Egg vs. Non-Egg flu shots: which works better?
NCT ID NCT03598439
First seen Nov 21, 2025 · Last updated May 13, 2026 · Updated 21 times
Summary
This study compared two types of flu vaccines—one made using eggs and one not—to see which triggers a stronger immune response in adults aged 18 to 64. Researchers followed 366 participants over two flu seasons to measure antibody levels. The goal was to understand if egg-based vaccines are less effective due to virus mutations during production.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Locations
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Marshfield Clinic - Marshfield Center
Marshfield, Wisconsin, 54449, United States
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