Sarah is a social scientist and has worked in the field of mHealth for over 5 years with WelTel, a program that is committed to improving health outcomes through evidence-based solutions that use mobile technology such as text messaging in the management of HIV/AIDS and other health issues. WelTel is currently planning for the scale up and launch of its mHealth service delivery model in various HIV comprehensive care clinics in Kenya. Prior to developing the service delivery model, WelTel conducted a randomized controlled trial which proved that mobile phones can be used effectively to improve adherence to antiretroviral treatment (The Lancet, WelTel Kenya1 Randomized Control Trial, Nov 2010)