View clinical trials related to Dengue.
Filter by:Previous studies with one dengue infection in a controlled environment at Upstate generated data that has been important in understanding the clinical signs and symptoms and how a person's body reacts to dengue infection over time. This has helped investigators compare what is seen in the clinic to what is seen in areas where dengue is prevalent. The investigators want to collect similar information when a person gets the same dengue twice in a controlled environment with the hope that this will lead them to a better understanding of the disease. New participants - will receive one inoculation of dengue and then return to the clinic or be contacted by phone over 6 months; - will receive a second inoculation after 6 months and return to the clinic or be contacted by phone for three more months; - will collect saliva at home; - will allow the study team to collect blood and saliva at the clinic visits. Participants who have been in previous dengue inoculation studies at SUNY Upstate - will receive one inoculation of dengue and then return to the clinic or be contacted by phone over 6 months; - will collect saliva at home; - will allow the study team to collect blood and saliva at the clinic visits. All participants will be seen in the clinic every other day for the first three weeks after any inoculation.
Severe dengue is a cause of admission to critical care, especially in pediatric cases, and during epidemic outbreaks. Fluid support is basically the therapy offered, due to a scarcity of antiviral or immunological options to modulate the disease. Dengue is an endemic condition in tropical and subtropical regions as Villavicencio, and local ICUs provide care to the adult and pediatric population from the city and distant surrounding areas. National and international agencies' clinical guidelines have standard recommendations for the therapy of dengue shock syndrome (DSS), but data about performance is not available. Severity, organ dysfunction, hemorrhagic events, and capillary leak are predictors for decease. There are several epidemiological trials about dengue in the region, although publications about the characteristics of patients in ICU are nearly null. Currently, there is enough human resources and technology in ICU to provide an optimal care in cases of severe dengue. There is a need to recognize most appropriate strategies for the treatment of the disease, and their results, to adjust and provide better outcomes. The aim of the study is to analyze the characteristics of patients with severe dengue admitted to the intensive care unit, to contribute to knowledge and better understanding of the disease in a specific clinical environment. An observational retrospective study will be designed by the analysis of the ICU database of hospitals from Villavicencio, Colombia, since January to May 2023. The records of patients admitted with a diagnose of severe dengue will be exported to Excel for reviewing and debugging. Demographic information, laboratory results, severity scores, and outcomes will be examined. Categorical variables will be described by frequency and proportion; quantitative variables will be defined in a central and dispersion distribution. Chi-square and Mann-Whitney U test will be used to compare, according to the characteristics of the outcome. It will be a pioneer study at this region, and it is necessary to determine the characteristics of patients admitted to the intensive care unit, the care provided, and the results of the treatment.
The objective of this observational study of dengue seroprevalence in the metropolitan area of Buenos Aires is to know what percentage of the population has antibodies against dengue in persons 18 years of age or older who are residents of the city of Buenos Aires or its metropolitan area. The main questions to be answered are: - What is the seroprevalence of antibodies against dengue measured by Immunoglobulin G determination by ELISA - Characterize the different dengue serotypes in the affected population. Participants will undergo a small blood draw to determine the presence of Immunoglobulin G antibodies against dengue. - Tests will also be performed to determine infection by flaviviruses other than dengue virus.
This retrospective observational study aims to determine the probability of the risk of dengue transmission through a model based on epidemiological, entomological, socioeconomic, demographic, and landscape variables in the El Vergel neighborhood in the municipality of Tapachula, Chiapas, Mexico. The main question it aims to answer is: 1. Is it possible to identify the risk determinants of dengue transmission by developing a probabilistic model based on the landscape analysis of epidemiological, entomological, sociodemographic, and landscape variables in an endemic urban area of the municipality of Tapachula, Chiapas, Mexico? Participants will be selected from a registry obtained from the Secretary of Health of cases of dengue fever, which will be contrasted with the entomological, socioeconomic, demographic, and landscape variables in the El Vergel neighborhood in Tapachula, Chiapas, Mexico. They will be not contacted or sampled for biologic testing in any shape or form, only the data already collected from the health services will be used.
