Prospectively received appointment reminders, motivational interviews and targeted vaccine drives.

Automated and real time phone call reminders, motivational interviewing and targeted vaccine drives applied in sequence

The proportion of enrolled subjects who complete the Diphtheria, pertussis, and tetanus vaccine (DPT3) vaccine series when assessed at 15 months of age.

The proportion of enrolled subjects who complete the measles vaccine series when assessed at 15 months of age.

Vaccine clinic records will be reviewed to identify the total number of eligible patients in the clinic (defined as those presenting to the vaccine clinic with a child receiving their first vaccine) and the number who agreed to participate during the study period.

A modified intervention acceptability, perception and system usability assessment using a Likert scale questionnaire.

The proportion of eligible subjects who received a real-time phone call reminder, counselling, and targeted vaccine drive when indicated

The cost of administering each component of the mHealth bundle will be documented, such as cost of targeted drive and cost of real time phone calls. This will assist in determining the cost to scale the project.