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Objective:To investigate the epidemic distribution and characteristics of brucellosis in Heze City, and to provide a basis for formulating prevention and control measures in the future.Methods:The data of Heze City brucellosis reported from January 1, 2017 to December 31, 2021, were collected from the China Disease Prevention and Control Information System. The epidemiological case questionnaires of brucellosis in Heze City from January 1, 2017 to December 31, 2021 were collected from the centers for disease control and prevention of various cities, counties and districts. Retrospective analysis was used to conduct a descriptive analysis of the distributions, clinical manifestations and epidemiological history 3 weeks prior to the onset of the disease in Heze City from 2017 to 2021.Results:From 2017 to 2021, a total of 1 543 cases of brucellosis were reported in Heze City, with no death. The highest incidence was in 2018 (5.16/100 000). The peak period was from March to June each year (759 cases). There were cases reported in all counties (districts) of the city, and the counties (districts) with more cases were Mudan District (386 cases), Cao County (271 cases), Yuncheng County (251 cases), Shan County (138 cases) and Juye County (132 cases). The minimum age of onset was 11 months, and the maximum was 84 years old, mainly between the ages of 20 to 69 (1 381 cases). The gender ratio between males and females was 2.50 ∶ 1.00 (1 102 ∶ 441). Farmers had the highest incidence of the disease (1 329 cases). Main clinical manifestations were fever, hyperhidrosis, fatigue, muscle and joint soreness. Epidemiological history investigation within 3 weeks before the onset of the disease revealed 1 124 cases of close contact with animals, including 1 044 cases of contact with sheep.Conclusions:From 2017 to 2021, the incidence of brucellosis in Heze City shows a trend of first rising and then decreasing, and the epidemic affects all counties (districts) of the city, mainly middle-aged and elderly men. In the future, it is necessary to strictly control the flow of diseased animals, increase immunization and quarantine, and block the transmission route.
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Background At present, occupational poisoning has become one of the most serious occupational diseases that jeopardize the health of workers in China, in addition to pneumoconiosis, with a wide range of impacts and heavy social and economic losses. Objective To analyze the characteristics and patterns of the incidence of occupational poisoning in Tianjin from 2006 to 2020, and to provide a scientific basis for the development of effective intervention measures and prevention strategies. Methods The Occupational Diseases and Health Hazards Monitoring Information System, a module of the China Disease Prevention and Control Information System, was the primary data source of the study. The case files of acute and chronic occupational poisoning diagnosed by occupational disease diagnostic institutions in Tianjin from January 1, 2006 to December 31, 2020 were retrieved from the system. The data included basic information, occupational history, disease characteristics, and employer information. Excel 2016 was used to establish database, and frequencies and composition ratios were reported. Results From 2006 to 2020, a total of 234 cases of occupational chemical poisoning were reported in Tianjin, including 49 cases of acute occupational poisoning (20.94%) and 185 cases of chronic occupational poisoning (79.06%). The number of acute occupational poisoning cases showed a rising and then falling trend, and the number of chronic occupational poisoning cases showed an overall decreasing trend. Acute occupational poisoning mainly occurred in the four districts around the city (22 cases, 44.90%), and chronic occupational poisoning mainly occurred in Binhai New Area (90 cases, 48.65%). More male cases were reported than female cases. The age of onset was concentrated at 45-55 years old. The acute occupational poisoning cases were concentrated in the group with less than 5 years of service (22 cases, 44.90%), mainly asphyxiating gas poisoning, and the highest incidence was reported in chemical raw materials and chemical products manufacturing industry. The chronic occupational poisoning cases were concentrated in the groups with a working age of 5-14 years (70 cases, 37.84%), mainly organic solvent poisoning, and the highest incidence was also reported in chemical raw materials and chemical products manufacturing industry. Conclusion The prevention and control of occupational poisoning as well as health surveillance and management in Tianjin shall be carried out in a hierarchical and focused manner in accordance with types of acute and chronic occupational poisoning chemicals in the city, regional economic differences, types of industries, and distribution of workers.
