Below is an instruction from Human. Write a response.
    ### Instruction:
    Who is at risk for Parasites - Enterobiasis (also known as Pinworm Infection)? ?
    ### Response:
    Risk Factors
    
The people most likely to be infected with pinworm are children under 18, people who take care of infected children and people who are institutionalized. In these groups, the prevalence can reach 50%.
    
Pinworm is the most common worm infection in the United States.
    