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

From the article abstract: "As interest in mHealth (including Short Message Services or SMS) increases, it is important to assess potential benefits and limitations of this technology in improving interventions in resource-poor settings. The authors analyzed two case studies (early infant diagnosis of HIV and nutrition surveillance) of three projects in Malawi and Zambia using a conceptual framework that assesses the technical complexity of the programs, with and without the use of SMS technology."

mFHAST Implications: Opportunity for SMS to improve interventions within resource-poor settings