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@#Malaria is an insect-borne disease transmitted by Anopheles mosquitoes or the importation of Plasmodium-infected blood, posing a serious threat to human health and life safety. This study aims to analyze the incidence of malaria in Qingdao at various stages from 1949 to 2021, to collate the control measures taken at different epidemic stages to assess the effectiveness of malaria control, and to identify a set of malaria control strategies suitable for Qingdao, while providing Chinese experience for other countries or cities in their malaria elimination efforts. A retrospective survey was used to collect information on malaria cases, control measures and prevention and control effects in Qingdao from 1949 to 2021, and to evaluate malaria control strategies and measures in Qingdao. 704 155 cases have been reported from 1949 to 2021, with three epidemic peaks: the incidence rate was 1715.9/100 000 in 1961, 1409.7/100 000 in 1965, and the most severe case occurred in 1972, with an incidence rate of 1635.6/100 000 and a case count exceeding 90 000. Throughout the various stages of malaria epidemics, Qingdao has effectively eliminated indigenous malaria by implementing diverse preventive and control measures. Since the last indigenous case of Plasmodium vivax was reported in 2002, all locally reported cases have been imported, mainly by returning migrant workers from Africa. This study examines a range of malaria prevention and control strategies and interventions that are appropriate for Qingdao. These measures have enabled Qingdao to successfully eliminate malaria and maintain malaria-free status for more than 20 years. These measures can also serve as a reference for similarly situated cities in Africa and Southeast Asia.
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@#The incidence rate of vascular dementia is increasing year by year, and there is still no effective treatment at present, so it is very important to reduce the risk of developing vascular dementia. Research shows that diabetes is associated with vascular dementia. Based on the research literature related to diabetes and vascular dementia from January 1995 to April 2023, This article reviews the relationship between diabetes and vascular dementia, pathological mechanism and prevention and control strategies. It is found that diabetes can promote the occurrence and development of vascular dementia by inducing cerebrovascular disease, oxidative stress and inflammatory reaction, using hypoglycemic drugs, removing the incentives of cerebrovascular disease, maintaining the stability of blood-brain barrier and adhering to a healthy lifestyle are the main measures for the prevention and control of vascular dementia at this stage. Future research needs to further explore the mechanism of vascular dementia induced by diabetes, and seek economic and effective prevention targets.
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Quality control is pivotal in the research and development of traditional Chinese medicine, whose connotation is not limi-ted to the qualitative or quantitative detection of an indicator component, but extends to the establishment of a whole process quality control system from the perspective of pharmaceutical product lifecycle management. This study discussed the quality control strategy of Chinese medicine based on the concept of pharmaceutical product lifecycle management, and proposed the following suggestions:(1) to focus on the "holistic view" and "phased" characteristics of quality control and strengthen the establishment of quality control strategy based on top-level design;(2) to strengthen the research on quality control of Chinese medicine based on quality risk management, focus on the correlations of quality control indicators with the safety and effectiveness of traditional Chinese medicine, and establish a quality evaluation system consistent with the characteristics of traditional Chinese medicine;(3) to consider the characteristics of different registration classifications in the establishment of quality control strategy;(4) to highlight the quality correlation research, strengthen the quality transfer research, ensure the quality traceability, and establish a sound quality management system;(5) to strengthen the quality research on marketed drugs to achieve dynamic quality improvement.
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Medicine, Chinese Traditional , Drugs, Chinese Herbal/therapeutic use , Quality ControlABSTRACT
Objective: To explore the present situation and epidemiological characteristics of pesticide poisoning in Chengdu City from 2012 to 2021, and to provide scientific evidence for further prevention and control. Methods: In January 2022, the pesticide poisoning report cards of Chengdu City from 2012 to 2021 were collected from the China Disease Control and Prevention Information System. The data of the report card was reorganized and the distribution characteristics of pesticide poisoning such as time, region, gender, age and pesticide types were analyzed. Results: 14326 cases of pesticide poisoning were reported in Chengdu City from 2012 to 2021, 651 deaths, and the fatality rate was 4.54%. The cases of productive pesticide poisoning and unproductive pesticide poisoning were 504 and 13822, respectively. The fatality rates of productive and unproductive pesticide poisoning were 1.39% and 4.66%, which were significant different (χ(2)=11.99, P=0.001). The highest reported cases of pesticide poisoning was in 2013 (1779) and the lowest in 2021 (1047). The number of reported cases showed a downward trend year by year (t=-12.30, P<0.001), and the fatality rates also showed a downward trend year by year (χ(2)(trend)=25.48, P<0.001). The fluctuation range of unproductive pesticide poisoning cases in each month of the year was small, and the productive pesticide poisoning mainly occurred from May to August. The regions with the largest number of reported poisoning cases were Pengzhou (1620), Jianyang (1393), Jintang (1266) and Qionglai (1158). The high incidence of poisoning was among 25-54 years old (50.21%, 7193/14326). The fatality rate in the age group 75-96 years old was the highest (8.98%, 95/1058), and the fatality rates increased gradually with age (χ(2)(trend)=186.03, P<0.001). The pesticides causing poisoning were mainly insecticide (43.86%, 6284/14326) and herbicides (35.75%, 5121/14326). Herbicides paraquat had the highest fatality rate (9.54%, 286/2998) . Conclusion: Pesticide poisoning in Chengdu City is mainly unproductive poisoning. Health education should be carried out for key areas and people, and the control of highly toxic pesticides such as insecticide and herbicides should be strengthened.
