# Long-Term Follow-up Survey of COVID-19 Vaccine After Vaccination

> **NCT04941144** · — · COMPLETED · sponsor: **ModernaTX, Inc.** · enrollment: 8538 (actual)

## Conditions studied

- Coronavirus Disease (COVID-19)

## Interventions

- **BIOLOGICAL:** COVID-19 Vaccine

## Key facts

- **NCT ID:** NCT04941144
- **Lead sponsor:** ModernaTX, Inc.
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2021-12-22
- **Primary completion:** 2023-04-28
- **Final completion:** 2023-04-28
- **Target enrollment:** 8538 (ACTUAL)
- **Last updated:** 2023-05-19


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04941144

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04941144, "Long-Term Follow-up Survey of COVID-19 Vaccine After Vaccination". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT04941144. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*