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, a parasitic disease caused by eating raw or undercooked meat infected with roundworm larvae, was once common but is no longer a problem in commercially grown pork and hasn't been for years, says Ceci Snyder, with the National Pork Board in Des Moines. Those myths die hard, she says.