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Humans , Aged , Aged, 80 and over , Adult , Middle Aged , Insecticides , Pesticides , Herbicides , Paraquat , Cities , Poisoning/epidemiologyABSTRACT
ObjectiveTo analyze the epidemic intensity and characteristics of influenza in Changzhou City， Jiangsu Province from 2019 to 2023， and to provide scientific evidence for the formulation of influenza prevention and control strategies. MethodsThe surveillance data of influenza surveillance sentinel hospitals in Changzhou City from April 2019 to March 2023 were collected through the China influenza surveillance information system. Influenza-like illness （ILI） cases before and after the pandemic of COVID-19 in Changzhou City were analyzed， and the differences among qualitative data were compared by using χ² test. ResultsFrom April 2019 to March 2023 the percentages of ILI cases’ medical visits in the four-influenza surveillance year were 2.57%， 1.84%， 5.38%， and 3.66%， respectively， and the positive detection rates of influenza virus were 25.71%， 0.44%， 22.78%， and 24.32%， respectively. The number of influenza outbreaks was 61， 1， 23， and 128， respectively. ILI cases were mainly among adolescent children aged 5‒14 years. The percentage of ILI cases in 2020‒2021 after the pandemic of COVID-19 was significantly lower than that in 2019‒2020 （χ2=737.342， P<0.001）， and the percentage of ILI cases in 2021‒2023 was higher than that in 2019‒2020. Influenza viruses in 2019‒2021 were dominated by type B Victoria， and influenza A virus was the dominant strain in positive influenza virus detections in 2022‒2023. The number of influenza outbreaks in 2021‒2023 was significantly lower than that in 2019‒2020 （χ2=185.662， P<0.001）. ConclusionThe epidemiological characteristics of influenza are different in different stages of COVID-19 prevention and control during 2019‒2023. In the dynamic clearance phase of COVID-19， ILI case’s medical visits showed low-level fluctuations without obvious seasonal fluctuations， and influenza virus was dominated by type B. In the high-intensity phase of the pandemic， the level of ILI case’s medical visits has reached the peak of the calendar year， and the positive detection of influenza virus was dominated by type A H3N2. In the "Category B B control" phase， the level of ILI case’s medical visits increased after a rapid decline， and the positive detection of influenza virus was dominated by type A H1N1. It is necessary to further strengthen the monitoring of influenza cases， pay close attention to the changes in influenza strains， actively promote influenza vaccination for key population group， and promote health behavior changes for the whole population.
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Visceral leishmaniasis is a parasitic disease transmitted by Phlebotomus chinensis that poses a great threat to human health. Historically, visceral leishmaniasis was predominantly prevalent in northwestern regions of Sichuan Province. Following the founding of the People’s Republic of China, large-scale integrated interventions had been implemented in visceral leishmaniasis-endemic areas of Sichuan Province, including identification and treatment of visceral leishmaniasis patients, elimination of infected dogs, Ph. chinensis control and health education. This review summarizes the prevalence of visceral leishmaniasis, discusses the control strategy of visceral leishmaniasis and analyzes the challenges of elimination of visceral leishmaniasis based on the One Health concept in Sichuan Province, so as to provide insights into elimination of visceral leishmaniasis in the province.
