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Modeling Cross-Regional Transmission and Assessing the Effectiveness of Restricting Inter-Regional Population Movements in Controlling COVID-19-Xi’an City,Shaanxi Province,China,2021

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China CDC weekly 2022年第31期4卷 685-692,I0002页

作者： Tianlong Yang Yao Wang nankun liu Guzainuer Abudurusuli Shiting Yang Shanshan Yu Weikang liu Xuecheng Yin Tianmu Chen School of Public Health Xiamen UniversityXiamen CityFujian ProvinceChina State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics Xiamen UniversityXiamen CityFujian ProvinceChina Chinese Center for Disease Control and Prevention BeijingChina School of Public Health Yale UniversityNew HavenConnecticutUS

Introduction:The aim of this study was to construct an assessment method for cross-regional transmission of coronavirus disease 2019(COVID-19)and to provide recommendations for optimizing measures such as interregional population movements.Methods:Taking Xi’an City as the example subject of this study’s analysis,a Cross-Regional-Gravitational-Dynamic model was constructed to simulate the epidemic in each district of Xi’an under three scenarios of controlled population movement(Scenario 1:no intensive intervention;Scenario 2:blocking Yanta District on December 18 and blocking the whole region on December 23;and Scenario 3:blocking the whole region on December 23).This study then evaluated the effects of such simulated population control measures.Results:The cumulative number of cases for the three scenarios was 8,901,425,178,and 474,respectively,and the duration of the epidemic was 175,18,and 22 days,respectively.The real world prevention and control measures in Xi’an reduced the cumulative number of cases for its outbreak by 99.98%in comparison to the simulated response in Scenario 1;in contrast,the simulated prevention and control strategies set in Scenarios 2(91.26%)and 3(76.73%)reduced cases even further than the real world measures used in Xi’an.Discussion:The constructed model can effectively simulate an outbreak across regions.Timely implementation of two-way containment and control measures in areas where spillover is likely to occur is key to stopping cross-regional transmission.

关键词： measures prevention Regional

Guang Zeng, China CDC’s Former Chief Expert of Epidemiology

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China CDC weekly 2020年第45期2卷 887-888页

作者： Peter Hao nankun liu Jingjing Xi Feng Tan Chinese Center for Disease Control and Prevention BeijingChina

Guang Zeng was born in Beijing in 1946 and completed his undergraduate studies in the Medical Department of Hebei Medical University in 1970.Zeng then completed a master’s degree in epidemiology from Peking Medical College in 1982.Zeng served as a researcher and PhD supervisor as China CDC’s Chief Expert of Epidemiology(2000–2019);a counselor of the Beijing Municipal Government(2007–present);the seventh chair of the Public Health Branch of the Chinese Medical Association;the founder and honorary consultant of the Chinese Field Epidemiology Training Program(CFETP);a member of the Public Health Emergencies Expert Group of the National Health Commission(NHC)of the People’s Republic of China.

关键词： Expert completed CDC

Wenhua Zhao, China CDC’s Chief Expert of Nutrition

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China CDC weekly 2020年第39期2卷 767-768页

作者： Peter Hao nankun liu Zhenjun Li Jingjing Xi Feng Tan Chinese Center for Disease Control and Prevention BeijingChina

Wenhua Zhao is the China CDC’s Chief Expert of Nutrition and the Chairwoman of the Society for Noncommunicable Diseases(NCDs)Control and Prevention,Chinese Preventive Medicine Association(CPMA).She has been working i... 详细信息

关键词： Expert CDC epidemiology

Jiaqi Ma, China CDC’s Chief Expert of Health Information

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China CDC weekly 2020年第38期2卷 749-750页

作者： Peter Hao nankun liu Zhenjun Li Jingjing Xi Feng Tan Chinese Center for Disease Control and Prevention BeijingChina.

Jiaqi Ma is the Chief Expert of Health Information of China CDC and has been engaged in public health informatics for more than 30 years.As a leading figure,he put forward creative information construction concepts at multiple key periods and led his team to achieve the establishment of the Chinese Information System for Disease Control and Prevention(CISDCP),which represented a major development of China’s public health informatics.

