Many of our client come from different parts of Africa. I was thinking about that, and how they don't realize how dangerously exposed to STDs (sexual transmitted diseases) they are when they have sex with multiple partners. A beautiful story came to my mind. How in Uganda they reduced the HIV rate in a record time making use of the ABC approach.
A for abstinence: The 100% safest defense against STDs is delaying your first time having sex.
B for Be Faithful: be monogamous and aware in case you already have HIV.
C for Condom: Warning people that condoms are not a 100 percent secure, they recommend it in case they reject A and B.
Here I leave you the link where you can find some more information:
And in Spanish: http://www.comminit.com/en/node/192815