65248
Specifically as relates to rabbits , this type of production was nearly universal prior to germ theory understanding of infectious parasites ( especially coccidia ) and the role of nutrition in prevention of abortion and reproductive loss .
 coccidia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 coccidia