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A Study on Paxlovid Once in the Market, to Observe Its Safety and Effectiveness in Patients Who Have a High Chance of Getting Severe COVID-19

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

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05890612
Enrollment
3000
Registered
2023-06-06
Start date
2023-11-29
Completion date
2029-02-17
Last updated
2026-08-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Keywords

severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), PAXLOVID, post marketing surveillance (PMS), Korea

Brief summary

The purpose of this study is to look at the safety and effectiveness of PAXLOVID in the real world and not in clinical studies. The study observes patients who have a high chance of getting severe COVID-19 in Korea. This study is seeking participants who are: * Patients with mild-to-moderate COVID-19 symptoms and at high chance of getting severe COVID-19, including hospitalization or death. * Patients who received, are currently receiving, or are going to receive PAXLOVID according to locally approved label. * Patients who have signed informed consent documents after understanding all the important parts of the study. All participants are treated according to routine medical practice and there are no scheduled visits required by this study. All participants will be studied for a follow-up period of 28 days from the last PAXLOVID treatment to understand the safety and the effectiveness of treatment.

Interventions

None listed

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Observational model
CASE_ONLY
Time perspective
OTHER

Eligibility

Sex/Gender
ALL
Age
19 Years to No maximum
Healthy volunteers
No

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.

Design outcomes

Primary

MeasureTime frameDescription
Proportion of patients with an adverse event (AE)Baseline through Day 33The number of AEs experienced, the incidence rate, and the number of occurrences among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of patients with an adverse drug reaction (ADR)Baseline through Day 33The number of ADRs experienced, the incidence rate, and the number of occurrences among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of patients with a serious AE (SAE)Baseline through Day 33The number of SAEs experienced, the incidence rate, and the number of occurrences among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of patients with a serious ADR (SADR)Baseline through Day 33The number of SADRs experienced, the incidence rate, and the number of occurrences among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of patients with an unexpected AE (UAE)Baseline through Day 33The number of UAEs experienced, the incidence rate, and the number of occurrences among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of patients with an unexpected ADR (UADR)Baseline through Day 33The number of UADRs experienced, the incidence rate, and the number of occurrences among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of patients with a serious unexpected AE (SUAE)Baseline through Day 33The number of SUAEs experienced, the incidence rate, and the number of occurrences among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of patients with a serious unexpected ADR (SUADR)Baseline through Day 33The number of SUADRs experienced, the incidence rate, and the number of occurrences among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of COVID-19-related hospitalization from any causeBaseline through Day 33The number and rate of COVID-19-related hospitalizations among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of COVID-19-related death from any causeBaseline through Day 33The number and rate of COVID-19-related deaths among all subjects who received the drug and received at least one safety evaluation will be measured.
Proportion of subjective assessment of COVID-19-related symptomatic changeDay 5, Day 14, Day 33The rate of subjective assessment change (improve/no change/worsened) compared to the baseline for COVID-19-related overall symptoms of all subjects who received the drug and received at least one safety evaluation will be measured.

Countries

South Korea

Contacts

CONTACTPfizer CT.gov Call Center
ClinicalTrials.gov_Inquiries@pfizer.com1-800-718-1021
STUDY_DIRECTORPfizer CT.gov Call Center

Pfizer

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 13, 2026