Objective To establish the rapid purification of Coxsackievirus A16 using ultracentrifugation .And To prepare and i‐dentify the neutralizing monoclonal antibody against CA16 .Methods The CA16 culture supernatant was harvested and then con‐centrated by 100K capsule .The concentration of CA16 was purified by cesium chloride ultracentrifugation .Purification of CA16 were identified by transmission electron microscopy .BALB/c mice were immunized with inactivated CA16 .Spleen cells were harves‐ted and fused with SP2/0 myeloma cells ,hybridoma cell strain secreting mAb against CA16 were objected to screening .Character‐ization of the prepared mAb were analyzed by ELISA and microneutralization assay .Results The purified CA16 method of cesium chloride gradient ultracentrifugation was established ,TEM analysis was showed that CA16 particles have icosahedral structure ,the diameters of the viral particles were approximately 20-30 nm .Two hybridoma cell strains secreting mAb against CA16 were ob‐tained ,the subtypes of two mAbs were IgG2a ,the binding titers of Anti/CA16/5 and Anti/CA16/10 were 103 and 104 respectively . Neutralizing titer of the two mAbs were 1∶256 and 1∶1 024 respectively .Conclusion Establishment method of cesium chloride gradient ultracentrifugation was performed to purify CA16 ,the two mAbs with neutralizing ability to against CA16 may become ap‐plication of treatment and vaccine .

China ; Hemorrhagic Fever with Renal Syndrome ; Humans ; Prevalence ; Vaccination

Objective To analyze the epidemiological characteristics of other-infectious diarrhea (OID) in Shaanxi Province from 2006 to 2015 to further clarify the prevention and control strategies.Methods We collected data from the Infectious Disease Report Information System in China for Disease Prevention and Control and made a statistical description of the epidemiological characteristics of incidence distribution in Shaanxi from 2006 to 2015.Results Totally 207 437 cases of other-infectious diarrhea were reported in Shaanxi Province during 2006 -2015,with the average yearly incidence rate of 52.43/105.The incidence number was higher in males (126 673 cases) than in females (80 764 cases),with male-female ratio of 1.57 ∶ 1.The diseases were most serious in age groups 0-and 1-4 years,accounting for 72.48％.The top-three careers of reported cases were scattered children (74.88 ％),farmers (10.75 ％) and students (5.75 ％),respectively.The cities with the highest incidence in Shaanxi Province were Baoji,Yan'an and Ankang.Two high-incidence seasons were summer (July to August) and winter (November to December).The main pathogen of viral diarrhea was rotavirus,but laboratory-confirmed proportion was low (4.60％).Conclusion Other-infectious diarrhea,especially infection caused by rotavirus in autumn and winter,mainly occurred in children younger than 5 years old.Etiological diagnosis should be strengthened because of the poor laboratory diagnosis reporting rate.

Objective To analyze the massive explosions and burn at Tianjin Port in 2015 resulted in a mass casualty event,and the entire course of response of a hospital to deal with such major sudden accident in order to find a rational strategy for optimal use of medical resources and reduce the critical mortality.Methods This study was done by a retrospective analysis of data from one trauma center at an academic hospital.Data including outcome,triage,severity and pattern of injuries,patient flow,and medical resources used were obtained by the review of hospital records.Results This disaster caused 165 deaths,8 missing contact,and 797 non-fatal casualties.The Pingjin Hospital admitted 298 casualties,and 29 of them were seriously injured referred to by Tianjin Emergency Medical Center.Excessive triage rate made after transfer to another hospital was 62.07% with 11 of the 29 severely injured patients.Maximum (also the first)surge had 147 injured patients arrived around one hour after incident,the second surge had 31 seriously injured patients occurred around 4 hours after incident.Of them,17 patients needed surgery and 17 patients were admitted to the intensive care unit.Conclusions These data showed that the number of casualties in the first surge was substantially larger than predicted and those casualties had less severe trauma,whereas the number of the injured in the second surge was less but the trauma was more severe.In order to maintain the hospital surge capacity,an effective re-triage and a hospital-wide damage control principle can be used to deal with.

