Journal of public health management and practice : JPHMP · 2026
A Centralized Text Message Recall for Pediatric Influenza Vaccination, New York City, 2017.
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Cheng Iris, Papadouka Vikki, Ternier Alexandra, Langdon-Embry Marisa, Daskalakis Demetre C, Zucker Jane R
Аннотация
CONTEXT: Influenza vaccination coverage is suboptimal nationwide.
OBJECTIVES: To evaluate the effectiveness of centralized text message recall for influenza vaccination among children conducted by the New York City Department of Health and Mental Hygiene.
DESIGN: A randomized assignment of 149 860 children, split between the intervention and control groups.
SETTING: Pediatric patients drawn from the Citywide Immunization Registry in New York City.
PARTICIPANTS: Children aged 15 months to 18 years who did not receive an influenza vaccine in the 2016-2017 season and as of the study date in the 2017-2018 season.
INTERVENTION: The Citywide Immunization Registry sent a generic Short Message Service (SMS) text message to the parents or guardians of the children: "The Health Department recommends that your child/children receive an annual flu shot. Call your doctor today!"
MAIN OUTCOME MEASURE: Risk ratios of the proportions of children who received an influenza vaccine in the intervention and control groups within 28 days after the text message was sent.
RESULTS: On October 25-26, 2017, 74 553 parents or guardians were sent a text message and 74 526 served as the control group. Of text messages sent, 73% were delivered successfully. Within 28 days of the intervention, 4.7% of children aged 15 months to 4 years in the text message group received an influenza vaccine compared with 4.3% in the control group, a statistically significant 9.5% relative increase in vaccination uptake (RR: 1.095, 95% CI: 1.001-1.199).
CONCLUSIONS: Centralized text messages had a small positive effect on influenza vaccination among younger children. This approach may contribute to improving influenza vaccination in the pediatric population.
OBJECTIVES: To evaluate the effectiveness of centralized text message recall for influenza vaccination among children conducted by the New York City Department of Health and Mental Hygiene.
DESIGN: A randomized assignment of 149 860 children, split between the intervention and control groups.
SETTING: Pediatric patients drawn from the Citywide Immunization Registry in New York City.
PARTICIPANTS: Children aged 15 months to 18 years who did not receive an influenza vaccine in the 2016-2017 season and as of the study date in the 2017-2018 season.
INTERVENTION: The Citywide Immunization Registry sent a generic Short Message Service (SMS) text message to the parents or guardians of the children: "The Health Department recommends that your child/children receive an annual flu shot. Call your doctor today!"
MAIN OUTCOME MEASURE: Risk ratios of the proportions of children who received an influenza vaccine in the intervention and control groups within 28 days after the text message was sent.
RESULTS: On October 25-26, 2017, 74 553 parents or guardians were sent a text message and 74 526 served as the control group. Of text messages sent, 73% were delivered successfully. Within 28 days of the intervention, 4.7% of children aged 15 months to 4 years in the text message group received an influenza vaccine compared with 4.3% in the control group, a statistically significant 9.5% relative increase in vaccination uptake (RR: 1.095, 95% CI: 1.001-1.199).
CONCLUSIONS: Centralized text messages had a small positive effect on influenza vaccination among younger children. This approach may contribute to improving influenza vaccination in the pediatric population.