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.
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.
In recent years, dengue has become endemic on La Réunion island, which has led to subsequent increase of secondary dengue infections, higher severity and higher mortality of the cases referred to the hospital. This project will investigate the factors associated with the hospitalization for dengue and the factors associated with dengue severity in a hospital-based cohort study conducted over two dengue seasons, as well as the long-term outcomes over aN18-month follow-up.
The primary objective of this study is to compare the dengue virus-neutralizing antibody geometric mean titers (GMTs) for each of the 4 dengue serotypes (DENV1, DENV2, DENV3, and DENV4) at Day 28 post-vaccination for participants administered the V181 Low-Potency Level vaccine versus the V181 Mid-Potency Level vaccine. This study will also evaluate the safety and tolerability of 3 different V181 potency level vaccines. The primary hypothesis of the study is that the V181 Low-Potency Level vaccine is non-inferior to the V181 Mid-Potency Level vaccine for each of the 4 dengue serotypes based on GMTs at Day 28 post-vaccination.
The primary objective is to determine, among dengue-naïve adults in an endemic population, the protective efficacy of TetraVax-DV TV005 vaccine against dengue infection induced by a live recombinant attenuated rDEN2∆30-7169 attenuated virus strain administered 6, 12, or 24 months after vaccination. Secondary objectives are: 1. Determine the durability of protection of TetraVax-DV TV005. 2. Evaluate the safety of TetraVax-DV TV005 in dengue-naïve volunteers in a dengue endemic population. 3. Evaluate the safety of the rDEN2∆30-7169 attenuated virus strain in a dengue endemic population.
The trial will be conducted in the city of Merida extending ongoing longitudinal cohort to follow a population of 4,600 children 2-15 years old randomly allocated to receive either TIRS treatment or not. If efficacious, TIRS will drive a paradigm shift in Aedes control by: considering Ae. aegypti behavior to rationally guide insecticide applications; the change to preventive control (pre- ABD transmission season rather than in response to symptomatic cases); the use of third generation insecticides to which Ae. Aegypti is susceptible.
The primary objective of the study is to identify any suspected dengue case in subjects that received at least one dose of the CYD dengue vaccine who were classified as seronegative or undetermined at baseline (according to PRNT50 at baseline, or anti-non-structural protein 1 [NS1] test Post-dose 3) in the Colombian study sites of CYD15, CYD13, CYD29, CYD64, CYD65 trials in order to allow appropriate access to care until the completion of 10 years after the last CYD Dengue Vaccine received by each participant
The purpose of this study is to describe antibody persistence for each of the 4 dengue serotypes for up to 63 months after the first vaccination in the primary vaccination series for participants from parent trial DEN-315 (NCT03341637) (Mexico) and for up to 36 months after the first vaccination in the primary vaccination series for participants from parent trial DEN-304 (NCT03423173) (United States [US]) and to describe the impact of a tetravalent dengue vaccine (TDV) booster dose vs placebo on antibody response for each of the 4 dengue serotypes at 1 month and 6 months post administration of the TDV booster or placebo.
This is an observational study for 5 years, and aims to determine the risk of developing dengue among Philippine children who are eligible to receive the dengue vaccine during the DOH mass dengue vaccination, by dengue serostatus at baseline.
This study is a Phase 1, randomized, open-label study of the prime-boost vaccine candidates given in the prime-boost regimen previously demonstrated to have a high level of immunogenicity and immune durability: Day 0 prime (PIV) and Day 180 boost (LAV), and compare it with a previously untested schedule: Day 0 prime (PIV) and Day 90 boost (LAV) in order to define the potential tradeoff between potential immunogenicity, including cell-mediated immunity, and a more practical dosing schedule.