Central venous catheters (CVCs) are now widely used in critical care for critical care, fluid resuscitation, drug infusion, parenteral nutrition, hemodynamic monitoring, chemotherapy, and continuous blood purification treatment. Although the application of CVCs can facilitate clinical medical care work, the proportion of patients with various catheter complications will exceed 15%, and the incidence of catheter blockage is about 25%. At present, adequate flushing and effective sealing are considered to be important means to reduce and prevent catheter blockage. This article reviews the prevention of central venous catheter occlusion with different sealing fluids, in order to provide reference for clinical nurses to prevent central venous catheter occlusion.

Objective To explore the characteristics of intestinal Microbiota in T2DM patients by two molecular fingerprint technologies,and investigate the correlation of intestinal microbiota and T2DM,and evaluate the application value of two fin-gerprint technologies.Methods Fecal samples of 8 healthy groups and 7 diabetes patients were collected.Then the total DNA of gut microbiota was extracted.Through the analysis of products by two molecular fingerprints of ERIC-PCR and DGGE-PCR,ecological characteristics of diversity and similarity of gut microbiota were obtained in healthy groups and dia-betes patients.Results Compared to healthy groups,the number of bands and Shannon-Wiener index of gut microbiota in di-abetes patients was decreased but no statistical significance.The similarity in patients group was declining(P <0.05),and the construction of gut microbiota was inclined to differ.Two fingerprint technologies of ERIC and DGGE could directly re-flect the diversity of gut microbiota and were the modern molecular biological techniques without depending on cultivation. ERIC was simple and convenient,had a better reflection of microbial diversity,but gel band cutting and regarded asa proper approach with higher diffraction efficiency and excellent repetition to studysequencing couldn’t be performed since there were more influencing factors on the experiment.DGGE could better reflect the ecological characteristics such as microbial diversity and similarity,and selecting bands,gel band cutting and sequencing could be done.Conclusion The composition and construction of gut microbiota in diabetes patients were changed,which suggests the occurrence of the disease had the correlation with gut microbiota.ERIC and DGGE is regarded as a proper approach with higher diffraction efficiency and ex-cellent repetition to study intestinal microbiota,but also gel band cutting,sequencing,bacteria identification can be performed by DGGE,both can be used in combination.

Objective Explore the sodium citrate anticoagulation in the continuity of plasma adsorption closed-circuit circulation of anticoagulation therapy method and effect. Methods Line into the continuity of plasma adsorption treatment of 156 cases of acute drug poisoning patients were randomly(random number) divided into two groups, 78 cases in each group, respectively adopt low molecular heparin (group A), sodium citrate anticoagulation (group B). Contrast analysis of two groups after the therapy began 30 min, 3 h, 6 h before the filter in patients with pressure, transmembrane pressure, pressure drop, at the same time to compare two groups of 10 min before the start of treatment, after treatment began to 3 h, 6 h platelet, coagulation time live enzymes, vein in the body of free Ca2+, Na+and HCO3- 24 h and internal bleeding. Results Two groups in gender, age, clinical diagnosis, blood purification time comparative differences had no statistical significance (P>0.05);Two groups of 30 min after the start of treatment, 3 h, 6 h patients before pressure, transmembrane pressure, filter pressure drop compared differences were no statistical significance (P>0.05); Part of coagulation treatment after low molecular heparin group live enzymes the sodium citrate group significantly prolonged (P<0.01);Platelets, HCO3- the two groups after treatment, intravenous free Ca2+ and Na+ differences had no statistical significance (P>0.05). Conclusions In the continuous plasma adsorption treatment process using sodium citrate anticoagulation with clinical feasibility, safety.

Objective To sequence the whole genome and to analyze the molecular and evolutionary of Hantavirus(HV) isolated from peripheral blood leukocytes (PBMC) of HFRS patients.Methods PBMC were isolated from peripheral blood of HFRS patients and cocultured with Vero-E6 cells.Quantitative realtime RT-PCR and IFA tests were used to detect virus titer.The genome segments were amplified by PCR with predesigned primers,whole sequence were obtained and further study on its evolution was analyzed.The differences between the isolate strains and Vaccine strain were tested by microneutralization test.Results Two Hantaan virus strains were isolated from PBMC of HFRS patients successfully.The whole genomic fragments were obtained.Molecular phylogenetic analysis result showed that both of the strains had the comparatively high similarity with XAAa10091712 strain.The seroneutralization titer of SX26 and Z10 had significant differences.Conclusion Hantaan virus could be successfully isolated from PBMC of HFRS patients,and it proved to be a feasible way of isolation of hantavirus from peripheral white blood cells;The microneutralization test proved that the antigenicity of two strains exist significant differences.It provided basis for the further study of hantavirus epidemic strains in this region.

