A professional who studies characteristics, habits, and life cycles of animal parasites, such as protozoans, tapeworms, roundworms, flukes, and other parasitic organisms, to determine manner in which they attack human beings and animals and effects produced. Responsibilities include:

• Investigates modes of transmission from host to host.
• Develops methods and agents to combat parasites.
• May specialize in study of one variety of parasite, such as animal parasites that attack man, and be designated Medical Parasitologist; of parasitic worms and be designated Helminthologist; of one celled free living and parasitic organisms and be designated Protozoologist.