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Risk factors
By Mayo Clinic staffRisk factors for pinworm infection include:
- Poor hygiene. Scratching the anal area directly and poor hand washing are to blame for the spread of pinworm infection.
- Warm climate. Pinworms thrive in milder climates, and higher numbers of infections have been reported in the southern United States and in other countries with warm temperatures year-round.
- Living with children. Pinworm infection is more common in children and is easily spread to others in the family.