Background Dengue is a mosquito-borne viral disease caused by four distinct but closely related dengue virus (DENV). The incidence of dengue has grown dramatically worldwide in recent decades, with cases reported to WHO increased from 505,430 cases in 2000 to 5.2 million in 2019. The total number of dengue cases in Malaysia has increased from merely 6,543 cases in the year 1995 to 130,101 cases in the year 2019. Knowledge, attitude and practice remain the most effective driving tool against dengue prevention and control and it becomes very necessary to plan an integrated module for the primary prevention of dengue infection especially among school children. Aims The present study intends to develop, implement and evaluate the effectiveness of theory-based integrated dengue education module in improving the knowledge, attitude, practice, environmental cleanliness index, and dengue index among school children in Selangor and Kuala Lumpur. Methods This study is a single-blinded, cluster randomized controlled trial study, expected to be conducted from 1st June 2023 to 31st May 2025 among 20 primary dan 20 secondary schools in Selangor and Kuala Lumpur. The respondents will be allocated into intervention and control groups randomly based on selected clusters to avoid contamination. The intervention group will receive IDEM, while the control group will receive standard education. The outcome will be measured using validated, self-administered questionnaires at four time points: baseline (T0), Immediately (T1), one month (T2), and three months (T3) post-intervention to measure the effectiveness of the intervention module. The data will be analysed using IBM Statistical Package for Social Science (SPSS) version 28 involving descriptive and inferential statistics. The Generalized Linear Mixed Model (GLMM) will be used to test the main effect and interaction between and within the intervention and control groups over time at T0, T1, T2 and T3. This study will use a significance level with a p-value of 0.05 and a confidence interval of 95% for hypothesis testing
It is not known whether there is a different clinical profile of dengue in patients with immune system dysfunction. Preliminary data and previous literature suggest that autoimmune diseases, and in particular their treatment, may favour the evolution to severe forms of dengue. Our research hypothesis is that the clinico-biological presentation of dengue might be different in case of autoimmune disease, either on the side of overactivation (autoimmune and auto inflammatory diseases without treatment) or immunodepression (autoimmune and auto inflammatory diseases under immunosuppressive treatment).
The purpose of this study is to demonstrate that V181 is safe and well tolerated and elicits an immune response that is non-inferior to that of Butantan-DV at Day 28 post-vaccination in adults 18 to 50 years of age in Brazil. The primary hypothesis is that V181 is non-inferior to Butantan-DV for each of the 4 dengue serotypes based on geometric mean titers (GMTs) and seroconversion rates at Day 28 post-vaccination.
Background: Dengue is a disease caused by a virus transmitted by mosquitoes in tropical and subtropical regions. Dengue is a leading cause of hospital stays and death in parts of Asia and Latin America, and outbreaks have occurred in the US. Currently, only one vaccine is licensed for dengue, but it only protects people who have had dengue before. In people who have never had dengue, that vaccine increases the risk of severe disease. Better vaccines are needed. Objectives: To test a potential new vaccine against dengue. To see if side effects and immune responses are different depending on a person s previous exposure to dengue. Eligibility: Healthy people aged 18 to 59 years. Design: Participants will visit the clinic 11 times in 7 months; 9 of those visits will be in the first 2 months. Two additional visits are optional. Participants will be screened. They will have a physical exam with urine and blood tests. They will complete a survey about their travel history. Participants may opt to have a lymph node aspiration before receiving the study vaccine. An area in the left armpit will be numbed. A needle will be inserted to remove some cells from a lymph node. The vaccine will be injected into the fat under the skin of the participant s upper left arm. Participants will return for a provider visit and blood draws every 3 days for about the first 2 weeks. Then they will return for a provider visit and blood draws after longer intervals up to 7 months. The lymph node aspiration may be repeated at later visits. Participants may opt to return for a last visit after 12 months.
The goal of this clinical trial is to compare the effectiveness of a dengue self-monitoring system with standard care in reducing treatment delay among dengue patients receiving outpatient care. The main question it aims to answer are: • Is a dengue self-monitoring system effective in reducing treatment delay in dengue patients? Participants will use the dengue monitoring system in addition to the standard care they are receiving for outpatient follow up for dengue. Researchers will compare them with dengue patients receiving the usual standard care to see if the dengue monitoring system reduces delay in treatment seeking in patients.
Dengue is an endemic infectious disease in Malaysia. Delays in seeking treatment and improper self-care contribute to dengue complications and mortality. A mobile app (Dengue Aid) was developed to educate and empower patients to perform evidence-based self-care when having dengue fever. DengueAid is hypothesised to improve people's knowledge and health-seeking intention on dengue. This will be evaluated via an online randomised controlled trial. Adults aged 18 and above who have Facebook, an android smartphone and understand either English or Malay language will be recruited through Facebook advertisements. Eligible participants would be randomized to either using the DengueAid app (intervention) or MyHEALTH website (control). An online randomizer tool will be used to randomize participants into the intervention or control group. Participants in both arms would complete a post-intervention online questionnaire (knowledge and health-seeking intention) three days after recruitment.