View clinical trials related to Dengue.
Filter by:The aim of the study was to assess the immune response and the safety of different vaccination schedules of CYD dengue vaccine. The primary objectives of the study were: - To demonstrate the non-inferiority of the immune response elicited against each dengue serotype by CYD dengue vaccine given as a 2-dose schedule (Group 2) compared to the immune response elicited by CYD dengue vaccine given as a 3-dose schedule (Group 1), in previously dengue exposed participants 28 days after the last injection. - To demonstrate the non-inferiority of the immune response elicited against each dengue serotype by CYD dengue vaccine given as a 2-dose schedule (Group 2) compared to the immune response elicited by CYD vaccine given as a 3-dose schedule (Group 1) in previously dengue exposed participants, 1 year after the last injection. - To demonstrate the non-inferiority of the immune response elicited against each dengue serotype elicited by a booster dose of CYD dengue vaccine one year or two years after the last injection in the primary series in previously dengue exposed participants, compared to the immune response post dose 3 in Group 1. The secondary objectives of the study were: - To demonstrate the superiority of the immune response elicited by CYD dengue vaccine given as a 2-dose schedule (Group 2) compared to the immune response elicited by CYD dengue vaccine given as a 3-dose schedule (Group 1), in previously dengue exposed participants, 28 days after the last injection. - To demonstrate the superiority of the immune response elicited by CYD dengue vaccine given as a 2-dose schedule (Group 2) compared to the immune response elicited by CYD dengue vaccine given as a 3-dose schedule (Group 1), in previously dengue exposed participants, one year after the last injection. - To describe the neutralizing antibody levels of each dengue serotype at 28 days post-injection 3 to the antibody levels immediately before receiving a booster dose, by baseline dengue serostatus. - To describe the neutralizing antibody levels of each dengue serotype at 28 days post-injection 2 and 28 days post-injection 3 from Group 1 in a primary series schedule by baseline dengue serostatus. - To demonstrate the superiority of the immune response elicited against each dengue serotype 28 days after administration of a booster dose of CYD dengue vaccine, in previously dengue exposed participants, at one year or two years after last injection in the primary series. - To describe the seroconversion rate 28 days post-booster injection in all 3 groups. - To describe all hospitalized virologically confirmed dengue (VCD) cases during the study. - To evaluate the safety profile of CYD after each and any injection during the trial. Safety assessments include solicited reactions within 7 or 14 days after each injection, unsolicited adverse events within 28 days after each injection, and serious adverse events during the study period.
The aim of the study was to assess and describe the booster effect of a CYD dengue vaccine dose administered 4 to 5 years after the completion of a 3-dose vaccination schedule. Primary Objective - To demonstrate the non-inferiority, in terms of geometric mean of titer ratios (GMTRs), of a CYD dengue vaccine booster compared to the third CYD dengue vaccine injection in participants from CYD13 - NCT00993447 and CYD30 - NCT01187433 trials (participants from Group 1 only). Secondary Objectives: - If the primary objective of non-inferiority was achieved: To demonstrate the superiority, in terms of GMTRs, of a CYD dengue vaccine booster compared to the third CYD dengue vaccine injection in participants from CYD13 and CYD30 trials. - To describe the immune responses elicited by a CYD dengue vaccine booster and placebo injection in participants who received 3 doses of the CYD dengue vaccine in the CYD13 and CYD30 trials in all participants. - To describe the neutralizing antibody levels of each dengue serotype post-dose 3 (CYD13 and CYD30 participants) and immediately prior to booster or placebo injection in all participants. - To describe the neutralizing antibody persistence 6 months, 1 year, and 2 years post booster or placebo injection in all participants. - To evaluate the safety of booster vaccination with the CYD dengue vaccine in all participants.
The purpose of this study is to elucidate the local epidemic problem and epidemiological characters of dengue fever in Guangzhou, to establish diagnostic and treatment standard and clinical treatment system of severe cases to reduce the morbidity and mortality of dengue fever.
