View clinical trials related to Dengue Hemorrhagic Fever.
Filter by:World Health Organisation (WHO) has identified Dengue as the fastest spreading mosquito-borne disease in the world. This study follows on from the National Medical Research Council STOP Dengue Translational and Clinical Research flagship grant. Differential serum concentrations of alpha2-macroglobulin (A2M), chymase (CMA1) and vascular endothelial growth factor A (VEGFA) were discovered to accurately identify dengue patients who will develop severe disease from those who will not, prior to the development of severe complications. By identifying patients at risk of developing severe disease in advance, these patients can be monitored more closely to provide more timely fluid interventions, and hopefully further reduce fatality rate. At the same time, more patients who are not at risk can be managed as outpatients to further minimize unnecessary hospitalization costs and wastage of healthcare resources. After discovery of the Dengue prognostic biomarkers, a multivariate logistic regression predictive model was built from a small retrospective derivative cohort (50 subjects), followed by validation using a small prospective validation cohort (50 subjects). The model had a receiver operating characteristic (ROC) curve AUC (area under the curve) of 0.944, and a sensitivity and specificity of 90% and 91% during validation, respectively. The premise of this study is to validate our observations in a larger prospective cohort (200 subjects). At the same time, we would like to better understand the characteristics of the Dengue prognostic biomarkers, especially whether there are situations in which the biomarkers cannot predict Dengue Haemorrhagic Fever (DHF)/ Dengue Shock Syndrome (DSS) and/or Severe Dengue (SD) and how the biomarkers can further improve the cost-effectiveness of the clinical management of Dengue patients.
Design and Outcomes This research study is designed as open-label, sequential dose-escalating clinical trial. There will be two phases of enrollment. In the first phase, pediatric dengue patients with body weight greater than 30 kg will be recruited. The first six volunteers will be administered with 400 μg/kg every 24 hours for a total of three times. The last six volunteers will be administered with 600 μg/kg every 24 hours for a total of three times. In the second phase, pediatric dengue patients with body weight between 15 to 30 kg will be recruited. Similar to the first phase, the first six and the last six volunteers will be administered with 400 μg/kg and 600 μg/kg every 24 hours for a total of three times, respectively. A total of 24 volunteers will be recruited from Faculty of Medicine Siriraj hospitals
The aim of the study was to assess the safety and immunogenicity of the CYD dengue vaccine and Gardasil (Human Papillomavirus Quadrivalent [Types 6, 11, 16, and 18] Vaccine, Recombinant) when administered concomitantly or sequentially. Primary objectives: - To demonstrate that the humoral immune response (in terms of geometric mean titers [GMTs]) to Gardasil after concomitant administration was non-inferior to sequential administration with the CYD dengue vaccine measured 28 days after the last dose of Gardasil. - To demonstrate that the humoral immune response to the CYD dengue vaccine after concomitant administration was non-inferior to sequential administration with Gardasil measured 28 days after the last dose of the CYD dengue vaccine. Secondary Objectives: - To demonstrate that the humoral immune response (in terms of seroconversion) to Gardasil vaccine after concomitant administration was non-inferior to sequential administration with the CYD dengue vaccine measured 28 days after the last dose of Gardasil. - To describe the humoral immune response to Gardasil at baseline and after each dose of Gardasil in each and any group. - To describe the humoral immune response to the CYD dengue vaccine at baseline and after each dose of the CYD dengue vaccine in each and any group. - To describe the safety of Gardasil and the CYD dengue vaccine after each and any dose in each group.
