49052
Authorities responding to public pressure order the collection and cremation of the rats , unaware that the collection itself was the catalyst for the spread of the bubonic plague .
 bubonic plague
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:
 bubonic plague