Dental Specialties in US. The American Dental Association recognizes nine dental specialties in which dentists can get additional training and practice in addition to or instead of general dentistry: 1  Dental public health-Study of dental epidemiology and social health policies.
Trichinella spiralis is a parasitic worm that causes the disease Trichinosis. A whipworm is a roundworm that infects the large intestine. Whipworms are found commonly in pork and are often called pork-worms. They are also found in rats, humans, dogs and cats.
Trichinosis is mainly spread when undercooked meat containing Trichinella cysts is eaten. Most often this is pork but can also occur from bear and dog meat. Several subtypes of Trichinella can cause disease with T. spiralis being the most common. After being eaten the larvae are released from their cysts in the stomach.