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E coli vaccine 1 Dose A

Phase 1

Healthy Participants | Small molecule | Other |Pfizer, Inc.|Last Updated: Apr 30, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLEDDMC
Total Trials1
Total Enrollment310

FDA Designations

No designations recorded

Clinical trial landscape

E coli vaccine 1 Dose A · 1 trial · 1 indication

Phase 1 1
NCT07122986A Study to Learn About a Vaccine Against E Coli in Healthy AdultsHealthy Participants
RECRUITING310 Analytics
PHASE1RECRUITING
A Study to Learn About a Vaccine Against E Coli in Healthy Adults
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Study Endpoints

Primary Endpoints

Percentage of participants reporting prespecified local events within 7 days following each vaccination
7 days after each vaccination

Prespecified local reactions (redness, swelling, and pain at the injection site) following each vaccination

Percentage of participants reporting prespecified systemic events within 7 days following each vaccination
7 days after each vaccination

Prespecified systemic events (fever, fatigue, headache, chills, vomiting, diarrhea, joint pain, and muscle pain) following each vaccination

Percentage of participants reporting Adverse Events (AEs) from vaccination 1 through 1 month after the last dose of study intervention
From signing of ICD to 1 month after the last assigned vaccination

Adverse events occurring up to 1 month after the last dose of study intervention

Percentage of participants reporting Medically Attended Adverse Events (MAEs) from vaccination 1 through 12 months after the last dose of study intervention
Baseline up to month 18 with final visit being 12 months after last assigned vaccination

MAEs occurring up to 12 months after the last dose of study intervention

Percentage of participants reporting Serious Adverse Events (SAEs) from vaccination 1 through 12 months after the last dose of study intervention
Baseline up to month 18 with final visit being 12 months after last assigned vaccination

SAEs occurring up to 12 months after the last dose of study intervention

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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
E coli vaccine 1 Dose AEXPERIMENTALCandidate E coli vaccine on day 1 and day 180
E coli vaccine 1 Dose BEXPERIMENTALCandidate E coli vaccine on day 1 and day 180
E coli vaccine 2EXPERIMENTALCandidate E coli vaccine on day 1 and day 180
E coli vaccine 3EXPERIMENTALCandidate E coli vaccine on day 1 and day 180
E coli Vaccine 4 Dose AEXPERIMENTALCandidate E coli vaccine on day 1 and day 180
E coli Vaccine 4 Dose BEXPERIMENTALCandidate E coli vaccine on day 1 and day 180
E coli Vaccine 4 Dose CEXPERIMENTALCandidate E coli vaccine on day 1 and day 180
E coli Vaccine 5 Dose AEXPERIMENTAL -
E coli Vaccine 5 Dose BEXPERIMENTAL -
PlaceboEXPERIMENTALPlacebo received on day 1 and day 180

Interventions

NameTypeDescription
E coli vaccine 1 Dose ADRUGCandidate E coli vaccine 1 Dose A, administered according to a 0, 6-month interval
E coli vaccine 1 Dose BDRUGCandidate E coli vaccine 1 Dose B, administered according to a 0, 6-month interval
E coli vaccine 2DRUGCandidate E coli vaccine 2, administered according to a 0, 6-month interval
E coli vaccine 3DRUGCandidate E coli vaccine 3, administered according to a 0, 6-month interval
E coli Vaccine 4 Dose ADRUGCandidate E coli vaccine 4 Dose A, administered according to a 0, 6-month interval
E coli Vaccine 4 Dose BDRUGCandidate E coli vaccine 4 Dose B, administered according to a 0, 6-month interval
E coli Vaccine 4 Dose CDRUGCandidate E coli vaccine 4 Dose C, administered according to a 0, 6-month interval
E coli Vaccine 5 Dose ADRUGCandidate E coli vaccine 5 Dose A, administered according to a 0, 6-month interval
E coli Vaccine 5 Dose BDRUGCandidate E coli vaccine 5 Dose B, administered according to a 0, 6-month interval
PlaceboDRUGPlacebo administered according to a 0, 6-month interval
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Eligibility Criteria

Age Range18 Years to 64 Years
SexALL
Healthy VolunteersYes
Study Sites11

Ages Eligible for Study: 18 to 64 Years (Adult) Sexes Eligible for Study: All Accepts Healthy Volunteers: Yes Key Inclusion Criteria 1. Adult Participants \>= 18 through \< 64 years of age at the time of enrollment. 2. Healthy participants as determined by medical history, physical examination, an...

Countries:United States
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Frequently asked questions about E coli vaccine 1 Dose A

What is E coli vaccine 1 Dose A used for?

E coli vaccine 1 Dose A is an investigational vaccine being studied for use in healthy participants. It is currently in Phase 1 clinical development, with an ongoing trial evaluating its safety and immunogenicity in healthy adults aged 18 years and older in the United States.

Who makes E coli vaccine 1 Dose A?

E coli vaccine 1 Dose A is being developed by Pfizer, Inc., a biopharmaceutical company traded on the New York Stock Exchange under the ticker symbol PFE. The company is conducting a Phase 1 clinical trial to evaluate the vaccine in healthy adult participants.

What phase is E coli vaccine 1 Dose A in?

E coli vaccine 1 Dose A is in Phase 1 clinical development. It is an investigational vaccine and has not been approved by regulatory authorities. A Phase 1 trial is currently recruiting participants to assess the vaccine's safety and immune response in healthy adults.

What clinical trials is E coli vaccine 1 Dose A in?

E coli vaccine 1 Dose A is being studied in a Phase 1 clinical trial with the identifier NCT07122986, titled "A Study to Learn About a Vaccine Against E Coli in Healthy Adults." This randomized, double-blind, controlled trial is recruiting 310 healthy participants in the United States.

Is E coli vaccine 1 Dose A a small molecule?

Yes, E coli vaccine 1 Dose A is classified as a small molecule modality. It is being developed as a vaccine against E. coli and is currently in Phase 1 clinical testing in healthy adult participants.