Good that they've discovered a way to reduce the risk, but surely if the same sort of study was done in a more developed country the results might be different because of different safe sex practises.
If a man chooses to get circumcised it is his own decision, but hopefully people won't see the results of this and start circumcising all infants again (something which is in decline, even in the US I believe) because health factors or no it should be their own decision, when they are old enough to understand and make it.