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Found 2 Actively Recruiting clinical trials
Actively Recruiting
Healthy Volunteer
Researchers are evaluating the safety, immune response, and effectiveness of the V181 dengue vaccine in healthy children aged 2 to 17 years. This study aims to see if V181 can reduce the number of dengue infections caused by any of the four dengue virus types, regardless of whether participants have had dengue before. The trial is a phase 3, randomized, double-blind, placebo-controlled study sponsored by Merck Sharp & Dohme LLC. Participants will be randomly assigned to receive a single 0.5 mL dose of either the V181 vaccine or a placebo by subcutaneous injection on Day 1. About 3600 participants are included in the Reactogenicity and Immunogenicity Subset, which will be monitored for safety and immune response for 28 days after vaccination. A smaller group of about 620 participants from this subset will be followed for up to 5 years to assess long-term immune response using specific virus neutralization tests. During the study, participants will be monitored for adverse events, vaccine reactions, and dengue infections, including severity and hospitalization rates, up to 5 years after vaccination. Safety assessments include tracking medically attended and serious adverse events. Immune responses will be measured by antibody levels and seroconversion rates. Participants will have scheduled visits during the first month postvaccination and ongoing follow-ups for several years to evaluate the vaccines long-term effects and protective benefits.
Actively Recruiting
Researchers are evaluating the real-world effectiveness and safety of Nebilet4 nebivolol in adults with hypertension across seven Asian countries. This multinational, multicenter, observational, and prospective study aims to assess blood pressure changes, treatment adherence, quality of life, prescription patterns, and cardiovascular outcomes over up to three years. The study also compares Nebilet4 used alone versus in combination therapy and investigates the relationship between home and office blood pressure measurements. Participants include about 5,000 adults newly diagnosed with or having uncontrolled hypertension who have recently started Nebilet4 or been on it no more than two weeks. Patients are followed regularly for 12, 24, and 36 months, with blood pressure measured at each visit and home readings encouraged. The study collects data on medication dosing and frequency, adherence, and cardiovascular risk factors, while monitoring major adverse cardiac events such as heart attack, stroke, and cardiovascular death. During the study, participants complete questionnaires to assess quality of life and medication adherence every few months. Data are recorded through an electronic system ensuring consistency across sites. Researchers evaluate changes in systolic and diastolic blood pressure and the proportion achieving target blood pressure goals. Safety and any adverse events are documented, with follow-up visits extending up to three years to provide insights into the long-term management of hypertension with Nebilet4.