Clinical trial Recruiting at 1 site Observational Ages 19 and up

Observing the safety and effectiveness of Paxlovid in patients at high risk for severe COVID-19

Official title: POST MARKETING SURVEILLANCE TO OBSERVE SAFETY AND EFFECTIVENESS OF PAXLOVID IN PATIENTS, AND WHO ARE AT HIGH RISK FOR PROGRESSION TO SEVERE COVID-19

Run by Pfizer · NCT05890612 · Data updated 2026-11-12

This study is testing how safe and effective Paxlovid is for people in Korea who are at high risk of getting severe COVID-19 and have mild-to-moderate symptoms.

More COVID-19 trials

Quick facts

Study typeObservational
Ages19 Years and up
SexAll
Enrollment3000 (estimated)
SponsorPfizer
Industry-sponsored
Locations1 site (Seoul)
StatusRecruiting
StartedNovember 29, 2023
Main results expectedFebruary 17, 2029
Study endsFebruary 17, 2029
Registry record updatedAugust 12, 2026
Trial IDNCT05890612 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include patients with mild-to-moderate COVID-19 symptoms who are at high risk for severe outcomes and have consented to participate.

Probably not a fit

Patients with contraindications to Paxlovid or those receiving investigational medicines during the observation period may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to evaluate the real-world safety and effectiveness of Paxlovid in patients in Korea who are at high risk of developing severe COVID-19. It focuses on individuals with mild-to-moderate symptoms who have received or are set to receive Paxlovid as per local guidelines. Participants will be monitored for 28 days following their last treatment to assess outcomes without any scheduled visits, reflecting routine medical practice.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the real-world effectiveness of Paxlovid, potentially improving treatment strategies for high-risk COVID-19 patients.

How similar studies have gone: Other studies have shown positive outcomes with Paxlovid in clinical settings, suggesting that this observational approach could yield valuable data.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients who received, are currently receiving, or are going to receive PAXLOVID according to locally approved label.
* Patients (or a legally acceptable representative) who are willing to provide written informed consent/assent prior to study enrollment.

Exclusion Criteria:

* Patients with contraindication according to locally approved label of PAXLOVID.
* Patients who are going to receive any investigational medicine during the observation period.

Where it's running

  • Pfizer Korea
    Seoul, South Korea
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.