1.Characteristics of imported malaria cases in Yiwu City from 2015 to 2024
ZHU Liebo ; YE Zhen ; FENG Xiayan ; JIANG Jun
Journal of Preventive Medicine 2026;38(4):406-409
Objective:
To analyze the characteristics of imported malaria and vector surveillance in Yiwu City, Zhejiang Province from 2015 to 2024, so as to provide the evidence for formulating malaria surveillance, early warning, and control strategies.
Methods:
Data on imported malaria cases in Yiwu City from 2015 to 2024 were collected through the Infectious Disease Reporting Information Management System and the Parasitic Disease Prevention and Control Information Management System of the China Disease Prevention and Control Information System. Descriptive analyses were conducted on the temporal distribution, population distribution, import sources, and diagnosis and treatment status of malaria cases. From 2015 to 2021, the light trap method and human-baited net trap method were used to monitor adult mosquitoes during the active mosquito season. From 2022 to 2024, the light trap method was used to monitor adult mosquitoes during both the active mosquito season and the peak period of case reporting. Mosquito genera were identified based on morphological characteristics.
Results:
A total of 266 imported malaria cases were reported in Yiwu City from 2015 to 2024, all of which were laboratory-confirmed. Plasmodium falciparum infection was predominant, accounting for 240 cases (90.23%). The number of reported malaria cases was relatively high from July to November, with 137 cases (51.50%). The majority of cases were males and aged 30-<50 years, accounting for 224 cases (84.21%) and 188 cases (70.68%), respectively. There were 191 foreign cases, among whom 184 (96.34%) were commercial service personnel. Among the 75 Chinese cases, 60 were commercial service personnel and 11 were overseas workers. The main source of cases was Africa, accounting for 225 cases (84.59%). County-level hospitals were the primary first-visit institutions, accounting for 181 cases (68.05%). The misdiagnosis rate was relatively high in township and lower-level medical institutions, ranging from 71.43% to 100.00%. The predominant clinical symptom was fever, present in 183 cases (68.80%). Concurrent presentation of three clinical symptoms was observed in 93 cases, and two symptoms in 48 cases. Asymptomatic infection was noted in 79 cases. From 2015 to 2021, a total of 617 Anopheles mosquitoes were captured, all identified as Anopheles sinensis, primarily in livestock farming areas. From 2022 to 2024, only one Anopheles sinensis mosquito was captured.
Conclusions
From 2015 to 2024, imported malaria in Yiwu City was predominantly Plasmodium falciparum malaria, showing seasonal clustering. Cases mainly originated from Africa, with the majority being male, young and middle-aged adults, and commercial service personnel. Insufficient first-visit diagnostic capacity at primary healthcare institutions was a weak link in prevention and control, whereas the risk of local re-transmission remained low.
2.Prognostic value of pretreatment peripheral blood hemoglobin×lymphocyte/monocyte ratio in patients with nasopharyngeal carcinoma.
Chao DENG ; Zui CHEN ; Jie LING ; Yangchun XIE ; Xiayan ZHAO ; Chunhong HU ; Xianling LIU ; Yuhua FENG ; Tao HOU
Journal of Central South University(Medical Sciences) 2024;49(12):1909-1918
OBJECTIVES:
Peripheral whole blood cell counts have been used as prognostic indicators for various cancers, but their predictive value in nasopharyngeal carcinoma remain unclear. This study aims to evaluate the prognostic significance of the pretreatment hemoglobin×lymphocyte/monocyte ratio (HLMR) in non-recurrent, non-metastatic NPC patients undergoing definitive radiotherapy.
