Given Africa was considered one big country by TheGame™, Necho II's expedition to encircle Africa had one slayer vampire from the Levant (e.g: Lebanon, Israel, or Damascus) on every ship, in order to try to liberate the African provinces. Not only that, but one ship ended up at the Americas.
Alexander the Great liberated Egypt itself (except for its mystical capital).
Re "Dr. Livingstone, I presume", Livingstone was wizard-born, and acted as a watcher to some vampires' adventurers.