3894
In rhesus monkeys , intravenous challenge with 0 . 6 x 10 ( 10 ) to 2 . 2 x 10 ( 10 ) Pseudomonas aeruginosa organisms caused acute illness of 4 to 5 days ' duration with spontaneous recovery in 13 of 15 monkeys ; blood cultures became negative 3 to 17 days after challenge .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 None