Is the vuvuzela different from the horns fans use at baseball games?

No, they don’t. When I go to baseball games, I do not hear that irritating droning noise going on in the background that sounded like a swarm of insects.

But maybe that’s just me…

Oh absolutely. The vuvuzela is in fact no more. They can presently be located way up…& I do mean way up the rectums of thousands of football fans who recently visited South Africa. Must be a bugger to get through customs :¬)