New COVID booster shows promise in trial

NCT ID NCT06181292

First seen Mar 21, 2026 · Last updated May 16, 2026 · Updated 9 times

Summary

This study tested a new booster vaccine (PHH-1V81) against COVID-19 in 913 adults who had already received mRNA vaccines. The goal was to see if it is safe and boosts the immune system against newer virus variants. Participants received either the new vaccine or an existing one, and researchers compared side effects and antibody levels.

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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.

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Contacts and locations

Locations

  • CAP Centelles

    Centelles, Barcelona, 08540, Spain

  • Hospital Clínico Universitario de Valencia

    Valencia, Valencia, 46010, Spain

  • Hospital Germans Trias i Pujol

    Badalona, Barcelona, 08916, Spain

  • Hospital HM Delfos

    Barcelona, Barcelona, 08023, Spain

  • Hospital HM Puerta del Sur

    Móstoles, Madrid, 28938, Spain

  • Hospital HM Sanchinarro

    Madrid, Madrid, 28050, Spain

  • Hospital Josep Trueta

    Girona, Girona, 17001, Spain

  • Hospital Quironsalud Madrid

    Madrid, Madrid, 28223, Spain

  • Hospital Regional de Málaga

    Málaga, Málaga, 29010, Spain

  • Hospital Universitario de Cruces

    Barakaldo, Vizcaya, 48903, Spain

Conditions

Explore the condition pages connected to this study.