Monitoring safety of SPIKEVAX vaccines in South Korea

A Multi-Centre, Prospective, Observational Post-Marketing Surveillance to Investigate the Long-Term Safety of SPIKEVAX BIVALENT and SPIKEVAX X Injection Under Routine Clinical Care in Korea

Observational ModernaTX, Inc. · NCT06333704

This study is checking for any side effects in people aged 12 and older who are getting the SPIKEVAX COVID-19 vaccines in South Korea to make sure they are safe.

Quick facts

Study typeObservational
Enrollment4206 (estimated)
Ages12 Years and up
SexAll
SponsorModernaTX, Inc. Industry-sponsored
Locations24 sites (Wonju, Gangwon-do and 23 other locations)
Trial IDNCT06333704 on ClinicalTrials.gov

What this trial studies

This observational study aims to evaluate the incidence of adverse events and gather safety-related information regarding the SPIKEVAX Bivalent and SPIKEVAX X vaccines in the South Korean population. Participants aged 12 and older who are receiving these vaccines will be monitored for any potential side effects following vaccination. The study will collect data on the safety profile of these mRNA vaccines to ensure their continued safe use in preventing COVID-19 caused by SARS-CoV-2.

Who should consider this trial

Good fit: Ideal candidates include individuals aged 12 and older who are scheduled to receive SPIKEVAX Bivalent or SPIKEVAX X vaccines.

Not a fit: Patients who are not receiving the SPIKEVAX vaccines or those deemed inappropriate for participation by the investigator may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the understanding of the safety profile of SPIKEVAX vaccines, leading to improved patient confidence and vaccination strategies.

How similar studies have performed: Other studies have shown success in monitoring vaccine safety, making this approach consistent with established practices in post-marketing surveillance.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Participants should be 18 years or older for Spikevax bivalent BA.1, SPIKEVAX BIVALENT BA.4/5 vaccine, and 12 years or older for Spikevax XBB.1.5 injection.
* Participants of any age which is approved for the use of SPIKEVAX BIVALENT BA.1, SPIKEVAX BIVALENT BA.4/5 or SPIKEVAX XBB.1.5 for active immunization to prevent COVID-19 caused by SARS-CoV-2.
* Participant who will be vaccinated with SPIKEVAX BIVALENT BA.1, SPIKEVAX BIVALENT BA.4/5 or SPIKEVAX XBB.1.5 following local label approved by Ministry of Food and Drug Safety (MFDS).
* Participant who will be vaccinated with at least one dose of SPIKEVAX BIVALENT BA.1, SPIKEVAX BIVALENT BA.4/5 or SPIKEVAX XBB.1.5.

Exclusion Criteria:

* Participant whose participation is deemed inappropriate at the investigator's discretion.

Note: Other protocol-defined inclusion/exclusion criteria may apply.

Where this trial is running

Wonju, Gangwon-do and 23 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions SARS-CoV-2mRNA-1273mRNA-1273 vaccineSARS-CoV-2 VaccineCoronavirusVirus DiseasesMessenger RNACOVID-19
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.