Why are early symptoms of a Francisella tularensis infection often difficult to diagnose?
A) Symptoms are often mild and go unnoticed.
B) The bacteria do not grow in culture.
C) Patient symptoms are the only indication that leads to a diagnosis.
D) Symptoms progress so slowly it can be months before the patient seeks medical care.
E) Early symptoms can vary based on how the bacteria are transmitted.
Answer: E
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