Dengue vaccine safety checked in pregnant women
NCT ID NCT04486638
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tracks 500 pregnant women in the US who received the Dengvaxia dengue vaccine. Researchers will monitor mothers and their babies for any side effects or pregnancy complications. The goal is to gather safety data, not to test the vaccine's effectiveness.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Dengue Tetravalent Vaccine, Live (Dengvaxia)
What this could lead to
If this study finds no safety problems, it could provide reassurance about using Dengvaxia during pregnancy.
What could go wrong
This is an observational registry, not a controlled trial, so it cannot prove cause and effect. Results may take years and depend on voluntary reporting.
Disclaimer
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This is a summary of
the original study
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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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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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Study contacts
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Contact
Phone: •••-•••-••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Investigational Site
RECRUITINGSan Juan, Puerto Rico