A Brief Talk on How to Promote China Health and Quarantine at Points of Entry in the Framework of Global Health

Global health concerns about the health of the global population and the concepts of global health are gradually being accepted by all of the countries in the world.China health and quarantine at points of entry(POEs) is an integral part of global health,and its duty of prevention and control of the communicable diseases in POEs is consistent with the duty of global health to promote the health of global population.Under the principle of "prevention first",health and quarantine organ carries out the work of disease prevention and control and international travel health care,the reinforcement of core capacity at POEs,and focuses on human rights protection.All the same,there are some gaps with the requirements of global health,such as the inadequate of health promotion planning capacity,ethics awareness and legal protection.The future work of health and quarantine should change ideas on communicable diseases prevention at POEs,focus more on ethical consideration,and should optimize system architecture and human resources,strengthen cooperation,maintain core capacity at POEs,thus to build points of entry public health system with Chinese characteristics,meanwhile to apply the concepts of global health deeply into every aspects of health and quarantine at POEs.

HIV,HCV,and HBV Co-Infections in a Rural Area of Shanxi Province with a History of Commercial Blood Donation

Background： Unhygienic blood collection in the early 1990s led to blood-borne infections in Central China. This study aimed to estimate human immunodeficiency virus （HIV） co-infection with hepatitis C and B viruses （HCV and HBV） and their risk factors in a rural area of Shanxi Province with a history of commercial blood donation. Methods： A cross-sectional study was conducted in 2004. All adult residents in the target area were invited to participate in the study. Face-to-face interviews were completed and blood specimens were tested for HIV, HCV, and HBV surface antigen （HBsAg）. Results： Prevalence rates of HIV, HCV, and HBsAg were 1.3% （40/3 062）, 12.7% （389/3 062）, and 3.5% （103/2982）, respectively. Of the 40 HIV-positive specimens, 85% were HCV positive and 2.5% were HBsAg positive. The history of commercial blood donation was positively associated with HIV, HCV, and HIV/HCV co-infections, but was negatively associated with HBsAg seropositivity. Migration for employment in the last 5 years was positively related to HIV, HBsAg, and HIV/HCV co-infections. Univariate logistic analysis showed that illegal drug use, number of sex partners, extramarital sex behavior, commercial sex behavior, and condom use rate were not related to anti-HIV, anti-HCV, HBsAg seropositivity or their co-infections. Conclusion： The history of commercial blood donation was the main risk factor for HIV, HCV, and HIV/HCV co-infections in this former commercial blood donation area. HIV and HCV prevention and treatment interventions are important in this area.

Symptomatic and Asymptomatic SARS-CoV-2 Infection and Follow-up of Neutralizing Antibody Levels

Objective To investigate neutralizing antibody levels in symptomatic and asymptomatic patients with coronavirus disease 2019(COVID-19)at 6 and 10 months after disease onset.Methods Blood samples were collected at three different time points from 27 asymptomatic individuals and 69 symptomatic patients infected with severe acute respiratory syndrome coronavirus 2(SARS-Co V-2).Virus-neutralizing antibody titers against SARS-CoV-2 in both groups were measured and statistically analyzed.Results The symptomatic and asymptomatic groups had higher neutralizing antibodies at 3 months and 1–2 months post polymerase chain reaction confirmation,respectively.However,neutralizing antibodies in both groups dropped significantly to lower levels at 6 months post-PCR confirmation.Conclusion Continued monitoring of symptomatic and asymptomatic individuals with COVID-19 is key to controlling the infection.

Nutrients Deficiency and Excess Phenomena of Cut Rose and Their Physiological Significances

On the basis of a brief introduction of essential major dements and trace dements for cut rose, the physiological effect and deficiency and excess phenomena of major elements including nitrogen, phosphorus, potassium, magnesium, calcium, sulfur and trace dements including zinc, molybdenum, boron, iron, manganese, copper were mainly described; the main factors influencing nutrients absorption of cut rose were summarized, in order to provide a reference for the reasonable fertilization of cut rese.

