74947
In some tropical countries , such as Peru and Bangladesh , a correlation has been found between copepods ' presence and cholera in untreated water , because the cholera bacteria attach to the surfaces of planktonic animals .
 Peru, Bangladesh, cholera
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:
 Peru, Bangladesh, cholera