The feasibility of using mobile-phone based SMS reminders and conditional cash transfers to improve timely immunization in rural Kenya

► Setting up an integrated mobile phone-based system to remind and incentivize mothers to vaccinate their children is feasible. ► The majority of mothers in rural Kenya have access to mobile phones. ► Mothers prefer receive cash incentives through m-Money rather than airtime. ► More extensive engagement of husbands in the community is important.