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Pregnant women get H1N1 vaccine in new safety trial

NCT ID NCT01024400

Completed ⭐️ VACCINE ⭐️ Sponsor: Institut National de la Santé Et de la Recherche Médicale, France Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This phase 2 study tested a non-adjuvanted H1N1 flu vaccine in 110 pregnant women to see if it is safe and triggers a good immune response. Participants received two doses of the vaccine and were monitored for side effects. The goal is to protect both mothers and their babies from the flu.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Non-adjuvanted H1N1 influenza vaccine
What this could lead to
If successful, this could show that the H1N1 flu vaccine is safe and effective for pregnant women, helping protect both mother and baby during flu season.
What could go wrong
This is a small, early-phase study (phase 2) with only 110 participants, so results may not apply to all pregnant women. The vaccine may not produce a strong enough immune response or could cause side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

influenza swine influenza prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

INFLUENZA

Contacts and locations

Locations

  • CHU de Besançon-Hôpital Saint-Jacques

    Besançon, 25030, France

  • Groupe hospitalier Cochin Saint Vincent de Paul

    Paris, 75679, France

  • Hôpital Antoine Béclère

    Clamart, 92141, France

  • Hôpital Robert Debré

    Paris, 75935, France

  • Hôpital Sud de Rennes

    Rennes, 35056, France

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