# Effectiveness of COVID-19 Vaccines Against the SARS-COV-2 Delta (B.1.617.2)

> **NCT05244330** · — · COMPLETED · sponsor: **First Affiliated Hospital Xi'an Jiaotong University** · enrollment: 1500 (actual)

## Conditions studied

- SARS CoV 2 Infection

## Interventions

- **OTHER:** 

## Key facts

- **NCT ID:** NCT05244330
- **Lead sponsor:** First Affiliated Hospital Xi'an Jiaotong University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2021-12-15
- **Primary completion:** 2022-01-15
- **Final completion:** 2022-01-15
- **Target enrollment:** 1500 (ACTUAL)
- **Last updated:** 2022-02-17


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05244330

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05244330, "Effectiveness of COVID-19 Vaccines Against the SARS-COV-2 Delta (B.1.617.2)". Retrieved via AI Analytics 2026-07-07 from https://api.ai-analytics.org/clinical/NCT05244330. Licensed CC0.

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