DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Impetigo infection (orange) on a 14-year-old boy's nose. Impetigo is a bacterial skin infection caused by Staphylococcus aureus. It causes the formation of pustules that contain fluid filled with bacteria. The infection is highly contagious. Treatment is with antibiotic drugs.
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