VRC-FLUMOS0111-00-VP (FluMos-v1)

Background:
Influenza (flu) is a contagious respiratory illness. It is caused by influenza viruses that infect the nose, throat, and sometimes the lungs. Vaccines are given to teach the body to prevent or fight infection. Researchers want to study a new vaccine to prevent the seasonal flu.
Objective:
To see if the FluMos-v1 vaccine is safe and how the body responds to it.
Eligibility:
Healthy adults ages 18-50 years inclusive were enrolled.
Design:
Participants were screened through a separate protocol.
Participants were tested for COVID-19. They may have had a pregnancy test.
Participants received the investigational FluMos-v1 vaccine or the licensed inactivated seasonal quadrivalent influenza vaccine Flucelvax injected in the upper arm.
Participants completed a diary card for 7 days. They recorded any symptoms they had. They were given a thermometer to check their temperature. They were also given a ruler to measure any skin changes at the injection site.
Participants had about 10 study visits. They were asked how they were feeling and if they had taken any medications. They had blood drawn.
Some participants had an optional apheresis. Blood was removed through a needle in a vein in one arm. A machine separated the white blood cells. The rest of the blood was returned through a needle in a vein in the other arm.
Participation lasted for 40 weeks.