Poor hygine: Since pinworms spread by direct contact with the eggs., poor hygiene and crowded living condition predisposes to infestation.
Answered 10/24/2017
6.1k views
Some: Those who are exposed to others with pinworms, for example, children in daycare. Those who put their fingers in their mouths, or have poor handwashing.
Answered 10/3/2016
5.5k views
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