Can an EV71 vaccine protect older kids too?
NCT ID NCT07178522
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests an inactivated EV71 vaccine (Envacgen®) in healthy children aged 6 to under 10 years and compares their immune response and safety to children aged 2 to under 6 years. Around 378 children will receive two shots 57 days apart. The goal is to see if the vaccine works as well in older children, potentially expanding its use against enterovirus 71, a cause of hand-foot-mouth disease.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Inactivated EV71 enterovirus vaccine (Envacgen®)
What this could lead to
If successful, this could show that the EV71 vaccine works safely in children up to age 10, expanding protection against hand-foot-mouth disease caused by enterovirus 71.
What could go wrong
This is a small Phase 3 trial (378 participants) comparing age groups, not testing overall effectiveness. Results may not confirm broad protection or catch rare side effects.
Disclaimer
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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.
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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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Chang Gung Medical Hospital Linkou
Taoyuan, Taiwan
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National Taiwan University Hospital
Taipei, Taiwan
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National Taiwan University Hospital Hsin-Chu Branch
Hsinchu, Taiwan