VACCINATION

This study is testing whether showing personal story videos alongside standard informational videos can encourage more older adults to get recommended vaccines. Researchers at Johns Hopkins are enrolling 6,000 U.S. adults aged 50 and older to watch different video combinations an…

This study is testing a new pandemic flu vaccine specifically for people who have had an organ transplant. It will check if the vaccine is safe and if it triggers a strong immune response in these patients, who are at high risk for severe flu. About 120 stable transplant patients…

This study aims to find the best way to encourage parents to vaccinate their 11-17 year olds against HPV. Researchers are testing whether videos with just facts, just personal stories, or a combination of both are most effective. They will measure how many parents follow through …

This study is testing a new digital system that uses fingerprint identification to help more children in Ghana complete their full set of vaccines. The system tracks children's vaccination records and alerts health workers when a child is behind schedule, while also sending voice…

This study aims to understand how long the protective antibodies from COVID-19 and Monkeypox vaccines or treatments last in the body. Researchers will follow 30 adults for up to 5 years, collecting blood and nasal samples to measure antibody levels over time. The goal is to gathe…

This study aims to see if a simple change in eating schedule can improve the body's immune response to vaccines in older adults. Healthy volunteers aged 60-85 will follow either their normal eating pattern or a time-restricted schedule (eating within an 8-hour window) for four we…

This study aims to understand why vaccine protection weakens over time by tracking immune system responses. Researchers will follow 1200 healthy adults who are getting either their first COVID-19 vaccine or a booster shot. Participants will give blood samples up to eight times ov…

This study aims to understand how biological sex and gender identity affect the body's immune response to a vaccine. Researchers will give a licensed meningitis B vaccine to 250 healthy transgender and cisgender adults and measure their antibody and T-cell levels. The goal is to …

This study aims to find the most effective ways to promote vaccines in rural areas. Researchers will use an online survey with eye-tracking to see which types of social media messages—from experts or influencers—best capture attention and build trust. About 700 adults from rural …