One shot in pregnancy could shield babies from whooping cough

NCT ID NCT07596199

First seen Jun 25, 2026 · Last updated Jul 09, 2026 · Updated 3 times

Summary

This phase 3 trial will give a single dose of the dTpa vaccine (Boostrix) to 95 healthy Japanese pregnant women between 27 and 37 weeks of pregnancy. The goal is to see if the vaccine triggers strong immunity in the mothers and passes protective antibodies to their babies at birth. Researchers will also monitor safety for both mothers and newborns.

What this could mean

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

Active substance
dTpa vaccine (Boostrix)
What this could lead to
If successful, this could show that a single dTpa shot during pregnancy safely boosts antibodies passed to the baby, potentially preventing whooping cough in newborns.
What could go wrong
This is a small, single-arm, open-label study with no placebo group, so results may be less reliable. It only includes Japanese women, so findings may not apply to other populations.

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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

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • GSK Investigational Site

    RECRUITING

    Fukushima, 965-8585, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Hokkaido, 085-8512, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Kanagawa, 236-0004, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Kyoto, 604-8845, Japan

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Osaka, 583-8588, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Saitama, 330-0855, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • GSK Investigational Site

    RECRUITING

    Saitama, 336-8522, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Shizuoka, 424-8636, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Tokyo, 113-8519, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Chiba, 279-0001, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • GSK Investigational Site

    RECRUITING

    Fukui, 910-0833, Japan

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

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