# The Effect of Simultaneous Versus Sequential Intramuscular Vaccine Injections on Pain Levels in Infants

> **NCT07455305** · NA · COMPLETED · sponsor: **Istanbul University - Cerrahpasa** · enrollment: 110 (actual)

## Conditions studied

- Injection Pain Prevention
- Injection Pain

## Interventions

- **OTHER:** Simultaneous injection
- **OTHER:** Sequential injection

## Key facts

- **NCT ID:** NCT07455305
- **Lead sponsor:** Istanbul University - Cerrahpasa
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-09-01
- **Primary completion:** 2021-11-15
- **Final completion:** 2021-11-15
- **Target enrollment:** 110 (ACTUAL)
- **Last updated:** 2026-03-06


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07455305

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07455305, "The Effect of Simultaneous Versus Sequential Intramuscular Vaccine Injections on Pain Levels in Infants". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT07455305. Licensed CC0.

---

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