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Plague natural foci in Gansu Province are large in area and widely distributed, and the epidemic status is different in each focus. Some plague natural foci have been resting for many years and are under stable control. In other plague natural foci, the epidemic of plague among animals is relatively active, and dozens of strains of Yersinia pestis can be isolated every year. The plague among animals spreads to the humans from time to time, and the cases of human plague are more severe, short in course of disease, and high in mortality. In recent years, with the sharp increase of migrant workers engaged in grazing and engineering construction in plague natural foci, opportunities to actively contact infected animals such as marmots, hares and sheepdogs have increased, resulting in an increase of human plague cases. In addition, the behaviors of illegal hunting, trafficking and sale of marmots cannot be stopped, resulting in human plague throughout the year. Therefore, the party committees and governments at all levels and the health administrative departments in Gansu Province have formulated the plague prevention and control measures suitable for this region according to the epidemic characteristics of plague among animals and humans. In this paper, the characteristics of plague epidemic situation at present and the prevention and control measures adopted in Gansu Province are discussed, in order to provide scientific basis and guidance for optimizing plague prevention and control measures in the future.
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ObjectiveTo assess the effects of countermeasures against coronavirus disease 2019 （COVID-19） in Shanghai from March to May 2022 in comparison with epidemiological trend of COVID-19 in New York City. MethodsDaily confirmed cases， asymptomatic SARS-CoV-2 carriers， and daily deaths were obtained in the Shanghai Municipal Health Commission and the Center for Disease Control and Prevention （CDC） of the United States. Descriptive study was conducted by using these data. ResultsFrom March 1 to May 17， the number of daily asymptomatic SARS-CoV-2 infections in Shanghai was up to 58 times as large as that of daily confirmed cases； however， the number of daily confirmed cases in Shanghai was generally less than that in New York in the same time period. At the peak of the COVID-19 epidemic， the growth of daily attack rate in Shanghai was significantly lower than that in New York （P<0.05）. Moreover， the number of daily death was evidently less than that in New York. In addition， the vaccination rate in the elderly （aged ≥60 years） in Shanghai was evidently lower than that in New York （aged ≥65 years）. ConclusionThe COVID-19 epidemics in Shanghai from March to May 2022 and in New York after December 2021 were both caused by the Omicron variant. Compared with the Delta variant， the Omicron variant has stronger replication ability and infectivity， resulting in challenges to the containment of the epidemic in metropolis such as Shanghai and New York City. The epidemic in New York City remained crucial due to absence of effective countermeasures， while that in Shanghai has been effectively contained with strict countermeasures. The prevention and control strategies may be adjusted along with the continual evolution of SARS-CoV-2 and increasing trend of imported COVID-19 cases.
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Abstract@#Since May 2022, laboratory-confirmed cases of monkeypox have been reported in more than 40 non-endemic countries and the epidemic may spread to other countries through human-to-human transmission. This study aims to introduce the characteristics of monkeypox virus and analyze the epidemic situation and the risk of imported cases in Zhejiang Province. Multiple recommendations are proposed to prevent monkeypox epidemics in Zhejiang Province including strengthening entry personnel quarantine, establishing monkeypox monitoring system, carrying out monkeypox-related health education, and making risk assessment and preparation.
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Schistosomiasis is a parasitic disease that seriously hinders socioeconomic developments and threatens public health security. To achieve the global elimination of schistosomiasis as a public health problem by 2030, WHO released the guideline on control and elimination of human schistosomiasis on February, 2022, with aims to provide evidence-based recommendations for schistosomiasis morbidity control, elimination of schistosomiasis as a public health problem, and ultimate interruption of schistosomiasis transmission in disease-endemic countries. Following concerted efforts for decades, great achievements have been obtained for schistosomiasis control in China where the disease was historically highly prevalent, and the country is moving towards schistosomiasis elimination. This article reviews the successful experiences from the national schistosmiasis control program in China, and summarizes their contributions to the formulation and implementation of the WHO guideline on control and elimination of human schistosomiasis. With the progress of the "Belt and Road" initiative, the world is looking forward to more China's solutions on schistosomiasis control.
