139848
State epidemiologist Dr. Raoult Ratard disputed the existence of any disease cluster associated with the hurricane in 2006 : " There is no such thing as a single condition such as ‘ Katrina Cough ’ that would be different from the bacterial and viral respiratory conditions we would expect to see at that time of year ... no such outbreak occurred because of Hurricane Katrina . "
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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