Which of the following statements about thrush is INCORRECT?

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Thrush is caused by a gram-negative fungus.It presents as a plaque formed by the overgrowth of epithelial and other cells.It often occurs as a result of immunosuppression or systemic illnesses.Thrush can spread among newborns in an epidemic manner.

Explanation

Thrush is caused by a fungus, but it is not gram-negative; it is typically caused by Candida species, which are fungi. The other statements are accurate: thrush appears as plaques of proliferating epithelial and other cells, is commonly seen in immunocompromised individuals or those with systemic diseases, and can affect neonates in outbreaks.