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Climate-driven dengue fever outbreaks in Nepal:Trends,challenges,and strategies

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World Journal of Virology 2024年第4期13卷 135-138页

作者： Chandan Kumar Thakur Samita Adhikari Meghnath Dhimal Clinical Microbiology Karnali Academy of Health SciencesJumla 21200KarnaliNepal Hospital Infection Control Nepal Mediciti HospitalLalitpur 44700BagmatiNepal Research Section Nepal Health Research CouncilKathmandu 44600BagmatiNepal

dengue fever(DF)has become a major public health concern in Nepal,with increasing outbreaks in recent *** by Aedes mosquitoes,this climate-sensitive viral disease presents a significant challenge for healthcare providers and *** 2004,Nepal has experienced a sharp increase in DF cases,peaking in 2022 with 54784 cases and 88 *** surge,driven mainly by serotypes 1,2,and 3,is exacerbated by climate change,which prolongs mosquito breeding seasons due to warmer temperatures and increased *** trend has even impacted previously unaffected hilly *** dengue control strategies must focus on climate change adaptation,strengthening healthcare system reinforcement,raising public awareness,and enhancing vector control *** initiatives,like the national dengue control program,play a critical role,but research and community engagement are also vital for prevention and early *** climate resilience into public health efforts is essential to reducing the dengue burden in Nepal.

关键词： Climate change dengue fever dengue outbreaks dengue control Nepal Public health Vector-borne diseases

dengue hemorrhagic fever with rectus sheath hematoma:A case report

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Asian Pacific Journal of Tropical Medicine 2024年第3期17卷 136-138页

作者： Boudhayan Bhattacharjee Hardik Patel Rucha Karad Vasireddy Teja Agnibho Mondal Soumendra Nath Haldar Bibhuti Saha Department of Infectious Diseases and Advanced Microbiology School of Tropical MedicineKolkataIndia

Rationale:Acute pain is a medical emergency that requires prompt abdominal evaluation and ***,a mosquito-borne arboviral infection,can lead to complications such as acute abdominal *** concerns:A 72-year-old hypertensive female presented with high-grade intermittent fever with chills and rigors for four *** was diagnosed with dengue fever(NS1Ag-reactive)the day before admission.A contrast-enhanced computed tomography of the abdomen showed a hematoma along the rectus sheath which was managed conservatively as per surgical ***:dengue hemorrhagic fever with rectus sheath ***:Blood transfusion and fluid ***:Ten days after discharge,the patient reproted no pain in the right iliac fossa and the size of the hematoma was significantly ***:Although it is rarely seen as a cause of acute abdomen,complaints of adnominal pain should never be ignored in critical or convalescent phase of dengue *** investigations should be promptly conducted as hematoma is often difficult to be diagnosed *** in diagnosis of rectus sheath hematoma can be fatal.

关键词： dengue fever Rectus sheath hematoma Surgical emergency Acute appendicitis

Near real-time characterisation of urban environments: a holistic approach for monitoring dengue fever risk areas

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International Journal of Digital Earth 2014年第11期7卷 916-934页

作者： Muhammad Shahzad Sarfraz Nitin Kumar Tripathi Asanobu Kitamoto Department of Computer Science COMSATS Institute of Information Technology(CIIT)AbbottabadPakistan Remote Sensing and GIS Asian Institute of Technology(AIT)BangkokThailand Digital Content and Media Sciences Research Division National Institute of Informatics(NII)TokyoJapan

Despite frequent use of digital devices in everyday life,cost-effective measurement of public health issues in urban areas is still *** study was,therefore,planned to extract land-use types using object-based and spatial metric approaches to explore the dengue incidence in relation to the surrounding environment in near real-time using Google and Advanced Land Observation Satellite *** characterised image showed useful classification of an urban areawith 77%accuracy and 0.68 *** analysis on public health data indicated that most of the dengue cases were found in densely populated areas surrounded by dense *** living in independent houses having sparsely vegetated surroundings were found to be less *** incidence was more prevalent in people of 5-24 years of age(67%);while in terms of occupation,mostly students,the unemployed,labourers and farmers(88%)were *** general,males were affected slightly more(10%)than *** analyses indicated that most of the dengue cases were around institutions(40%),religious places(18%)and markets(15%).Thus,usage of Digital Earth scalable tools for monitoring health issues would open new ways for maintaining a healthy and sustainable society in the years ahead.

