Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Klebsiella infection ?
    ### Response:
    How are Klebsiella infections diagnosed? Klebsiella infections are usually diagnosed by examining a small sample of blood, mucus, and/or urine. Chest x-rays or positron emission tomography (PET scan) may also be used to further evaluate infections that affect the lungs such as community-acquired pneumonia.
    