Enhanced Bidirectional Text Reminders for Respiratory Tract Infections

Phase-Based Progress Estimates
Los Angeles County Department of Health Services, Los Angeles, CA
Respiratory Tract Infections+2 More
Enhanced Bidirectional Texts - Behavioral
Any Age
All Sexes
What conditions do you have?

Study Summary

This trial is taking place in Los Angeles, CA at clinics within the Los Angeles Department of Health clinics. The study design is a comparative effectiveness trial design. Patients will be randomized into 1) receiving enhanced texting with a callback by a trained call-center staff member to schedule a vaccine visit if the patient presses "1" in response to the text, 2) receiving enhanced bidirectional texting with a texting response from a trained call-center staff member who will help the patient schedule a vaccine visit through a series of back-and-forth texts, or 3) standard text reminders (control group). Patients in all arms will receive reminders if they are due for influenza vaccine. Despite the Advisory Committee on Immunization Practices (ACIP) recommendation in 2010 that all people above 6 months of age should receive an annual flu vaccine, vaccination rates remain low: at 6m-4.9 yrs. (70%), 5-17.9 yrs. (56%), 18-64.9 yrs. (38%), and >65 yrs. (63%). The investigators will assess the effectiveness of enhanced text R/R messages as compared to the standard of care control (standard text reminders).

Eligible Conditions

  • Flu caused by Influenza
  • Respiratory Tract Infections

Treatment Effectiveness

Study Objectives

2 Primary · 0 Secondary · Reporting Duration: 6 months

6 months
Receipt of the Annual Influenza Vaccine Among Adult Index Patients
Receipt of the Annual Influenza Vaccine Among Pediatric Index Patients

Trial Safety

Trial Design

3 Treatment Groups

Enhanced Bidirectional Text Reminders
1 of 3
Standard Text Reminders
1 of 3
Enhanced Text Reminders with Callback by Person
1 of 3
Active Control

250000 Total Participants · 3 Treatment Groups

Primary Treatment: Enhanced Bidirectional Text Reminders · No Placebo Group · N/A

Enhanced Bidirectional Text Reminders
ActiveComparator Group · 1 Intervention: Enhanced Bidirectional Texts · Intervention Types: Behavioral
Standard Text RemindersNoIntervention Group · 1 Intervention: Standard Text Reminders · Intervention Types:
Enhanced Text Reminders with Callback by Person
ActiveComparator Group · 1 Intervention: Enhanced texts with Callback by a Person · Intervention Types: Behavioral

Trial Logistics

Trial Timeline

Approximate Timeline
Screening: ~3 weeks
Treatment: Varies
Reporting: 6 months

Trial Background

Peter G Szilagyi, MD
Principal Investigator
University of California, Los Angeles
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 Respiratory Tract Infections
1 CompletedClinical Trials

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.