METHODS:
Clinical and follow-up data from 805 NPC patients who completed definitive radiotherapy or chemoradiotherapy were retrospectively analyzed. Pretreatment hemoglobin, lymphocyte count, and monocyte count were collected to calculate HLMR. Receiver operating characteristic (ROC) curves were used to determine the optimal cut-off value of HLMR. Patients were then classified into high and low HLMR groups. The association between HLMR and clinicopathological characteristic was assessed using chi-square tests. Independent prognostic factors for overall survival (OS) and progression-free survival (PFS) were identified using Cox proportional hazards models. A nomogram was constructed based on the independent predictors to estimate patient survival rates, and internal validation was performed using a validation cohort.
RESULTS:
The ROC curve identified 605.5 as the optimal HLMR cut-off value for predicting 5-year survival. Multivariate Cox regression analysis revealed that T stage (HR=1.886, 95% CI 1.331 to 2.673, P<0.001), N stage (HR=2.021, 95% CI 1.267 to 3.225, P=0.003), Eastern Cooperative Oncology Group (ECOG) score (HR=3.991, 95% CI 1.257 to 12.677, P=0.019), concurrent chemoradiotherapy regimen (HR=0.338, 95% CI 0.156 to 0.731, P=0.006), and HLMR (HR=0.648, 95% CI 0.460 to 0.912, P=0.013) were independent prognostic factors for OS. A nomogram including T stage, N stage, and HLMR in the training cohort was constructed to predict 3-, 5-, and 7-year OS, with a C-index of 0.713. The area under the curves for predicting 3-, 5-, and 7-year OS were 0.744, 0.665, and 0.682, respectively. Calibration curves showed good agreement between predicted and observed survival rates. The above results were further confirmed in the validation cohort.
CONCLUSIONS
Pretreatment HLMR may serve as a promising prognostic biomarker for patients with nasopharyngeal carcinoma.
Humans
;
Nasopharyngeal Carcinoma/mortality*
;
Prognosis
;
Hemoglobins/analysis*
;
Nasopharyngeal Neoplasms/pathology*
;
Monocytes/cytology*
;
Female
;
Male
;
Retrospective Studies
;
Middle Aged
;
Adult
;
Aged
;
Nomograms
;
Chemoradiotherapy
;
ROC Curve
3.The Diet, ExerCIse and CarDiovascular hEalth (DECIDE)-Diet study was taken as a case to discuss the methods of blinding and blinding assessment for feeding trials
Xiayan CHEN ; Yanfang WANG ; Yangfeng WU ; Shuyi LI ; Yanfang ZHAO ; Ke MIAO ; Lin FENG ; Huijuan LI
Chinese Journal of Clinical Nutrition 2022;30(1):49-52
DECIDE-Diet trial was taken as a case to introduce the methods of blinding and blinding assessment for feeding trials, report the details of blinding, conduct a blinding survey and calculate Jame's BI and Bang's BI. Jame's BI was 0.683 (95% CI: 0.593~0.772). The Bang's BI for the intervention group was 0.340 (95% CI: 0.199~0.481), and for the control group was 0.086 (95% CI: -0.060~0.231). The blinding of the DECIDE)-Diet was generally successful, but the intervention group may infer their group to a certain extent. Feeding trials should report the details of blinding and consider blinding assessment.
4.Perceptions of a night float system for intern doctors in an internal medicine program: an Asian perspective
Benjamin Yong Qiang TAN ; Nicholas Jinghao NGIAM ; Zi Yun CHANG ; Sandra Ming Yien TAN ; Xiayan SHEN ; Shao Feng MOK ; Srinivas SUBRAMANIAN ; Shirley Beng Suat OOI ; Adrian Chin Leong KEE
Korean Journal of Medical Education 2019;31(3):271-276
Long duty hours have been associated with significant medical errors, adverse events, and physician “burn-outâ€. An innovative night float (NF) system has been implemented in our internal medicine program to reduce the negative effects of long duty hours associated with conventional full-call systems. However, concerns remain if this would result in inadequate training for interns. We developed a structured questionnaire to assess junior doctors’ perceptions of the NF system compared to full calls, in areas of patient safety, medical training, and well-being. Ninety-seven (71%) of the 137 doctors polled responded. Ninety-one (94%) felt the NF system was superior to the full call system. A strong majority felt NF was beneficial for patient safety compared to full call (94% vs. 2%, p<0.001). The NF system was also perceived to reduce medical errors (94% vs. 2%, p<0.001) and reduce physician “burn-out†(95% vs. 5%, p<0.001). Beyond being a practical solution to duty-hour limitations, there was a significant perceived benefit of the NF system compared to the full call in terms of overall satisfaction, patient safety, reducing medical errors and physician “burn-outâ€.
