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Clinical Trial Summary

This is one project of a larger ongoing study related to the immune system's response to the flu virus. This study is designed to determine how immune memory develops at the actual site of exposure, and how immunization may alter this process.


Clinical Trial Description

This is a Phase IV study of licensed influenza vaccines with up to 50 volunteers, 20-75 years of age. Each volunteer will participate for approximately 1 week including enrollment, vaccination, and completion of sample collection. The study has a total of 3 visits. Study Procedures: Screening Visit: Procedures during this visit are: Informed consent process, assess eligibility collect relevant clinical data and obtain 10 mL of blood to ensure the FNA will be safe (acceptable CBC and PT/PTT). Visit 1: Vaccination Visit: Eligible subjects will return and have a 20 mL blood sample. Participants will receive the inactivated flu vaccine into the right anterior quadriceps. Volunteers will be monitored for at least 15 minutes after study vaccination. Visit 2: FNA Procedure: Seven days after vaccination the participant will return for another collection of 20 ml of blood and a fine needle aspiration of a right inguinal lymph node under ultrasound guidance by a trained pathologist. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03898973
Study type Interventional
Source Stanford University
Contact
Status Withdrawn
Phase Phase 4
Start date April 11, 2019
Completion date November 17, 2023

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