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The 2009 flu pandemic in Thailand , part of an epidemic in 2009 of a new strain of influenza A virus subtype H1N1 causing what has been commonly called swine flu , made its first confirmed appearance in Thailand on May 13 , 2009 , when Thailand confirmed two cases of swine flu .
 Thailand, Thailand, Thailand
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Thailand, Thailand, Thailand