The Transmission Panorama and Epidemic Characteristics of SARS-CoV-2 of Jining City of China

Year 2021, , 108 - 114, 25.06.2020

Jianwei Zhou Cui Kong Yu Li

https://doi.org/10.5455/umj.20210226075839

Abstract

Introduction: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread in hundreds of countries and made millions of people infected and more than two hundred thousand of death.
Methods: This study retrospectively analyzed the data for the SARS-CoV-2 epidemic which ranged from Jan 24 to Feb 16, 2020. The source of the data was the reports about SARS-CoV-2 issued by the authority of Jining City. The materials, the traveling history, the transmission, the gender, and the age of the infected persons were deeply analyzed.
Results: There were 52 cases with SARS-CoV-2 infection in Jining City, including 20 females (38.5%). The average age for the infected persons was 45.3 years, and the cases numbers of the age stage of 31-40 and 41-50 years were all 14 cases with a total proportion of 53.8%. 23 cases were the primary infectors and 14 persons had obvious traveling experience in other provinces. There was one event of four generations of transmission; most of the primary infectious persons did not transmit the virus to others.
Conclusion: Jining City has the relative specific epidemic characteristic of SARS-CoV-2. This character of restricted transmission indicates that the prevention strategy is effective and worthy to learn.

Keywords

SARS-CoV-2, transmission panorama, epidemic, Jining City

References

• WHO. WHO Coronavirus Disease (COVID-19) Dashboard - Data last updated: 2021/1/23, 4:57 pm CET. 2021, https:// covid19.who.int
• Du W, Han S, Li Q, Zhang Z. Epidemic update of COVID-19 in Hubei Province compared with other regions in China. Int J Infect Dis. 2020;95:321-325
• Wan S, Xiang Y, Fang W, Zheng Y, Li B, Hu Y, et al. Clinical features and treatment of COVID-19 patients in northeast Chongqing. J Med Virol. 2020; 92(7):797-806
• Yang K, Ren MH, Xiao LY, Liu YF, Shi DY, Lu H, et al. Epidemiological and clinical characteristics of 57 cases of new coronavirus pneumonia in non-epidemic areas. Journal of Third Military Medical University, 2020,42(6),555-559
• Yin X, Riva L, Pu Y, Martin-Sancho L, Kanamune J, Yamamoto Y, et al. MDA5 Governs the Innate Immune Response to SARS- CoV-2 in Lung Epithelial Cells. Cell Rep. 2021;34(2):108628
• Dong X. Confucious vs Einstein: Who would be a better gerontologist? Innov Aging. 2018, 2(Suppl 1):347
• Than LT, Nguyen TV, Luong QC, Nguyen TV, Ngyyen HT, Le HQ, et al. Importation and Human-to-Human Transmission of a Novel Coronavirus in Vietnam. N Engl J Med. 2020;382(9): 872-874
• Zhou F, Yu T, Du R, Guan F, Liu Y, Liu Z, et al. Clinical course and risk factors for mortality of adult inpatients with COVID-19 in Wuhan, China: a retrospective cohort study. Lancet. 2020; 395(10229):1054-1062
• Ryu S, Chun BC, Korean Society of Epidemiology 2019-nCoV Task Force Team. An interim review of the epidemiological characteristics of 2019 novel coronavirus. Epidemiol Health. 2020; 42:e2020006
• Huang C, Wang Y, Li X, Ren L, Zhao J, Hu Y, et al. Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. Lancet 2020; 395:497-506
• Wang D, Hu B, Hu C, Zhu F, Liu X, Zhang J, et al. Clinical characteristics of 138 hospitalized patients with 2019 novel coronavirus-infected pneumonia in Wuhan, China. JAMA. 2020;323(11):1061-1069
• Fang XW, Mei Q, Yang TJ, Zhang L, Yang Y, Wang YZ, et al. Clinical characteristics and treatment strategies of 79 patients with COVID-19. Chinese Pharmacological Bulletin. 2020; 36(4):12-18
• Guan WJ, Ni ZY, Hu Y, Liang WH, Ou CQ, He JX. Clinical Characteristics of Coronavirus Disease 2019 in China. N Engl J Med. 2020; 382(18):1708-1720
• Hu Z, Song C, Xu C, Jin G, Chen Y, Xu X, et al. Clinical characteristics of 24 asymptomatic infections with COVID-19 screened among close contacts in Nanjing, China. Sci China Life Sci. 2020
• Chen N, Zhou M, Dong X, Qu J, Gong F, Han Y, et al. Epidemiological and clinical characteristics of 99 cases of 2019 novel coronavirus pneumonia in Wuhan, China: a descriptive study. Lancet. 2020; 395(10223):507-513
• Epidemiology Working Group for NCIP Epidemic Response, Chinese Center for Disease Control and Prevention. The epidemiology characteristics of an outbreak of 2019 novel coronavirus disease (COVID-19) in China. Chin J Epidemiol. 2020; 41(2):145-151
• Lin JF, Wu MN, Wu HC, Zhang T, Wu C, Li FD. Epidemiological characteristics of coronavirus diseases 2019 in Zhejiang Province Preventive Medicine. 2020, 32(3):217-221,225
• Zhuang YJ, Chen Z, Li J, Yang XL, Li J, Yuan Y, et al. Clinical and epidemiological characteristics of 26 patients diagnosed with novel coronavirus pneumonia. Chin J Nosocomial. 2020; 30(6): 817-820
• Liang JR, Wei SH, Qian XF, Liu YM, Yang HY, Yang Y, et al. Epidemiological and clinical characteristics of 14 cases of COVID-19.Chinese Journal of Infection Control. 2020;19(3):1-5
• Jining Municipal Health Commission. The epidemic status of SARS-Cov-2 in Jining City. 2020; http://wjw.jining.gov.cn/ art/2020/2/18/art_59856_2452811.html
• Chu DK, Akl EA, Duda S, Solo K, Yaacoub S, Schünemann HJ. COVID-19 Systematic Urgent Review Group Effort (SURGE) study authors. Physical distancing, face masks, and eye protection to prevent person-to-person transmission of SARS-CoV-2 and COVID-19: a systematic review and meta- analysis. Lancet. 2020; 395(10242):1973-1987
• Liu W, Yue XG, Tchounwou PB. Response to the COVID-19 Epidemic: The Chinese Experience and Implications for Other Ulutas Med J 2021;7(2):108-114
• Chan JF, Yuan S, Kok KH, To KK, Chu H, Yang J, et al. A familial cluster of pneumonia associated with the 2019 novel corona transmission: a study of a ancet. 2020; 395(10223):514-523