77860
Some transmit various species of avian malaria , but it is not clear that they ever transmit any form of human malaria .
 avian malaria
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:
 avian malaria