SARS-COV-2

This study is testing updated versions of Moderna's COVID-19 vaccine designed to protect against newer virus variants. It will enroll about 1,144 people, including adults, older adults, and children with certain health risks, to see how well the new shots trigger an immune respon…

This is an early-stage study testing a new COVID-19 vaccine given as a nasal spray. Researchers want to see if two slightly different versions of the vaccine are safe and can trigger a good immune response in healthy adults. Participants will get two doses, one month apart, and t…

This study aims to see how well two updated Moderna COVID-19 vaccines work to prevent symptomatic infection in healthy adults aged 50 to 64. It will enroll 30,000 participants who do not have high-risk medical conditions. Some participants will receive one of the new vaccine form…

This study aims to understand how the immune system changes over time in adults with severe COVID-19 who are in the intensive care unit (ICU). Researchers will observe 200 patients to see how their immune response relates to complications like organ failure or secondary infection…

This study follows 800 people who recovered from COVID-19 for two years to understand how long the virus can stay in different parts of the body and what long-term health problems might develop. Researchers collect blood, saliva, stool, and other samples up to 12 times to track v…