5.Perceptions of a night float system for intern doctors in an internal medicine program: an Asian perspective
Benjamin Yong Qiang TAN ; Nicholas Jinghao NGIAM ; Zi Yun CHANG ; Sandra Ming Yien TAN ; Xiayan SHEN ; Shao Feng MOK ; Srinivas SUBRAMANIAN ; Shirley Beng Suat OOI ; Adrian Chin Leong KEE
Korean Journal of Medical Education 2019;31(3):271-276
Long duty hours have been associated with significant medical errors, adverse events, and physician “burn-out”. An innovative night float (NF) system has been implemented in our internal medicine program to reduce the negative effects of long duty hours associated with conventional full-call systems. However, concerns remain if this would result in inadequate training for interns. We developed a structured questionnaire to assess junior doctors’ perceptions of the NF system compared to full calls, in areas of patient safety, medical training, and well-being. Ninety-seven (71%) of the 137 doctors polled responded. Ninety-one (94%) felt the NF system was superior to the full call system. A strong majority felt NF was beneficial for patient safety compared to full call (94% vs. 2%, p<0.001). The NF system was also perceived to reduce medical errors (94% vs. 2%, p<0.001) and reduce physician “burn-out” (95% vs. 5%, p<0.001). Beyond being a practical solution to duty-hour limitations, there was a significant perceived benefit of the NF system compared to the full call in terms of overall satisfaction, patient safety, reducing medical errors and physician “burn-out”.
After-Hours Care
;
Asian Continental Ancestry Group
;
Education, Medical
;
Humans
;
Internal Medicine
;
Medical Errors
;
Patient Safety
;
Patient Satisfaction
6.Meta-analysis of HIV infection incidence and risk factors among men who have sex with men in China.
Yibing FENG ; Kai BU ; Meng LI ; Xiayan ZHANG ; Shanshan JIN ; Lu WANG ; Email: WANGLU64@163.COM.
Chinese Journal of Epidemiology 2015;36(7):752-758
OBJECTIVETo understand the incidence of HIV infection among men who have sex with men (MSM) in China.
METHODSMeta-analysis was performed to systematically and quantitatively review all the original research papers and reports published during 2010-2015 on the incidence of HIV infection among MSM in China. Pooled incidence, pooled hazard ratios, publication bias, heterogeneity and sensitivity analysis for those studies were calculated or analyzed by using Stata 12.0 software.
RESULTSA total of 24 studies were analyzed. Pooled incidence of HIV infection among MSM in China was 5.0/100 person year; Based on HIV case report, severe epidemic areas had higher HIV incidence than other areas (4.9/100 person year vs. 3.4/100 person year). Low education level (HR = 1.61, 95% CI: 1.21-2.15), syphilis prevalence (HR = 3.22, 95% CI: 2.21-4.70), unprotected anal sex (HR = 2.92, 95% CI: 1.51-5.63), minority ethnic group (HR = 4.01, 95% CI: 1.96-8.21), commercial sex (HR = 4.11, 95% CI: 1.47-11.46) and multiple sexual partners (HR = 2.31, 95% CI: 1.60-3.34) were the risk factors for HIV incidence.
CONCLUSIONPooled incidence of HIV infection among MSM was 5.0% in China. Low education level, syphilis prevalence, unprotected anal sex, minority ethnic group, commercial sex and multiple sexual partners were the risk factors for HIV infection.
