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The host defense impairments that occur in mechanically ventilated patients can lead to respiratory tract infection in the form of either febrile tracheobronchitis or pneumonia .
 Anatomy: respiratory tract
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: respiratory tract