Cultural Solution for Aids?

From reading an article yesterday on the destruction aids has cost the continent of Africa and also reflecting on a previous class discussion, there is one question that always seems to strike me, where does the responsibilty lie for changing the detrimental and most times harmful cultural views that many African citizens have for dealing with the aids virus? In the article provided it even states that the health minister of South Africa "urged the use of garlic and African potatoe to fight Aids instead of effective treatment". Should the National leaders of these African states be "forced" to see that their methods are ineffective and further hurting their people, or should the world community, more specifically NGO's take the responsibilty upon themselves and try to involve the African governments as little as possible?