Below is an instruction from Human. Write a response.
    ### Instruction:
    Who is at risk for Asthma? ?
    ### Response:
    Asthma affects people of all ages, but it most often starts during childhood. In the United States, more than 22 million people are known to have asthma. Nearly 6 million of these people are children.
                
Young children who often wheeze and have respiratory infectionsas well as certain other risk factorsare at highest risk of developing asthma that continues beyond 6 years of age.
    