# Long-Term Immunogenicity of Envacgen® in Children

> **NCT07568522** · — · ACTIVE_NOT_RECRUITING · sponsor: **Medigen Vaccine Biologics Corp.** · enrollment: 220 (actual)

## Conditions studied

- Enterovirus 71 Human

## Interventions

- **BIOLOGICAL:** EV71 vaccine

## Key facts

- **NCT ID:** NCT07568522
- **Lead sponsor:** Medigen Vaccine Biologics Corp.
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2025-11-24
- **Primary completion:** 2026-02-16
- **Final completion:** 2026-07-31
- **Target enrollment:** 220 (ACTUAL)
- **Last updated:** 2026-05-05


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07568522

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07568522, "Long-Term Immunogenicity of Envacgen® in Children". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT07568522. Licensed CC0.

---

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