Hello Ive got threadworms and I’ve only ever had them

Patient: Hello Ive got threadworms and I’ve only ever had them once as a child and I’m really clean personal always washing my hands and nails as in a bit oc, cleaned all my bedding. I’ve taken two ovex tablets in the space of two days it’s been 48 hours now since I’ve taken them and I’m still itchy abit and I’ve seen one. Is this normal? Are they going to go or do I need more medicine ?

Doctor:

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