Clinical Trial

A Study to Learn About a Vaccine Against E Coli in Healthy Adults

Recruiting Phase 1
View on ClinicalTrials.gov →
Summary
This study evaluates an investigational vaccine designed to protect against Escherichia coli (E coli). The primary objective is to assess the safety and tolerability of E coli vaccines administered intramuscularly to healthy adults.
Protocol Amendment History 3 amendments
This ClinicalTrials.gov record has been amended 3 times since 2025-08-07; most recent amendment 2026-04-28.
Status change: Not Yet Recruiting → Recruiting 2025-08-26
Trial Details
NCT Number NCT07122986
Lead Sponsor Pfizer
Conditions Healthy Participants
Enrollment 310 participants
Start Date 2025-08-11
Primary Completion 2028-05-26 (estimated)
Study Completion 2028-05-26 (estimated)
Updated on ClinicalTrials.gov 2026-04-30