During my tenure in Nicaragua, I applied for a grant that addressed the need to bring quality health care to underserved areas of that country. My proposal was based on Mao Zedong's attempt to do the same thing in China. He called the program "Barefoot Doctors" and, in a real small nutshell, medical doctors would train motivated individuals picked by their respective villages in the essentials of medicine (like the 10% mentioned above) then send them back to the villages as primary care providers. My proposal did not receive the grant (I submitted it too late) but it served as the basis for my third book Barefoot Doctors (A Quiet Revolution).
The biggest and best advantage my Barefoot Doctors idea has over Chairman Mao's is the internet. Surprisingly, internet access is available in the least expected places. Where it is not, there are many like-minded groups such as PATH trying to transform the face of medical access throughout the world. MY vision includes getting access to volunteer specialists 24 hours a day, 7 days a week. We CAN do this. It will just take time, money, innovation, and motivated people.
Hesperian Health is a wonderful endeavor created and run by people who have a real heart for serving. If you get the chance, head over to their website, browse around awhile, purchases the resources you are interested in, and donate to them if you feel the need. Their mission is similar to mine.