Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi
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Zhonghua Liu Xing Bing Xue Za Zhi · Jul 2020
[Challenges to prevent and control the outbreak of COVID-19].
An outbreak of severe pneumonia of unknown cause was reported in December 2019 in Wuhan, Hubei province, China. The infectious virus was soon identified and named as 2019 novel coronavirus (2019-nCoV). ⋯ It has so far caused about 118 000 cases in 114 countries including China ending March 10, and was characterized as a pandemic by WHO on March 11. We still face great challenges in control of the epidemic: uncertain initial source of infection, infected populations widely scattered, complex routs of transmission, populations generally susceptible, high contagiousness of the virus, and finally vaccines unlikely available in the near future.
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Zhonghua Liu Xing Bing Xue Za Zhi · Jun 2020
[Contribution of asymptomatic and pre-symptomatic cases of COVID-19 in spreading virus and targeted control strategies].
The asymptomatic carrier state of COVID-19 has become a topic of concern for preventing the rebound of possible epidemic. This review describes and defines the COVID-19 asymptomatic carrier state and outlines the methods for identifying, counting and reporting of these cases. ⋯ The author presents the limited available data about the infectivity of asymptomatic and pre-symptomatic cases and their possible contributions to the overall epidemic of COVID-19 observed so far in China. Challenges of a possible second epidemic wave of COVID-19 caused by asymptomatic and pre-symptomatic cases are discussed and suggestions for control strategies and scientific research are provided.
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Zhonghua Liu Xing Bing Xue Za Zhi · May 2020
[Epidemiological characteristics of confirmed COVID-19 cases in Tianjin].
Objective: To investigate the clinical and epidemiological characteristics of 135 confirmed cases of COVID-19 in Tianjin. Methods: The clinical and epidemiological data of 135 cases of COVID-19 in Tianjin were collected, and the data were analyzed with descriptive method. The factors influencing the severity of the illness were analyzed. ⋯ Conclusions: Fever was the main symptom at the early phase of COVID-19 in Tianjin, and the local cluster cases accounted for high proportion in confirmed COVID-19 cases reported in Tianjin. Severe illness was prone to occur in people with old age and multi underlying diseases. Strict isolation of close contacts and intensive care of high-risk groups are the main measures to reduce the morbidity and case fatality of COVID-19.
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Objective: To understand the characteristics of clusters of COVID-19 cases in Tianjin, and provide epidemiological evidence for the prevention and control of COVID-19. Methods: The data of all the COVID-19 cluster cases in Tianjin, reported by 22 February 2020, were collected to analyze the characteristics of different types of the clusters. Results: A total of 115 COVID-19 cases were reported in 33 clusters in Tianjin included 28 family clusters (71 cases), 1 work place cluster (10 cases), 3 transport vehicle clusters (8 cases) and 1 public place cluster (26 cases). ⋯ To prevent the transmission of COVID-19, the close contacts of the patients should be transferred to an assigned observation place on time for single room isolation. The awareness of COVID-19 prevention is low in some rural areas, reflected by many mass gathering activities and delayed medical care seeking after onset. It is necessary to strengthen the health education and take control measures in early period of epidemic.
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Zhonghua Liu Xing Bing Xue Za Zhi · May 2020
[COVID-19 pandemic: global epidemiological trends and China's subsequent preparedness and responses].
The outbreak of COVID-19 has spread quickly across 114 countries/territories/areas in six continents worldwide and has been announced as a pandemic by WHO. This study analyzed global COVID-19 epidemiological trends, examined impact of the pandemic on global health security, diplomacy, and social environment in China, and provided short- and long-term strategic policy recommendations for China's subsequent preparedness and responses.