100650
The results of these human trials have been controversial , and unfounded accusations in the 1990 s arose that the vaccine had created the conditions necessary for transmission of simian immunodeficiency virus from chimpanzees to humans , causing HIV / AIDS .
 simian immunodeficiency virus
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:
 simian immunodeficiency virus