Both types of junctional epidermolysis bullosa are rare, affecting fewer than 1 per million people in the United States.
How many people are affected by junctional epidermolysis bullosa ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by junctional epidermolysis bullosa ? [/INST] \n Both types of junctional epidermolysis bullosa are rare, affecting fewer than 1 per million people in the United States.</s>