Massive flu vaccine safety trial checks for rare side effects in over 42,000 people
NCT ID NCT07332689
First seen Jan 12, 2026 · Last updated May 16, 2026 · Updated 19 times
Summary
This study checked the safety of a quadrivalent (four-strain) flu vaccine in over 42,000 healthy people aged 3 and older. Researchers looked for very rare side effects that occur in less than 0.01% of people. The goal was to confirm the vaccine is safe for widespread use.
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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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Contacts and locations
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Locations
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Gansu Provincial Center for Disease Control and Prevention
Lanzhou, Gansu, 730000, China
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Guangdong Provincial Institute of Biological Products and Materia Medica
Guangzhou, Guangdong, 510440, China
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Hubei Provincial Center for Disease Control and Prevention
Wuhan, Hubei, 430079, China
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Jiangsu Provincial Academy of Preventive Medicine
Nanjing, Jiangsu, 210009, China
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Qinghai Provincial Center for Disease Control and Prevention
Xining, Qinghai, 810007, China
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Shandong Center for Disease Control and Prevention
Jinan, Shandong, 250014, China
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Shanghai Municipal Center for Disease Control and Prevention
Shanghai, Shanghai Municipality, 200336, China
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Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention
Ürümqi, Xinjiang Uygur Autonomous Region, 830002, China
Conditions
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