Providing mothers with mobile phone message reminders increases childhood immunisation and vitamin A supplementation coverage in Côte d’Ivoire: a randomised controlled trial

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Romance Dissieka
Marissa Soohoo
Amynah Janmohamed
David Doledec *
(*) Corresponding Author:
David Doledec |


We conducted a randomised controlled trial to assess the effect of providing mothers with mobile voice or text (SMS) reminder messages on health facility attendance at five infant immunisation and vitamin A supplementation (VAS) visits. The study was conducted at 29 health facilities in Korhogo district. Mothers were randomised to receive a voice or text reminder message two days prior to each scheduled visit and two additional reminders for missed doses (n = 798; intervention group), or no phone reminder messages (n = 798; control group). Infants in the intervention group were 2.85 (95% CI: 1.85-4.37), 2.80 (95% CI: 1.88-4.17), 2.68 (95% CI: 1.84- 3.91), and 4.52 (95% CI: 2.84-7.20) times more likely to receive pentavalent 1-3 and MMR/yellow fever doses, respectively, and 5.67 (95% CI: 3.48-9.23) times more likely to receive VAS, as compared to the control group. In the reminder group, 58.3% of infants completed all five visits, compared to 35.7% in the control group (P < 0.001). Providing mothers mobile phone message reminders is a potentially effective strategy for improving immunisation and VAS coverage in Côte d’Ivoire.

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