关键词： dengue fever land-use land-cover monitoring dengue risk urban environment object-based classification

Estimating the basic reproduction number for single-strain dengue fever epidemics

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Infectious Diseases of Poverty 2014年第1期3卷 100-116页

作者： Adnan Khan Muhammad Hassan Mudassar Imran Department of Mathematics Lahore University of Management SciencesDHALahorePakistan Department of Mathematics Swiss Federal Institute of Technology(ETH)ZurichRämistrasse 1018092 ZurichSwitzerland

Background:dengue,an infectious tropical disease,has recently emerged as one of the most important mosquito-borne viral diseases in the *** perform a retrospective analysis of the 2011 dengue fever epidemic in Pakistan in order to assess the transmissibility of the *** obtain estimates of the basic reproduction number R0 from epidemic data using different methodologies applied to different epidemic models in order to evaluate the robustness of our ***:We first estimate model parameters by fitting a deterministic ODE vector-host model for the transmission dynamics of single-strain dengue to the epidemic data,using both a basic ordinary least squares(OLS)as well as a generalized least squares(GLS)***,we perform the same analysis for a direct-transmission ODE model,thereby allowing us to compare our results across different *** addition,we formulate a direct-transmission stochastic model for the transmission dynamics of dengue and obtain parameter estimates for the stochastic model using Markov chain Monte Carlo(MCMC)*** each of the cases we have considered,the estimate for the basic reproduction number R0 is initially greater than unity leading to an epidemic ***,control measures implemented several weeks after the initial outbreak successfully reduce R0 to less than unity,thus resulting in disease ***,it is observed that there is strong agreement in our estimates for the pre-control value of R0,both across different methodologies as well across different ***,there are also significant differences between our estimates for the post-control value of the basic reproduction number across the two different ***:In conclusion,we have obtained robust estimates for the value of the basic reproduction number R0 associated with the 2011 dengue fever epidemic before the implementation of public health control ***,we have shown that there is close agreement

关键词： Epidemiology dengue fever Statistical inference Stochastic model Markov chain Monte Carlo

Modeling and predicting dengue fever cases in key regions of the Philippines using remote sensing data

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Asian Pacific Journal of Tropical Medicine 2019年第2期12卷 60-66页

作者： Maria Ruth B.Pineda-Cortel Benjie M.Clemente Pham Thi Thanh Nga Department of Medical Technology Faculty of PharmacyUniversity of Santo Tomas Research Center for the Natural and Applied Sciences University of Santo Tomas The Graduate School University of Santo Tomas Vietnam National Space Center Vietnam Academy of Science and Technology

Objective: To correlate climatic and environmental factors such as land surface temperature, rainfall, humidity and normalized difference vegetation index with the incidence of dengue to develop prediction models for the Philippines using remote-sensing ***: Timeseries analysis was performed using dengue cases in four regions of the Philippines and monthly climatic variables extracted from Global Satellite Mapping of Precipitation for rainfall, and MODIS for the land surface temperature and normalized difference vegetation index from *** dataset during the period of study was utilized in Autoregressive Integrated Moving Average models to predict dengue incidence in the four regions being ***: The best-fitting models were selected to characterize the relationship between dengue incidence and climate *** predicted cases of dengue for January to December 2015 period fitted well with the actual dengue cases of the same *** also showed significantly good linear regression with a square of correlation of 0.869 5 for the four regions ***: Climatic and environmental variables are positively associated with dengue incidence and suit best as predictor factors using Autoregressive Integrated Moving Average *** finding could be a meaningful tool in developing an early warning model based on weather forecasts to deliver effective public health prevention and mitigation programs.

