# A Study on Immunity Duration Against Polio Over 18 Months Infants After 2 or 3 Primary Doses Sabin IPV in China

> **NCT04614597** · — · COMPLETED · sponsor: **Centers for Disease Control and Prevention, China** · enrollment: 774 (actual)

## Conditions studied

- Poliomyelitis

## Interventions

- **BIOLOGICAL:** Sabin strain inactivated polio vaccine

## Key facts

- **NCT ID:** NCT04614597
- **Lead sponsor:** Centers for Disease Control and Prevention, China
- **Sponsor class:** OTHER_GOV
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-10-29
- **Primary completion:** 2021-12-21
- **Final completion:** 2021-12-21
- **Target enrollment:** 774 (ACTUAL)
- **Last updated:** 2022-03-09

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04614597

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04614597, "A Study on Immunity Duration Against Polio Over 18 Months Infants After 2 or 3 Primary Doses Sabin IPV in China". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT04614597. Licensed CC0.

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