Reminder/Recall systems are cost-effective methods to identify and notify families when children are due for vaccinations or are already behind. Reminders and recalls differ in content and can be delivered by various methods—telephone, text message, letter, postcard, or other. Most reminder and recall notices are tailored for individuals, and many are accompanied by educational messages about the importance of vaccination.

Many (EHR) systems are capable of creating reports that identify specific populations and what vaccinations they are due for. Provider staff can then contact those individuals to schedule an appointment. Studies show that reminder/recall activities are a cost-effective way to improve vaccination rates. Some state programs contact patients through mass mailings while others may have office staff call households individually to remind patients and schedule appointments.