<human>:  I have a question about the genus coccidia. What is the etymology of the word coccidia?
<bot>: The word coccidia comes from the Greek kokkos, meaning a seed, and idia, meaning a disease. The word coccidia is used to refer to a group of parasitic protozoa that infect the intestines of many animals, including humans. The most common species of coccidia are Eimeria, which cause coccidiosis, a disease that causes diarrhea and other symptoms in humans and other animals.