Not sure how quickly the one from the post takes, but according to the Wikipedia article, brass disinfects "within two hours or less". I could see plenty of transmission within one to two hours. Perhaps it is a difference of speed?

Still, all regular handles, at least in hospitals, should be uncoated brass. Whenever I see chromed plated handles, slightly worn, exposing the brass below, I think "such a missed opportunity". It shouldn't have been plated to begin with.