Tapeworms are capable of infecting a wide variety of animals, including humans, and may cause medical problems if present in large numbers. Taenia solium, for instance, may infest humans if they eat the undercooked pork of an infected pig, and Taenia saginata may be passed on to those who eat contaminated raw beef. Troublesome tapeworm populations can be eliminated from a host, however, with the aid of certain medications. Such treatments generally focus on debilitating the attachment capabilities of the parasites and then washing them away with water and other bodily fluids.