NCT02154061

Brief Summary

The purpose of the study is to better understand how the use of antibiotics changes micro-organisms in the intestines. The change to micro-organisms in the intestines may change the body's vaccine immune response and alter the effectiveness of the IIV (seasonal flu) vaccine. In particular, the investigators will be looking at certain markers in blood after vaccination with IIV (seasonal flu vaccine) with or without the use of antibiotics before vaccination. There will be two randomized groups. Group A will start taking antibiotic by mouth 3 days prior to vaccination and continue taking antibiotics the day of vaccination and one day after vaccination for a total of 5 days. Group B will only receive the IIV (seasonal flu vaccine) and will not take any antibiotics. The investigators hope to enroll 50 subjects at Emory.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
33

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Apr 2015

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 29, 2014

Completed
5 days until next milestone

First Posted

Study publicly available on registry

June 3, 2014

Completed
10 months until next milestone

Study Start

First participant enrolled

April 1, 2015

Completed
2.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 26, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 26, 2017

Completed
1.1 years until next milestone

Results Posted

Study results publicly available

June 27, 2018

Completed
Last Updated

August 15, 2018

Status Verified

July 1, 2018

Enrollment Period

2.2 years

First QC Date

May 29, 2014

Results QC Date

May 30, 2018

Last Update Submit

July 17, 2018

Conditions

Keywords

Flu Vaccine, Intestinal Microbiome, Antibiotics

Outcome Measures

Primary Outcomes (1)

  • Number of Participants With Four Fold Rise in HAI Titers or HAI 1:40 and Above in Each Group at D30

    Number of participants with four fold rise in HAI titers or HAI 1:40 and above in each group at D30 will be recorded based on immunologic testing of blood samples

    At day 30

Study Arms (2)

IIV Flu Vaccine with Antibiotics

EXPERIMENTAL

This arm will receive antibiotics prior and after IIV administration.

Drug: IIV Flu VaccineDrug: MetronidazoleDrug: NeomycinDrug: Vancomycin

IIV Flu Vaccine

ACTIVE COMPARATOR

This arm will not take antibiotics in conjunction with IIV.

Drug: IIV Flu Vaccine

Interventions

This is an FDA approved and tested Inactivated Flu Vaccine.

Also known as: Fluzone
IIV Flu VaccineIIV Flu Vaccine with Antibiotics

This is a standard antibiotic

Also known as: Flagyl
IIV Flu Vaccine with Antibiotics

This is a standard antibiotic.

IIV Flu Vaccine with Antibiotics

This is a standard antibiotic.

Also known as: Vancocin
IIV Flu Vaccine with Antibiotics

Eligibility Criteria

Age18 Years - 40 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Healthy individuals aged 18-40 years.
  • Able to understand and give informed consent.
  • Women of child-bearing potential (not surgically sterile via tubal ligation, bilateral oophorectomy or hysterectomy or who are not postmenopausal for ≥1 year) must agree to practice adequate contraception that may include, but is not limited to, abstinence, monogamous relationship with vasectomized partner, barrier methods such as condoms, diaphragms, spermicides, intrauterine devices, and licensed hormonal methods for 30 days before and 30 days after TIV vaccination

You may not qualify if:

  • You received blood product within 3 months of enrolling in the study or a live attenuated vaccine within 4 weeks or inactivated vaccines within 2 weeks.
  • You received the 2014-2015 flu vaccine or had a confirmed case of influenza during 2014-2015.
  • You received any antibiotics 6 months prior to enrolling in the study or expect to take antibiotics one month after vaccination.
  • You received probiotics or prebiotics 3 months prior before enrolling in the study or expect to take one month after vaccination.
  • You received proton pump inhibitors, H2 blocker receptors, or antacids 3 months regularly before enrolling in the study or one month after
  • You had an allergic response or sensitivity to past vaccinations.
  • You have health conditions that weaken your body's ability to fight infections or you are taking drugs like steroids that weaken your body's ability to fight infections.(Some nasal and topical steroids are allowed.).
  • You have a chronic medical problem including (but not limited to) insulin dependent diabetes, severe heart disease including arrhythmias, severe lung disease, auto immune diseases and or grade 4 uncontrolled hypertension.
  • Chronic neurological conditions such as seizure disorder, Parkinson disease, myasthenia gravis, neuropathy, or histories of encephalopathy, meningitis or ototoxicity.
  • Any history of gastrointestinal disease, kidney or liver diseases.
  • Alcohol or drug abuse or psychiatric conditions that in the opinion of the investigator would compromise your participation in this trial.
  • Pregnant or are breast feeding.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Emory Vaccine Center

Atlanta, Georgia, 30030, United States

Location

Related Publications (1)

  • Wimmers F, Donato M, Kuo A, Ashuach T, Gupta S, Li C, Dvorak M, Foecke MH, Chang SE, Hagan T, De Jong SE, Maecker HT, van der Most R, Cheung P, Cortese M, Bosinger SE, Davis M, Rouphael N, Subramaniam S, Yosef N, Utz PJ, Khatri P, Pulendran B. The single-cell epigenomic and transcriptional landscape of immunity to influenza vaccination. Cell. 2021 Jul 22;184(15):3915-3935.e21. doi: 10.1016/j.cell.2021.05.039. Epub 2021 Jun 25.

MeSH Terms

Conditions

Influenza, Human

Interventions

Influenza VaccinesMetronidazoleNeomycinVancomycin

Condition Hierarchy (Ancestors)

Respiratory Tract InfectionsInfectionsOrthomyxoviridae InfectionsRNA Virus InfectionsVirus DiseasesRespiratory Tract Diseases

Intervention Hierarchy (Ancestors)

Viral VaccinesVaccinesBiological ProductsComplex MixturesNitroimidazolesNitro CompoundsOrganic ChemicalsImidazolesAzolesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsAminoglycosidesGlycosidesCarbohydratesGlycopeptidesGlycoconjugatesPeptidesAmino Acids, Peptides, and Proteins

Results Point of Contact

Title
Nadine Rouphael, MD
Organization
Emory University

Study Officials

  • Nadine Rouphael, MD

    Emory University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

May 29, 2014

First Posted

June 3, 2014

Study Start

April 1, 2015

Primary Completion

May 26, 2017

Study Completion

May 26, 2017

Last Updated

August 15, 2018

Results First Posted

June 27, 2018

Record last verified: 2018-07

Locations