Flu vaccine vs. real infection: which sparks a stronger immune response?

NCT ID NCT06620185

First seen Apr 22, 2026 · Last updated May 03, 2026 · Updated 1 time

Summary

This study looks at how the immune system reacts to the flu in two different ways: getting a nasal spray vaccine or being exposed to a controlled dose of live flu virus. Researchers want to understand the differences in symptoms and immune responses between vaccination and actual infection. The study involves 36 healthy adults aged 18-55 and does not offer any treatment or direct health benefit to participants.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Imperial Clinical Research Facility, Imperial College Healthcare NHS Trust

    RECRUITING

    London, W12 0HS, United Kingdom

    Contact

    Contact Email: •••••@•••••

Conditions

Explore the condition pages connected to this study.