Study on the interaction between polymorphisms of FOXO3A gene and environmental factors in longevity at Bama county,Guangxi province

Objective: To study the interaction between the polymorphisms of FOXO3A and the environmental factors in the longevity district of Bama county.Methods: Using Taqmaq probe,genotyping of FOXO3A gene was performed for 200 longevous elderly(aged 90-110)and 288 healthy controls(aged 48-89).The interaction between the polymorphisms of gene and environmental factors were analyzed by using conditional logistic regression.Results: Minor allele frequencies(MAF)of five known SNPs in FOXO3A gene were higher in cases than in controls(P<0.05).There was a positive interction between minority alleles of rs2764264 in FOXO3A gene and the environment factors in the longevity district(OR=11.08,γ=1.075).Conclusion: Five SNPs of FOXO3A gene would be closely correlated with human longevity in Bama.The interaction between the polymorphisms of FOXO3A genes rs2764264 and the environment factors in the longevity district had synergy to longevity.The longevity phenomenon in Bama probably was the result of the interaction between gene and environmental factors.

The prevalence of HBsAg in Elderly Hui Ethnicities residents In Ningxia

Objective:To explore the prevalence of HBsAg in Hui ethnicities aged 55 years and older. Methods:Blood serum HBsAg biomarker was examined by immune colloidal gold dipstick for 6582 Hui ethnicities, descriptive analysis applied to explore the distribution of prevalence of HBsAg.Results: Total of 372 subjects were positive of HBsAg with a prevalence of 4.68%;There were no significant differences between male and female for prevalence of HBsAg, however, an significant differences was detected among age groups,and the differences age group in older women. ALT and AST level higher in HBsAg positive group than those HBsAg negative subjects.Conclusions: The Hui elderly had a relatively lower prevalence of HBsAg than general population, further study needed to explore possible factors contribute to the low prevalence.

Pulmonary embolism excluded acute coronary syndrome by coronarography： a retrospective analysis

Background Pulmonary embolism （PE） is often mistaken as acute coronary syndromes （ACS） because of the considerable overlap in their clinical features. We evaluated the factors causing misdiagnosis of PE as ACS and factors that differentiate PE from ACS to improve the diagnosis efficacy of PE. Methods The medical records of 22 consecutive PE patients, between 2001 and 2010, who were initially suspected of ACS were retrieved. ACS was ruled out by coronary artery angiography before a definite diagnosis of PE was given. Twenty-two contemporary cases of ACS matched by age and sex were recruited as controls. Clinical manifestations, electrocardiograms （ECG）, and biomarkers of these patients were reviewed retrospectively. The factors causing misdiagnosis of PE as ACS and factors differentiating PE from ACS were evaluated. Results We found two leading causes of misdiagnosis of PE as ACS. One is that PE can resemble ACS in several clinical aspects （symptoms and signs, ECG findings, plasma cardiac troponin I, and D-dimer）. The other is the insufficient recognition of PE by clinicians. Risk factors for venous thromboemboiism （VTE）, especially deep venous thrombosis （DVT）, together with signs of PE, such as unexplained dyspnea or hypoxemia, and right ventricular pressure overload on ECGs are valuable in differentiating the two diseases. Conclusions Differentiation between PE and ACS is sometimes challenging. Adequate awareness of the risk factors for VTE and the signs of PE are crucial in the diagnosis of PE.

氢氧化钠溶液吸收硫酰氟的传质反应动力学（英文）

研究目的:确定氢氧化钠溶液化学吸收硫酰氟的传质反应动力学区域,建立增强因子模型。研究方法:研究气液传质测定设备双搅拌釜中氢氧化钠溶液化学吸收硫酰氟的过程,并结合实验研究与理论分析建立了增强因子模型。重要结论:基于氢氧化钠溶液化学吸收硫酰氟过程的实验研究,确定了氢氧化钠溶液化学吸收硫酰氟的传质反应动力学区域为快速拟一级反应。得到了298 K下其二级反应速率常数为1.44 m3/(mol·s),并建立了增强因子模型E=68.08CBL1/2,为脱除熏蒸后残留硫酰氟的工业化应用提供了理论依据。