关键词： Expert CDC Health

Yiming Shao, China CDC’s Chief Expert of AIDS

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China CDC weekly 2020年第40期2卷 787-788页

作者： Peter Hao nankun liu Zhenjun Li Jingjing Xi Feng Tan Chinese Center for Disease Control and Prevention BeijingChina

Yiming Shao is China CDC’s Chief Expert of AIDS,the Chairman of the Academic Committee of the National Center for AIDS/STD Control and Prevention(NCAIDS),and the Vice President of the Chinese Microbiology Society(CMS)after chairing the CMS’s Virology Committee(2001–2010).Shao graduated from Qingdao Medical College in 1983 and pursued a PhD at the Institute of Virology in the Chinese Academy of Preventive Medicine.He participated in the diagnosis of China’s first cases of HIV and AIDS,isolated China’s first HIV-1 virus,and developed the initial HIV diagnostic reagents for the country.

关键词： diagnosis Expert AIDS CDC

Chengye Sun,China CDC’s Chief Expert of Poison Control

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China CDC weekly 2021年第18期3卷 394-395页

作者： Yu Chen Peter Hao nankun liu Zhenjun Li Jingjing Xi Feng Tan Chinese Center for Disease Control and Prevention BeijingChina.

In July 1985,Chengye Sun graduated from Henan Medical University and became a physician in a hospital.In 1988,he entered the Chinese Academy of Preventive Medical Sciences for postgraduate studies on occupational medicine,which helped him become a public health professional.The shift from being a clinician to a public health worker helped him realize how external factors could act as strong drivers on human health.

关键词： Expert Sun CDC

Xiaoping Dong,China CDC’s Chief Expert of Virology

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China CDC weekly 2021年第19期3卷 414-415页

作者： Yu Chen Peter Hao nankun liu Zhenjun Li Jingjing Xi Feng Tan Chinese Center for Disease Control and Prevention BeijingChina.

Xiaoping Dong is the Chief Expert of Virology of China CDC,Adjunct Professor at Beijing University and Xi’an Jiaotong University,and Adjunct Principal Investigator(PI)at the Chinese Academy of Science and China Academy of Chinese Medical Sciences.He is a syndic of the Chinese Society of Microbiology and the Head of the Group of Medical Virology.During his roughly 40-year career,he has dedicated himself to the studies of medical virology and molecular biology.

关键词： Expert CDC Dong

Two Reemergent Cases of COVID-19—Hebei Province,China,January 2,2021

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China CDC weekly 2021年第2期3卷 25-27页

作者： Shunxiang Qi Xiang Zhao Peter Hao nankun liu George F.Gao Yang Song Wenbo Xu Qi Li Hebei Provincial Center for Disease Control and Prevention ShijiazhuangHebei ProvinceChina National Institute for Viral Disease Control and Prevention China CDCBeijingChina Chinese Center for Disease Control and Prevention BeijingChina.

On January 2,2021,2 cases of coronavirus disease 2019(COVID-19)were identified in 2 cities of Hebei Province,and genomic sequencing suggested that the cases likely resulted from the same origin.The first case(Patient A)was identified as positive at 12∶18 in Shijiazhuang City,the capital of Hebei Province,and the second case(Patient B)was identified as positive at 21∶00 in Xingtai City.

关键词： Hebei likely COV

A Case of New Variant COVID-19 First Emerging in South Africa Detected in Airplane Pilot—Guangdong Province,China,January 6,2021

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China CDC weekly 2021年第2期3卷 28-29页

作者： Fengjuan Chen Bosheng Li Peter Hao Yang Song Wenbo Xu nankun liu Chunliang Lei Changwen Ke Guangzhou Eighth People’s Hospital GuangzhouGuangdongChina Guangdong Provincial Center for Disease Control and Prevention GuangzhouGuangdongChina Chinese Center for Disease Control and Prevention BeijingChina National Institute for Viral Disease Control and Prevention China CDCBeijingChina.

On January 6,2021,Guangdong CDC successfully isolated the 501Y.V2 variant of coronavirus disease 2019(COVID-19)virus from a throat swab of a patient.The 501Y.V2 variant was first detected in South Africa,and the patient is a 55-year-old male airline pilot of South African nationality.He entered Guangzhou City,the capital of Guangdong Province,from Singapore on the evening of December 8,2020 and was subject to a COVID-19 test.

关键词： Guangdong Africa COV