# Pertussis Maternal Immunization Study

> **NCT00553228** · PHASE2,PHASE3 · COMPLETED · sponsor: **Scott Halperin** · enrollment: 320 (actual)

## Conditions studied

- Pregnant Women

## Interventions

- **BIOLOGICAL:** Tdap
- **BIOLOGICAL:** Td

## Key facts

- **NCT ID:** NCT00553228
- **Lead sponsor:** Scott Halperin
- **Sponsor class:** OTHER
- **Phase:** PHASE2,PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2007-11
- **Primary completion:** 2015-12-09
- **Final completion:** 2015-12-09
- **Target enrollment:** 320 (ACTUAL)
- **Last updated:** 2020-08-27

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00553228

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00553228, "Pertussis Maternal Immunization Study". Retrieved via AI Analytics 2026-09-07 from https://api.ai-analytics.org/clinical/NCT00553228. Licensed CC0.

---

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