From the background in PubMed: Patient reminder systems are an evidence-based way to improve childhood vaccination rates but are difficult to implement in low- and middle-income countries (LMICs). Short Message Service (SMS) texts may offer a potential low-cost solution, especially in LMICs where mobile phones are becoming more ubiquitous.

mFHAST Implications: Feasibility of using SMS for increasing childhood vaccination rates in LMIC settings