- Conditions
- Influenza, Human, Orthomyxoviridae Infections, RNA Virus Infections, Virus Disease, Respiratory Tract Infections, Respiratory Tract Disease, Vaccines, Physiological Effects of Drugs
- Interventions
- R/R - Autodialers, R/R - Texting, R/R - mailed postcard
- Behavioral
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 6 Months to 17 Years
- Enrollment
- 70,190 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- Los Angeles, California
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- Conditions
- Vaccines
- Interventions
- HPV Vaccine Reminder Recall - Autodialer, HPV Vaccine Reminder Recall - Texting
- Behavioral
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 11 Years to 14 Years
- Enrollment
- 37,003 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2019
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Influenza, Respiratory Tract Infections
- Interventions
- Enhanced texts with Callback by a Person, Enhanced Bidirectional Texts
- Behavioral
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 6 Months and older
- Enrollment
- 246,295 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2023
- U.S. locations
- 2
- States / cities
- Los Angeles, California