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Humans , China/epidemiology , Disease Eradication , Public Health , Schistosomiasis/prevention & control , World Health OrganizationABSTRACT
Objective @#To analyze the problems in the AIDS control strategy in key areas of Zhejiang Province, so as to provide insights into the improvement of the control strategy.@*Methods @#The AIDS control data were collected from 10 key counties (districts) in Zhejiang Province, and the AIDS control strategy was comprehensively evaluated using a SWOT analysis.@*Results @#The strengths of the AIDS control strategy in key counties (districts) of Zhejiang Province included distinct working objectives, well-organized leadership, and effective control measures, the weaknesses included large number of HIV-infected cases, high burden of disease, difficulty in management of AIDS transmission and insufficient AIDS control capability, and the opportunities included the AIDS control in key counties (districts) conforming to the current status of AIDS control, strong support of innovative strategies and technical support from professional teams, while the threats included insufficient working mechanisms for AIDS control, the gap between the effectiveness of AIDS control and the target goal and unverified scientific evidence of the control strategy. Supported policies should be fully used, working mechanisms need to be improved, control strategies need to be innovated, and assessments need to be implemented for AIDS control in key counties (districts). @*Conclusions @#There are both opportunities and challenges for AIDS control in key counties (districts) of Zhejiang Province. Optimization of the working mechanisms, promotion of precision interventions, and search for repeatable control strategy in other disease-affected regions are required for AIDS control.
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Since 2015 when the transmission of schistosomiasis was controlled in China, the country has been moving towards elimination of schistosomiasis, with the surveillance-response as the main interventions for schistosomiasis control. During the period of the 13th Five-Year Plan, the transmission of schistosomiasis had been interrupted in four provinces of Sichuan, Jiangsu, Yunnan and Hubei and the prevalence of schistosomiasis has been at the historically lowest level in China. As a consequence, the goal set in The 13th Five-Year National Schistosomiasis Control Program in China is almost achieved. However, there are multiple challenges during the stage moving towards elimination of schistosomiasis in China, including the widespread distribution of intermediate host snails and complicated snail habitats, many types of sources of Schistosoma japonicum infections and difficulty in management of bovines and sheep, unmet requirements for the current schistosomiasis control program with the currently available tools, and vulnerable control achievements. During the 14th Five-Year period, it is crucial to consolidate the schistosomiasis control achievements and gradually solve the above difficulties, and critical to provide the basis for achieving the ultimate goal of elimination of schistosomiasis in China. Based on the past experiences from the national schistosomiasis control program and the challenges for schistosomiasis elimination in China, an expert consensus has been reached pertaining to the objectives, control strategy and measures for The 14th Five-Year National Schistosomiasis Control Program in China, so as to provide insights in to the development of The 14th Five-Year National Schistosomiasis Control Program in China.
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【Objective】 To analyze the infection status of syphilis among voluntary blood donors in Nanyang area, aimed to provide references for the recruitment of blood donors and ensure blood safety. 【Methods】 Enzyme-linked immunosorbend test(ELISA method) was used to screen the blood samples of 45 6981 voluntary blood donors from 2013 to December 2020, and the reactive blood samples of TP antibody were confirmed by treponema pallidum particle agglutinaation(TPPA method), the syphilis infection status in different population was compared and analyzed. 【Results】 Among 456 981 blood samples, 1 088 were reactive for anti-TP by ELISA method, and 714 were positive for syphilis(714/456 981, 0.15%); the total positive rate and positive rate of male and female in voluntary blood donors decreased year by year; female donors(347/180 987, 0.192%), first-time donors(613/324 188, 0.189%), whole blood donors(708/433 432, 0.163%) and married donors(668/399 899, 0.167%) had a significantly higher syphilis seroprevalence than male donors(367/275 994, 0.133%), repeated donors(101/132 793, 0.076%), apheresis platelet donors(6/23 549, 0.025%) and unmarried donors(46/57 082, 0.080%), respectively, and the differences between two groups were statistically significant (P<0.05); the positive rate in donors with junior high school and below was significantly higher than other groups; the positive rate in donors of 35~44 years old was higher than other age groups, with statistically significant difference(P<0.05); syphilis seroprevalence among different occupational groups was statistically significant (P<0.05); Among 714 donors, co-infection with other viruses were noted in 40 cases(40/714, 5.60%), and only TP infection in 674 cases(674/714, 94.40%). 【Conclusion】 The TP seroprevalence among voluntary blood donors in Nanyang area showed a downward trend from 2013 to 2020, the majority of TP seropositive population are first-time donors, married donors, whole blood donors, donors with lower academic qualifications, and farmers/individual donors. Strengthening the consultation towards high-risk blood donors before blood donation, and recruitment of blood donors from low-risk groups can reduce / avoid the transmission of syphilis through blood transfusion and ensure the safety of blood transfusion.
