I find it quite likely. In the US, we have different attitudes about conception control than others in this world. I'd say that we rely much, much more on abstinence-only sex education than the rest of the world, especially in Europe.
As we've famously seen a few months ago, teen pregnancy often results from the mixed messages kids get.
Africa and Latin America have lower teenage pregnancy rates than USA? As said, I’m skeptical.
According to Wiki, the highest teen pregnancy rates are in Niger, where 53% of women have given birth before the age of 18.
The US teen pregnancy rate, which includes the ages of 19 and 19, is 8.6%. Slightly lower than Niger’s. But we do lead the world among “advanced” countries. USA, USA ...
http://en.wikipedia.org/wiki/Teenage_pregnancy