The aim of this study was to investigate the immunogenicity and safety of CYD dengue vaccine and Cervarix when administered concomitantly or sequentially in healthy female participants aged 9-14 years of age. Primary objectives: - To demonstrate that the humoral immune response (in terms of geometric mean titers [GMTs]) to Cervarix after concomitant administration with the CYD dengue vaccine is non-inferior to the humoral immune response (in terms of GMTs) after sequential administration with the CYD dengue vaccine measured 28 days after the last dose of Cervarix. - To demonstrate that the humoral immune response (in terms of GMTs) to the CYD dengue vaccine after concomitant administration with Cervarix is non-inferior to the humoral immune response (in terms of GMTs) to the CYD dengue vaccine after sequential administration with Cervarix measured 28 days after the last dose of the CYD dengue vaccine. Secondary Objectives: - To demonstrate that the humoral immune response (in terms of seroconversion) to Cervarix after concomitant administration with the CYD dengue vaccine is non-inferior to the humoral immune response (in terms of seroconversion) to Cervarix sequential administration with the CYD dengue vaccine measured 28 days after the last dose of Cervarix. - To describe the humoral immune response to Cervarix at baseline and after each dose of Cervarix in each and any group. - To describe the humoral immune response to the CYD dengue vaccine at baseline and after each dose of the CYD dengue vaccine, in each and any group. - To describe the safety of Cervarix and CYD dengue vaccine after each and any dose in each group.
The aim of the study was to assess and describe the booster effect of a tetravalent CYD dengue vaccine dose administered about 5 years or more after the completion of a 3-dose vaccination schedule in Singapore. 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 CYD28 trial (participants from Group 1 only). Secondary Objectives: - If the primary objective of non-inferiority 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 CYD28 trial (participants from Group 1 only). - To describe the immune responses elicited by the CYD dengue vaccine booster or placebo injection in participants who received three doses of the CYD dengue vaccine in the CYD28 trial in all participants. - To describe the neutralizing antibody levels of each dengue serotype Post Dose 3 (CYD28 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 study participants. - To evaluate the safety of booster vaccination with CYD dengue vaccine in all participants.
The aim of the study is to evaluate the safety and immunogenicity of the Dengue vaccine in a population of special interest, such as HIV-positive adults previously exposed to dengue. Primary Objective: - To describe the safety of each injection of CYD dengue vaccine in HIV-positive adults previously exposed to dengue. Secondary Objectives: - To describe the humoral immune response to each dengue serotype at baseline and after each injection of CYD dengue vaccine in HIV-positive adults previously exposed to dengue. - To detect the CYD dengue vaccinal viremia post-Inj 1 in HIV-positive adults previously exposed to dengue. - To describe changes in CD4 count and HIV RNA viral load after each injection of CYD dengue vaccine in HIV-positive adults previously exposed to dengue. Observational Objective: - To describe the FV (YF, Dengue, Zika) serological status in the study population at baseline.
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 was to conduct a passive surveillance of hospitalized dengue cases in participants who participated in study CYD23 (NCT00842530). The Objectives: - To describe the incidence of virologically-confirmed hospitalized dengue cases. - To characterize hospitalized dengue cases. - To evaluate the occurrence of related and fatal serious adverse events (SAEs).
The aim of the study was to evaluate a compressed dosing schedule and the immunologic effects of co-administration of a CYD dengue vaccine with a licensed flavivirus (FV) with Japanese encephalitis (JE) vaccine. Primary Objectives: - To describe and compare the humoral immune response to each of the 4 parental dengue virus serotypes at baseline and 28 days after each CYD dengue vaccine dose. - To describe the persistence of the humoral immune response to each of the 4 parental dengue virus serotypes 6 after CYD dengue vaccine Dose 3, irrespective of whether or not JE vaccine had been previously administered. Secondary Objectives: - To describe the safety profile after each injection of CYD dengue vaccine. - To describe the humoral immune response to each of the 4 parental dengue virus serotypes at baseline and 28 days after each CYD dengue vaccine dose when administered with or after JE virus vaccine in Groups 3 and 4. - To describe the persistence of the humoral immune response to each of the 4 parental dengue virus serotypes at 6 months post-dose 3 in all four groups and at 12 months post-dose 3 in Groups 1 and 3 with the compressed schedule. - To determine the level of viremia on Day (D)0, D3, D5, D7 and D14 following each CYD vaccine dose administered in Groups 1-4. - To describe the JE humoral immune response at baseline and 28 days after each injection of CYD dengue vaccine in Groups 3 and 4.