Text messaging for Vaccine Hesitancy

Phase-Based Progress Estimates
Los Angeles County Department of Health Services, Los Angeles, CA
Vaccine Hesitancy+1 More
Text messaging - Behavioral
Any Age
All Sexes
What conditions do you have?

Study Summary

This trial will test whether text messages reminding people of transportation resources for getting the flu shot will increase influenza vaccination rates. In this trial, text messaging will be used to treat Vaccine Hesitancy. This is the first time text messaging has been approved by the FDA for this condition. No patients in this trial will receive a placebo.

Eligible Conditions

  • Flu caused by Influenza
  • Vaccine Hesitancy

Treatment Effectiveness

Study Objectives

1 Primary · 1 Secondary · Reporting Duration: 6 months

6 months
Heterogeneity of treatment effects for demographics and distance
Vaccination status at the end of the campaign period

Trial Safety

Side Effects for

Brief Advice
0%sleep disturbance
0%Anxiety or agitation
0%mouth soreness
0%skin irritation
This histogram enumerates side effects from a completed 2019 Phase 4 trial (NCT03174158) in the Brief Advice ARM group. Side effects include: lightheadedness with 0%, Nausea with 0%, sleep disturbance with 0%, headache with 0%, Anxiety or agitation with 0%.

Trial Design

2 Treatment Groups

Standard Texts
1 of 2
Standard Texts with Transportation messaging
1 of 2
Active Control
Experimental Treatment

236000 Total Participants · 2 Treatment Groups

Primary Treatment: Text messaging · No Placebo Group · N/A

Standard Texts with Transportation messaging
Experimental Group · 1 Intervention: Text messaging · Intervention Types: Behavioral
Standard Texts
ActiveComparator Group · 1 Intervention: Text messaging · Intervention Types: Behavioral
First Studied
Drug Approval Stage
How many patients have taken this drug
Text messaging
Completed Phase 4

Trial Logistics

Trial Timeline

Approximate Timeline
Screening: ~3 weeks
Treatment: Varies
Reporting: 6 months
Closest Location: Los Angeles County Department of Health Services · Los Angeles, CA
Photo of Los Angeles 1Photo of Los Angeles 2Photo of Los Angeles 3
2018First Recorded Clinical Trial
1 TrialsResearching Vaccine Hesitancy
1 CompletedClinical Trials

Who is running the clinical trial?

Los Angeles County Department of Public HealthOTHER_GOV
19 Previous Clinical Trials
315,048 Total Patients Enrolled
1 Trials studying Vaccine Hesitancy
142 Patients Enrolled for Vaccine Hesitancy
National Institute on Aging (NIA)NIH
1,350 Previous Clinical Trials
3,088,551 Total Patients Enrolled
University of Southern CaliforniaLead Sponsor
813 Previous Clinical Trials
1,123,884 Total Patients Enrolled
University of California, Los AngelesOTHER
1,382 Previous Clinical Trials
6,285,202 Total Patients Enrolled
Daniella Meeker, PhDPrincipal InvestigatorUniversity of Southern California
3 Previous Clinical Trials
15,445,085 Total Patients Enrolled

Eligibility Criteria

Age Any Age · All Participants · 1 Total Inclusion Criteria

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About The Reviewer

Michael Gill preview

Michael Gill - B. Sc.

First Published: October 9th, 2021

Last Reviewed: August 12th, 2022

Michael Gill holds a Bachelors of Science in Integrated Science and Mathematics from McMaster University. During his degree he devoted considerable time modeling the pharmacodynamics of promising drug candidates. Since then, he has leveraged this knowledge of the investigational new drug ecosystem to help his father navigate clinical trials for multiple myeloma, an experience which prompted him to co-found Power Life Sciences: a company that helps patients access randomized controlled trials.