Study: NCT04001322

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Community engagement
Description: The government will conduct a cascade of sensitization meetings with traditional leaders at all levels to promote newborn line listing (birth registration), reconciliation of child's vaccination status and defaulter tracking (home-based follow up of children who have missed their vaccination doses) by health providers and community leaders

Intervention type: OTHER
Group type: OTHER
Intervention: Community engagement
Description: The government will conduct a cascade of sensitization meetings with traditional leaders at all levels to promote newborn line listing (birth registration), reconciliation of child's vaccination status and defaulter tracking (home-based follow up of children who have missed their vaccination doses) by health providers and community leaders

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: IRISS advert for opt-in
Description: A module to advertise and demonstrate how individuals can opt-in to IRISS to receive the messages will be included in the community engagement sensitization meetings.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: One-time SMS broadcast on immunization
Description: General broadcast of SMS messages on the importance of immunization to all active mobile phone subscribers in the intervention LGAs

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Scheduled weekly SMS reminder of health facility RI schedule to community leaders
Description: Traditional and religious leaders who have a phone or access to a phone and have been registered on IRISS will receive SMS messages on the immunization session schedule of the health facilities in their communities, so they can disseminated the information through their town announcers to inform parents and caregivers. For example, Ribah clinic is holding a vaccination session tomorrow from 8am to 2pm. Please take your child there to vaccinate them and encourage your neighbors to vaccinate their children.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Scheduled bi weekly RI messages to community leaders
Description: Traditional and religious leaders who own or have access to a phone and have been registered on IRISS will receive SMS messages on immunization, to share same with community members. The message categories are: 1) Educational messages that provide facts and increase knowledge, e.g. Have you heard of Penta vaccine? It protects against 5 diseases: they are diphtheria, whooping cough, tetanus, HiB and Hepatitis B. 2) Informative messages that dispel myths about immunization, e.g. Getting more than one vaccine at the same time does not harm a child. It is very important to completely receive all vaccine doses for full protection. 3) Normative messages to promote positive norms, e.g. Our religious leaders have immunized their children, what are we waiting for? 4) Motivational messages to inspire action, e.g. Each visit to the health center for vaccination will reap many health benefits. Say YES to good health, be on time and complete your child's vaccination.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Responsive individualized child vaccination schedule reminder to caregivers who opt-in
Description: Parents and caregivers who voluntarily registered their child's information into IRISS will receive a reminder, a day before, about their child's due vaccines and the schedule of vaccination sessions in the health facilities within their locality (wards), e.g. Greetings! Amina is due for Penta 1 tomorrow, kindly visit Ribah clinic. They vaccinate on Mondays and Thursdays.

Intervention type: OTHER
Group type: OTHER
Intervention: Responsive one-time SMS message on hand washing to those that erroneously register on IRISS
Description: If individuals from control LGAs encounter IRISS adverts inadvertently and erroneously register into IRISS expecting a message, to avoid a loss in trust if no message is sent, they will receive a one-time general message about the importance of hand-washing, e.g. Wash your hand with soap and water every time you finish from to the toilet, to maintain clean hands and avoid germs that make you sick.