The burden of dengue infection has increased due to the current non-specific classification. A pilot study was conducted to evaluate the five of the biomarkers: neopterin, vascular endothelial growth factor (VEGF), thrombomodulin, Vascular Cell Adhesion Molecule 1 (VCAM-1) and pentraxin 3 (PTX-3). VEGF and PTX-3 was the only two potential biomarkers in differentiating severe dengue from non-severe dengue cases. The analysis between severe dengue and non-severe dengue cases indicated that only VEGF was able to discriminate the two categories. Though VCAM-1 and PTX-3 were not statistically significant, the p-values were at the margin of the pre-determined p-value of less than 0.05. Hence, this study aims to evaluate VEGF and PTX-3 levels in differentiating severe dengue from non-severe dengue cases. The secondary objective is to evaluate the correlation of VEGF and PTX-3 levels with full blood count (platelet, white blood cell count and haematocrit) and liver function test (alanine aminotransferase and aspartate).
The purpose of this study is to determine the incidence of dengue fever and to build capacity for dengue vaccine trials in dengue-endemic regions of South Asia.
Dengue fever is an acute febrile illness transmitted by mosquitoes, which affects half the world's population. There are 96 million symptomatic infections, 500,0000 hospitalisations and 25,000 deaths per year attributed to the disease. The economic burden is $12 billion. In Singapore, as elsewhere, the incidence of the disease continues to increase despite aggressive control measures. At present there are no approved medicines for treating dengue fever. Only supportive fluid replacement therapy is used to treat vascular leakage in patients with severe illness. Therefore there is an urgent need to find alternative treatments. Experiments in the laboratory have shown that Celgosivir and modipafant inhibit dengue virus and improve mouse survival. Both drugs have previously been used in humans with good safety records, so investigators are taking this one step further to find out how well it works in dengue patients. Investigators plan to enroll dengue patients within 48 hours of fever onset and assign them to one of four treatment groups over five days. Together with the support from the industry partner, 60°Pharmaceuticals PLC, the investigators will determine the safety and effectiveness of these drugs on acute dengue patients and pave the way forward for dengue antiviral medicines to reach patients.
This study aims to analyse the results of national data collected by the e-Dengue Information System in order to determine the factors associated with disease outcomes in all patients registered from January 2013 to December 2014.
Dengue infection has been identified as the fastest spreading mosquito-borne viral disease by World Health Organization (WHO), which affects more than 2.5 billion people living in the subtropical and tropical regions. Malaysia is hyper-endemic with all four dengue virus serotypes circulating and responsible for the escalating number of cases over the years. As of 28 February 2015, there are 62 deaths secondary to dengue infection being reported in Malaysia; and the total number of dengue cases reported in the same period was 23,966 which is 46% higher than the same reporting period of 2014. Although dengue virus has been identified for so many years and plenty of research work has been carried out, it was proven that there are still many aspects that we are not too sure about the disease. Therefore, this multi-center, observational cohort study is designed to investigate the clinical course of hospitalized dengue infection in Malaysia. The study population of this study consists of male or female patients with dengue to be randomly sampled from hospitals in Malaysia. This study will be conducted in 2 stages whereby the 1st stage will only focus on the basic social and clinical data to describe the clinical course of dengue as general and the 2nd stage will collect the more detailed clinical and management data to describe the detailed clinical course, management and prognosis of dengue. All hospital participation in this study is voluntary, and approval will be obtained from National Institute of Health (NIH) and Medical Research Ethics Committee (MREC) prior to any recruitment.
Dengue viruses are mosquito-borne flaviviruses. Each year, dengue viruses infect millions of people throughout the tropics and subtropics. This study will evaluate the safety, tolerability, and immunogenicity of a tetravalent recombinant subunit dengue vaccine (V180) in healthy adults who previously received a live-attenuated tetravalent dengue vaccine (TV003 or TV005).
Dengue is the most common viral illness spread by mosquitos. It is important to diagnose dengue to prompt adequate therapy and initiate local mosquito control. Easy to use point of care tests are needed to improve dengue diagnosis. Oral fluid collection may be a simple, non-invasive way to diagnose dengue in the community. However, it is currently unknown if oral fluid is an accurate way to diagnose dengue and if the use of a specialized oral fluid collector could help to improve dengue diagnosis. In this study, the investigators will analyze the oral fluid of suspected dengue patients compared to serum samples for dengue diagnosis. From this information the investigators will be able to determine if oral fluid is a convenient way to diagnose dengue and if the oral fluid collector aids in improving diagnosis.