issues that need to be resolved urgently. From the perspective of the natural environment, this study systematically investigated several major issues concerning the environmental transmission and risk prevention of Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2). From a macroscopic temporal and spatial scale, the research focus on understand the impact of the destruction of the natural environment and global changes on the outbreak of infectious diseases;the threat of zoonotic diseases to human health;the regularity for virus diffusion, migration and mutation in environmental media;the mechanisms of virus transmission from animals and environmental media to humans;and environmental safety, secondary risk prevention and control of major epidemics. Suggestions were made for future key research directions and issues that need attention, with a view to providing a reference for the prevention and control of the global coronavirus disease 2019, and to improving the ability of response to major public health emergencies.

关键词： SARS-CoV-2 environmental transmission Risk prevention Zoonotic diseases Ecological security

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environmental Stability and Transmissibility of Enveloped Viruses at Varied Animate and Inanimate Interfaces

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环境与健康(英文) 2023年第1期1卷 15-31页

作者： Li Zeng Junya Li Meilin Lv Zikang Li Linlin Yao Jie Gao Qi Wu Ziniu Wang Xinyue Yang Gang Tang Guangbo Qu Guibin Jiang State Key Laboratory of environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China College of Sciences Northeastern UniversityShenyang 110819China School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 310000China Institute of Environment and Health Jianghan UniversityWuhan 430056China

Enveloped viruses have been the leading causative agents of viral epidemics in the past decade,including the ongoing coronavirus disease 2019 outbreak.In epidemics caused by enveloped viruses,direct contact is a common route of infection,while indirect transmissions through the environment also contribute to the spread of the disease,although their significance remains controversial.Bridging the knowledge gap regarding the influence of interfacial interactions on the persistence of enveloped viruses in the environment reveals the transmission mechanisms when the virus undergoes mutations and prevents excessive disinfection during viral epidemics.Herein,from the perspective of the driving force,partition efficiency,and viral survivability at interfaces,we summarize the viral and environmental characteristics that affect the environmental transmission of viruses.We expect to provide insights for virus detection,environmental surveillance,and disinfection to limit the spread of severe acute respiratory syndrome coronavirus 2.

关键词： enveloped virus environmental transmission interface survivability SARS-CoV-2

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Modeling the dynamics of COVID-19 with carrier effect and environmental contamination

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第3期12卷 167-182页

作者： Khalid Hattaf Ahmed A.Mohsen Jamal Harraq Centre Regional des M´etiers de l’Education et de la Formation(CRMEF)20340 Derb Ghalef CasablancaMorocco Laboratory of Analysis Modeling and Simulation(LAMS)Faculty of Sciences Ben M’sik Hassan II University of Casablanca P.O.Box 7955 Sidi Othman Casablanca Morocco Department of Mathematics College of Education for Pure Science(Ibn Al-Haitham)University of Baghdad Iraq Ministry of Education Rusafa 1BaghdadIraq

Nowadays,coronavirus disease 2019(COVID-19)poses a major threat to humanity which is caused by a novel coronavirus in Wuhan,China,at the end of December 2019.This novel coronavirus named the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)according to the International Committee on Taxonomy of Viruses(ICTV).It spreads directly through close contact with an asymptomatic(carrier)or symptomatic person who is coughing,sneezing,talking,singing and kissing.It also spreads indirectly through contact with an environment contaminated by viral particles of SARS-COV-2.In the absence of effective treatment against COVID-19,awareness can play an important role in reducing cases of COVID-19.In this study,we develop a mathematical model to better describe the dynamics of COVID-19 by taking into account the above modes of transmission and the prosocial awareness.The existence,uniqueness,positivity and boundedness of solutions of the model are discussed.All possible equilibrium points are determined.The local asymptotic stability of these equilibrium points is studied.Suitable Lyapunov functionals are constructed to investigate the global dynamics of the model.

关键词： COVID-19 awareness asymptomatic people environmental transmission mathematical modeling

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