China ; epidemiology ; Educational Status ; Ethnic Groups ; statistics & numerical data ; HIV Infections ; epidemiology ; Homosexuality, Male ; psychology ; statistics & numerical data ; Humans ; Incidence ; Male ; Minority Groups ; statistics & numerical data ; Prevalence ; Risk Factors ; Sex Work ; statistics & numerical data ; Sexual Partners ; Syphilis ; epidemiology ; Unsafe Sex ; statistics & numerical data
7.Compliance of antiviral therapy and influencing factors in people living with HIV/AIDS in Nanjing.
Hongxia WEI ; Meng LI ; Xiayan ZHANG ; Kai BU ; Yibing FENG ; Xiaoyan LIU ; Ling'en SHI ; Yuheng CHEN ; Chunqin BAI ; Gengfeng FU ; Xiping HUAN ; Email: HUANXP@VIP.SINA.COM. ; Lu WANG ; Email: WANGLU64@163.COM.
Chinese Journal of Epidemiology 2015;36(7):672-676
OBJECTIVETo understand the compliance of highly active anti-retroviral therapy (HAART) and influencing factors in people living with HIV/AIDS (PLWHA) in Nanjing.
METHODSPLWHA receiving HAART in No. 2 Hospital of Nanjing during May-June 2014 were recruited in this study. Self-administrated questionnaire was used to collect the data about HAART compliance and socio-demographic characteristics of PLWHA surveyed. Descriptive and multivariate statistical analysis were conducted to examine the effects of the factors on self-reported HAART adherence.
RESULTSA total of 276 PLWHA were surveyed, According to the evaluation criterion of Center for Adherence Support Evaluation (CASE), 252 cases showed good compliance (91.3%). logistic regression analysis revealed that smoking, progress of the disease and side effects, reminding of taking drug and age were correlated with self-reported HAART adherence.
CONCLUSIONIt is suggested to strengthen the education about antiviral therapy compliance in PLWHA with mild infection and those who are smokers and young, suffer from side effects, have no reminding methods for taking drug.
Acquired Immunodeficiency Syndrome ; drug therapy ; Age Factors ; Antiretroviral Therapy, Highly Active ; Antiviral Agents ; adverse effects ; therapeutic use ; China ; Disease Progression ; HIV Infections ; drug therapy ; Humans ; Medication Adherence ; statistics & numerical data ; Reminder Systems ; Smoking ; Surveys and Questionnaires
8.Clinical study on 137 cases of unrelated single unit umbilical cord blood hematopoietic stem cell transplantation.
Hua ZHU ; Yi ZHANG ; Huanying JIN ; Yinting WANG ; Xiayan SHAO ; Jingsi KONG ; Wenhao HUANG ; Yan HONG ; Chunli LI ; Feng GAO ; Liang CHEN ; Feng WANG ; Yao LU
Chinese Journal of Hematology 2015;36(2):140-143
OBJECTIVETo evaluate relevant prognostic factors of unrelated single unit umbilical cord blood hematopoietic stem cell transplantation (sUCBT), and to explore the correlation between cryopreservation time of cord blood and cell viability and outcome of sUCBT.
METHODSRetrospective analysis of 137 patients undergoing sUCBT with cord blood provided by Shanghai Cord Blood Bank from Mar. 15, 2007 to Dec. 26, 2013 were performed in this study. The mean cryopreservation time of 137 units cord blood was 698(96-1968) days, with mean cell viability of 87.4% after thawing.
RESULTSNo statistical difference on cell viability, hematopoietic reconstitution, graft failure, acute graft versus host disease (GVHD) and overall survival (OS) was found between patients transfused with cord blood preserved below and above 2 years. The 5-year OS of patients transfused with cord blood preserved below and above 2 years were 55.6% and 67.9%, respectively (P=0.124). OS of the UCBT at 2011 and before, and after 2011 was 48.7% and 79.6%, respectively (P=0.001). Age above 16-year-old (RR=2.830, P=0.027) and UCBT at 2011 and before (RR=0.203, P<0.001) were two risk factors of treatment related mortality.
