A 5-year-old girl presents with an itchy bottom at night, worse at night, suggestive of threadworm infection. What is the best treatment for her infection in the Australian context?
A. Advise dietary changes, such as reducing sugar intake, as the primary treatment.
B. Recommend applying a topical anti-itch cream to the perianal area.
C. Treat only the affected child with a single dose of pyrantel.
D. Reassure the parents that this is common and has low morbidity, requiring no treatment.
E. Treat the whole family with pyrantel or mebendazole, and repeat in 2 weeks.
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