Text Message Reminder-Recalls For Early Childhood Vaccination
Text Message Reminder-Recalls For Early Childhood Vaccination
Although the investigators have reached the Healthy People 2010 goal of 80% coverage among
 U.S. children 19-35 months of age for the primary immunization series, 20% of children still
 remain underimmunized. In addition, pockets of low immunization coverage and outbreaks of
 vaccine preventable disease persist. Immunization reminder-recalls have been shown to be
 successful, but have been limited by the ability to identify and reach large target
 populations in a real-time, automated fashion. Reminder-recalls via text message may offer an
 innovative opportunity to improve vaccination coverage. Currently, 91% of Americans own a
 cell phone. Prior research by our team suggests that text messages reminder recalls may be an
 effective tool to remind parents about their children's vaccines. In this study, the
 investigators will demonstrate the effectiveness of tailored text message appointment and
 immunization reminders linked to a well-established and functional immunization registry to
 increase coverage rates and timeliness of the sentinel vaccines of MMR and HepA. The
 investigators will target parents of young children from an underserved population that is
 primarily Latino, with low socioeconomic status.
Inclusion Criteria:

 -  Parents of child >9 months to 25 months

 -  Child with at least one visit to one of the participating clinical sites in the
 previous 12 months

 -  Parental cell phone number recorded in the registration system