CONCLUSIONOutcome of sUCBT in China had significant improvement in recent 2 years. Cryopreservation time of cord blood had no statistical correlation to cell viability after thawing and clinical outcome.
Cell Survival ; China ; Cord Blood Stem Cell Transplantation ; Fetal Blood ; Graft vs Host Disease ; Hematopoietic Stem Cell Transplantation ; Humans ; Retrospective Studies
9.Impact of cryopreservation duration of 605 units umbilical cord blood on quality of hematopoietic stem cell and outcome of clinical transplantation.
Yi ZHANG ; Hua ZHU ; Huanying JIN ; Yinting WANG ; Xiayan SHAO ; Jingsi KONG ; Wenhao HUANG ; Yan HONG ; Chunli LI ; Feng GAO ; Liang CHEN ; Feng WANG ; Yao LU
Chinese Journal of Hematology 2015;36(1):1-3
OBJECTIVETo investigate the impact of cryopreservation duration of umbilical cord blood (UCB) on quality of hematopoietic stem cell and outcome of clinical transplantation.
METHODS605 units of UCB which had been used in clinical transplantation were previously cryopreserved for 820 (88-2651) days in average. UCB was detected for total nucleated cell count, CD34+ cells count, cell recovery rate, cell viability and CFU-GM after thawing.
RESULTSNo statistical correlation was found between cryopreservation duration and cell recovery rate, cell viability. CFU-GM decreased along with the extension of cryopreservation duration (P=0.011), ranging between 109.6 and 105.7/1 × 10⁵. There was no significant difference on hematopoietic reconstitution time, graft failure, acute GVHD and overall survival among groups with different cryopreservation duration.
CONCLUSIONCryopreservation duration has no significant effect on cell recovery rate, cell viability and clinical transplantation outcome. Extension of cryopreservation duration may reduce CFU-GM of stem cells with fluctaion still in normal range. UCB could maintain cell viability and function to achieve satisfactory clinical transplantation outcome even when thawed after 3 to 7 years' cryopreservation.
Cell Count ; Cell Survival ; Cryopreservation ; Fetal Blood ; Graft vs Host Disease ; Granulocyte-Macrophage Progenitor Cells ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells ; Humans ; Treatment Outcome
10.Compliance of antiviral therapy and influencing factors in people living with HIV/AIDS in ;Nanjing
Hongxia WEI ; Meng LI ; Xiayan ZHANG ; Kai BU ; Yibing FENG ; Xiaoyan LIU ; Lingen SHI ; Yuheng CHEN ; Chunqin BAI ; Gengfeng FU ; Xiping HUAN ; Lu WANG
Chinese Journal of Epidemiology 2015;(7):672-676
Objective To understand the compliance of highly active anti-retroviral therapy (HAART) and influencing factors in people living with HIV/AIDS (PLWHA) in Nanjing. Methods PLWHA receiving HAART in No. 2 Hospital of Nanjing during May-June 2014 were recruited in this study. Self-administrated questionnaire was used to collect the data about HAART compliance and socio-demographic characteristics of PLWHA surveyed. Descriptive and multivariate statistical analysis were conducted to examine the effects of the factors on self-reported HAART adherence. Results A total of 276 PLWHA were surveyed,According to the evaluation criterion of Center for Adherence Support Evaluation (CASE),252 cases showed good compliance (91.3%). logistic regression analysis revealed that smoking,progress of the disease and side effects,reminding of taking drug and age were correlated with self-reported HAART adherence. Conclusion It is suggested to strengthen the education about antiviral therapy compliance in PLWHA with mild infection and those who are smokers and young,suffer from side effects,have no reminding methods for taking drug.


Result Analysis
Print
Save
E-mail