Below is an instruction from Human. Write a response.
    ### Instruction:
    How many people are affected by type 1 diabetes ?
    ### Response:
    Type 1 diabetes occurs in 10 to 20 per 100,000 people per year in the United States. By age 18, approximately 1 in 300 people in the United States develop type 1 diabetes. The disorder occurs with similar frequencies in Europe, the United Kingdom, Canada, and New Zealand.
    