When it comes to health issues, one of the major challenges of controlling the outbreak of any disease is real time information. The internet has already proved quite pivotal in tracking the outbreak of the H1N1 (swine flu) Virus. Twitter, Google, and Wikipedia have been all excellent tools in obtaining real time information about the outbreak and this was certainly crucial in controlling the outbreaks.
The problem is that in the developing world mobile adoption far eclipses internet adoption, so a model that facilitates the real time data streams from mobile phones is certainly of interest to health officials in the developing and developed world.
This video shows the concept of how a system like that would work. Feel free to share your thoughts about this in the comment section below.