BUFFALO, N.Y., USA: Scientists from the University at Buffalo School of Dental Medicine will borrow a famous strategy from Greek warfare — the Trojan horse — to fight a fungus that exists in the mouths and skin of nearly half of the world’s population. Oral thrush, a yeast infection recognizable as the white film that coats tongues and throats and is formally known as Candida, is normally harmless and exists commonly in small amounts in the mouths of many people.