关键词： dengue fever Climate change Remote sensing data Autoregressive Integrated Moving Average models

Characterizing a large outbreak of dengue fever in Guangdong Province, China

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Infectious Diseases of Poverty 2016年第1期5卷 368-375页

作者： Jian-Peng Xiao Jian-Feng He Ai-Ping Deng Hua-Liang Lin Tie Song Zhi-Qiang Peng Xiao-Cheng Wu Tao Liu Zhi-Hao Li Shannon Rutherford Wei-Lin Zeng Xing Li Wen-Jun Ma Yong-Hui Zhang Guangdong Provincial Institute of Public Health Guangdong Provincial Center for Disease Control and PreventionGuangzhouChina Guangdong Provincial Center for Disease Control and Prevention GuangzhouChina School of Public Health Sun Yat-sen UniversityGuangzhouChina Center for Environment and Population Health Griffith UniversityBrisbaneAustralia

Background:dengue cases have been reported each year for the past 25 years in Guangdong Province,China with a recorded historical peak in *** study aims to describe the epidemiological characteristics of this large outbreak in order to better understand its epidemic factors and to inform control ***:Data for clinically diagnosed and laboratory-confirmed dengue fever cases in 2014 were extracted from the China Notifiable Infectious Disease Reporting *** analyzed the incidence and characteristics of imported and indigenous cases in terms of population,temporal and spatial ***:A total of 45224 dengue fever cases and 6 deaths were notified in Guangdong Province in 2014,with an incidence of 47.3 per 100000 *** elderly(65+years)represented 11.7%of total indigenous cases with the highest incidence(72.3 per 100000).Household workers and the unemployed accounted for 23.1%of indigenous *** majority of indigenous cases occurred in the 37th to 44th week of 2014(September and October)and almost all(20 of 21)prefecture-level cities in Guangdong were *** to the non-Pearl River Delta Region,the Pearl River Delta Region accounted for the majority of dengue cases and reported cases earlier in *** virus serotypes 1(DENV-1),2(DENV-2)and 3(DENV-3)were detected and DENV-1 was predominant(88.4%).Conclusions:dengue fever is a serious public health problem and is emerging as a continuous threat in Guangdong *** is an urgent need to enhance dengue surveillance and control,especially for the high-risk populations in high-risk areas.

关键词： dengue fever Epidemiology Outbreak China

Impact of climate change on dengue fever epidemics in South and Southeast Asian settings:A modelling study

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Infectious Disease Modelling 2023年第3期8卷 645-655页

作者： Yawen Wang Shi Zhao Yuchen Wei Kehang Li Xiaoting Jiang Conglu Li Chao Ren Shi Yin Janice Ho Jinjun Ran Lefei Han Benny Chung-ying Zee Ka Chun Chong Jockey Club School of Public Health and Primary Care The Chinese University of Hong KongHong Kong Special Administrative RegionChina Centre for Health Systems and Policy Research The Chinese University of Hong KongHong Kong Special Administrative RegionChina Clinical Trials and Biostatistics Laboratory Shenzhen Research InstituteThe Chinese University of Hong KongShenzhenChina Division of Landscape Architecture Department of ArchitectureFaculty of ArchitectureThe University of Hong KongHong Kong Special Administrative RegionChina School of Public Health Shanghai Jiao Tong University School of MedicineShanghaiChina School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghaiChina