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As a successful example of global public health, Chinese schistosomiasis control technology and experiences have been included in global public health governance. Chinese schistosomiasis control program progresses with China’s international discourse power. During the period from the initial stage of the founding of the People’s Republic of China to China’s Reform and opening-up, the national schistosomiasis control program of China achieved great successes through mobilizing multi-sectorial resources under the policy of Independence and Self-reliance. Following China’s Reform and opening-up, all advantageous opportunities were captured to solve problems pertaining to schistosomiasis control in the context of complex international situations. As a consequence, transmission control of schistosomiasis was achieved across China in 2015. Since the Eighteenth National Congress of the Communist Party of China, China has contributed the discourse system with distinct Chinese characteristics to the world, and has actively participated in health cooperation projects between China and other “Belt and Road” countries, which has contributed China’s wisdom to global schistosomiasis control program and conveyed China’s voice to the world.
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This study introduces the current status of the coronavirus disease 2019 （COVID-19） epidemic， the adjustment of response initiatives， and the global variation of novel coronaviruses and vaccination in Europe， the United States， Japan， and Singapore. It summarizes the achievements in prevention and control efforts in China during COVID-19 epidemic. In addition， it describes the key public health issues in Chinese response strategy that includes： promoting the establishment of a population immunization system； optimizing health certification by unifying health codes， trip codes， and vaccine passes as a triple-identification at the national level； retaining nucleic acid testing as a technical means of detecting the source of infection and epidemiological investigation of close contacts； adhering to the requirements of public places， public transportation and other measures such as wearing masks； strengthening the surveillance of COVID-19 and respiratory infectious diseases； normalizing the timing of implementation of prevention and control strategies.
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This study introduces the current status of the coronavirus disease 2019 （COVID-19） epidemic， the adjustment of response initiatives， and the global variation of novel coronaviruses and vaccination in Europe， the United States， Japan， and Singapore. It summarizes the achievements in prevention and control efforts in China during COVID-19 epidemic. In addition， it describes the key public health issues in Chinese response strategy that includes： promoting the establishment of a population immunization system； optimizing health certification by unifying health codes， trip codes， and vaccine passes as a triple-identification at the national level； retaining nucleic acid testing as a technical means of detecting the source of infection and epidemiological investigation of close contacts； adhering to the requirements of public places， public transportation and other measures such as wearing masks； strengthening the surveillance of COVID-19 and respiratory infectious diseases； normalizing the timing of implementation of prevention and control strategies.
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Recent studies showed that certain drugs can change regulatory reaction parameters in gene regulatory networks (GRNs) and therefore restore pathological cells to a normal state. A state control framework for regulating biological networks has been built based on attractors and bifurcation theory to analyze this phenomenon. However, the control signal is self-developed in this framework, of which the parameter perturbation method can only calculate the state transition time of cells with single control variable. Therefore, an optimal control method based on the dynamic optimization algorithms is proposed for complex biological networks modeled by nonlinear ordinary differential equations (ODEs). In this approach, dynamic optimization problems are constructed based on basic characteristics of the biological networks. Furthermore, using an example of a simple low-dimensional three-node GRN and a complex high-dimensional cancer GRN, MATLAB is utilized to calculate optimal control strategies with either single or multiple control variables. This method aims to achieve accurate and rapid state regulation for biological networks, which can provide a reference for experimental researches and medical treatment.
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The new coronavirus pneumonia has been listed as one of the Class B infectious disease but is managed as Class A infectious disease. To prevent and control its spread in hospitals, the outpatient department is the first key gate. Based on the relevant diagnosis and treatment strategies of the National Health Commission of the People's Republic of China, combined with the actual situation of the hospital's epidemic prevention and control work, this article formulated comprehensive prevention and control strategies from the perspective of the patients and staffs. From the aspects of organization and leadership, medical epidemic prevention, pre-screening and screening, process formulation, admission management, cleaning and disinfection, epidemic report, prevention and control supervision, personnel and material deployment, patient education, comprehensive management, personnel management and psychological support and so on, advice and guidance on prevention and control of this infectious disease in outpatient department of hospital were provided.