Ten people in Alaska were recently infected with what is now a relatively rare parasitic worm that they got from eating walrus meat, according to a new report. All 10 were infected with a parasitic worm called Trichinella, that they likely got from eating undercooked walrus meat. The worm causes an illness called trichinellosis, and people with it may have a range of symptoms, including nausea, diarrhea, vomiting, fatigue and fever, as well as swelling of the face and eyes, aching joints and muscle pains, according to the Centers for Disease Control and Prevention (CDC).