Because parasitology is such a broad and diverse field, a variety of career options are available. Most parasitologists are attracted to the field because of their scientific curiosity. Parasitology represents a great career for intelligent young people with inquisitive minds, and research opportunities are virtually unlimited. The variety of research areas in basic and applied research, and in fields from the molecular level to the global level, are unsurpassed when compared to any other field of biology. Many parasitologists are altruists and desire to use their scientific expertise to benefit mankind. Clearly, the myriad of problems that parasites may cause humans provide many opportunities for parasitologists to contribute to the betterment of the human condition.