The potential for dengue fever epidemic due to climate change remains uncertain in tropical *** study aims to assess the impact of climate change on dengue fever transmission in four South and Southeast Asian *** collected weekly data of dengue fever incidence,daily mean temperature and rainfall from 2012 to 2020 in Singapore,Colombo,Selangor,and Chiang *** for temperature and rainfall were drawn for three Shared Socioeconomic Pathways(SSP126,SSP245,and SSP585)*** a disease transmission model,we projected the dengue fever epidemics until 2090s and determined the changes in annual peak incidence,peak time,epidemic size,and outbreak duration.A total of 684,639 dengue fever cases were reported in the four locations between 2012 and *** projected change in dengue fever transmission would be most significant under the SSP585 *** comparison to the 2030s,the peak incidence would rise by 1.29 times in Singapore,2.25 times in Colombo,1.36 times in Selangor,and>10 times in Chiang Mai in the 2090s under ***,the peak time was projected to be earlier in Singapore,Colombo,and Selangor,but be later in Chiang Mai under the SSP585 *** in a milder emission scenario of SSP126,the epidemic size was projected to increase by 5.94%,10.81%,12.95%,and 69.60%from the 2030se2090s in Singapore,Colombo,Selangor,and Chiang Mai,*** outbreak durations in the four settings were projected to be prolonged over this century under SSP126 and SSP245,while a slight decrease is expected in 2090s under *** results indicate that climate change is expected to increase the risk of dengue fever transmission in tropical areas of South and Southeast *** greenhouse gas emissions could be crucial in reducing the transmission of dengue fever in the future.

关键词： Temperature Rainfall Extreme weather event dengue fever

Community social capital on fighting dengue fever in suburban Surabaya, Indonesia: A qualitative study

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International Journal of Nursing Sciences 2017年第4期4卷 374-377页

作者： Asri Khanitta Nuntaboot Pipit Festi Wiliyanarti Department of Community Health Nursing Faculty of Health SciencesMuhammadiyah Surabaya UniversityIndonesia Faculty of Nursing Khon Kaen UniversityThailand

Purpose:dengue hemorraghic fever(DHF)is a communicable disease that is difficult to manage,espe-cially in tropical *** capital is believed to be able to improve the ability of entire com-munities to work together to solve a collective health *** study aimed to describe the existing social capital in a community and how it was used to fight ***:Qualitative descriptive methods were used,and in-depth interviews were conducted with 13 *** study was conducted in the Sawahan sub-district,Surabaya,Indonesia,an endemic area that combats DHF every ***:Results showed that social capital as a community feature provides the main cornerstone of collective *** creation of social groups,intersectoral collaboration,mutual assistance in cleaning,and voluntary work were visible forms of social capital in the prevention and control of *** from strong leaders also had significant ***:This study showed that social capital was an important feature,which,if managed,used and accessed properly,would be able to provide ideas for solving community problems.

关键词： Community-based participatory research dengue fever Qualitative research

The Impacts of Mosquito Density and Meteorological Factors on dengue fever Epidemics in Guangzhou, China, 2006-2014: a Time-series Analysis

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Biomedical and Environmental Sciences 2015年第5期28卷 321-329页

作者： SHEN Ji Chuan LUO Lei LI Li JING Qin Long OU Chun Quan YANG Zhi Cong CHEN Xiao Guang Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes Department of Pathogen BiologySchool of Public Health and Tropical MedicineSouthern Medical University Guangzhou Center for Disease Control and Prevention State Key Laboratory of Organ Failure Research Department of BiostatisticsGuangdong Provinical Key Laboratory of Tropical Disease ResearchSchool of Public Health and Tropical MedicineSouthern Medical University

Objective To explore the associations between the monthly number of dengue fever（DF） cases and possible risk factors in Guangzhou, a subtropical city of China. Methods The monthly number of DF cases, Breteau Index （BI）, and meteorological measures during 2006-2014 recorded in Guangzhou, China, were assessed. A negative binomial regression model was used to evaluate the relationships between BI, meteorological factors, and the monthly number of DF cases. Results A total of 39,697 DF cases were detected in Guangzhou during the study period. DF incidence presented an obvious seasonal pattern, with most cases occurring from June to November. The current month＇s BI, average temperature （Tare）, previous month＇s minimum temperature （Train）, and Tare were positively associated with DF incidence. A threshold of 18.25℃ was found in the relationship between the current month＇s Tmin and DF incidence. Conclusion Mosquito density, Tove, and Tmin play a critical role in DF transmission in Guangzhou. These findings could be useful in the development of a DF early warning system and assist in effective control and prevention strategies in the DF epidemic.

关键词： Breteau index dengue fever Meteorological factors Negative binomial regression model