noun
a contagious skin infection characterized by red sores or blisters that can burst and form crusts
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Impetigo is a highly contagious bacterial skin infection that commonly affects children.
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My little sister caught impetigo from school and now we have to be extra careful around her.
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I heard that impetigo is going around the daycare, so make sure to wash your hands frequently.
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The spread of rumors in our office is like a case of impetigo, once it starts, it's hard to contain.