How long is impetigo contagious?

The infection can pass from a sore through skin-to-skin contact, scratching, or items such as towels, clothing, bedding, and toys. Crusts do not always mean the infection has stopped spreading; damp or newly broken skin deserves extra care. A person may continue to spread bacteria until lesions have dried and treatment has had time to work. Avoid touching the affected area, and keep it covered with a clean dressing when practical.

Arrange a clinical assessment so the treatment matches the extent and location of the infection. Use prescribed topical or oral antibiotics exactly as directed, wash hands after applying medicine, and keep fingernails short. Do not share personal items. Launder used towels, clothes, and bedding, and clean frequently handled surfaces. A child should stay away from close-contact activities until a clinician says returning is appropriate.

Seek prompt medical advice if sores are spreading quickly, involve the eyes or mouth, are painful or swollen, or occur with fever, marked tiredness, or reduced drinking. Get advice sooner for an infant, a person with weakened immunity, or repeated episodes. A clinician can distinguish impetigo from eczema, including [Atopic Dermatitis](/conditions/atopic-dermatitis/), and other causes of [Crusting Skin](/symptoms/skin-crusting/).

Ask which treatment is suitable, when close contact and school or nursery activities can resume, how to cover the sores, and whether household members need advice.