Which of the following statements about Pseudomonas is INCORRECT?

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They are obligate aerobes.They can survive in hospital disinfectants.Infections primarily arise from the patient's own flora.They are the leading cause of infections in burn victims.They are gram-positive bacteria.

Explanation

Pseudomonas species are strict aerobes and are known to thrive even in hospital disinfectants. They are most commonly associated with infections in burn patients. However, infections are usually acquired from external sources rather than the patient's endogenous flora. Additionally, Pseudomonas are gram-negative bacteria, not gram-positive.