Objective:To analyze the epidemiological characteristics and pathogen spectrum of influenza outbreaks in Shaanxi Province from 2014 to 2023 and provide basis reference for strengthening regional influenza prevention and control.Methods:The data were collected from the Public Health Emergency Management Information System of the China Disease Prevention and Control Information System and the China Influenza Surveillance Information System. On-site epidemiological investigation information and etiological test results of influenza network laboratories reported in Shaanxi Province during 2014-2023 were collected, and descriptive analysis was conducted on the time, region, and location distribution of influenza outbreaks. SPSS 25.0 software was used for statistical analysis.Results:A total of 386 influenza outbreaks were reported in Shaanxi from 2014 to 2023, with a total attack rate of 1.81% (14 880/821 001). The epidemic peaks mainly occurred in winter and spring (November to March of the following year), and there was an alternating pattern of epidemic peaks in different years (the early peak was in December, and the late peak was in March of the following year). The epidemic areas were mainly concentrated in the Qinba Mountains of southern Shaanxi (209, 54.15%) and Guanzhong Plain (173, 44.82%). The epidemic places were mainly distributed in primary schools (239, 61.92%), and the differences of epidemic areas and places were statistically significant (all P<0.001). Influenza A(H3N2) viruses were the predominant pathogen in the outbreak (849, 57.76%), and influenza A(H3N2), B (Victoria) lineage and A(H1N1)pdm09 virus alternately dominated the epidemic peak in different years. Conclusions:The peak of influenza outbreaks in Shaanxi Province was winter and spring during 2014-2023. Primary schools in the Qinba Mountains of southern Shaanxi and Guanzhong Plain should be targeted for prevention and control. In the prevention and control programs, close attention should be paid to the changing trend of dominant strains. Effective intervention measures should be targeted to the high-incidence areas and seasons.

Objective?To understand the status quo of the construction of ICU, ICU nursing staff and standardized training, so as to provide evidence for improving the construction of critical care medicine and promoting the development of ICU nursing in China. Methods?In the form of network questionnaire, the director of nursing department or head nurse of each province and city filled in the questionnaire on the current situation of ICU nurses in China in 2016. Results?A total of 1 956 hospitals and 2 747 ICU in 30 provinces and cities of China participated this survey. The number of ICU in He'nan Province was the largest, accounting for 9.87%, and the number of ICU in Class Ⅲ Grade A hospitals accounted for 58.50%. ICU in comprehensive hospitals accounted for 91.99% of the total hospitals. The comprehensive ICU in China accounted for 68.37%. The total number of ICU qualified nurses in different provinces and cities was 70 517. The number of nurses in Guangdong Province was the largest, accounting for 15.58% of the total. The nurses in the Class Ⅲ Grade A hospital accounted for 70.83% of the total. Among them, the proportion of male nurses was 9.05%, and the number of ICU nurses' turnover was 8.61%. 3 504 ICU head nurses were surveyed, the age range was 19.0 to 56.0 years old, the mean age was (38.73±5.38), the professional title was mainly nurse-in-charge, accounting for 62.39%, and the proportion of bachelor's degree head nurses was 82.48%; 4 163 people attended the Chinese Nursing Association ICU Specialty Nursing Certification and 12 022 people attended the provinces/autonomous regions/municipalities directly under the central government specialty nursing certification; after participating the ICU specialty nurse training, 36.21% nurses were going to be the group leader, 27.05% be the teaching managers; the teacher of specialist nurse training were mainly nurse-in-charge, and the proportion of nurse-in-charge was 55.10%.Conclusions?With the continuous development of ICU in China, the construction of ICU nursing staff and the standardized training of ICU specialist still need to be improved.