Portal of entry of poliovirus in mainly_______________?
Correct answer: A. Gastrointestinal tract
- A. Gastrointestinal tract
- B. Nasal mucosa
- C. Lung
- D. Skin
Explanation
Poliovirus usually enters through the mouth and multiplies initially in the oropharyngeal and intestinal mucosa, so the gastrointestinal tract is the main portal. Nasal entry is not the usual route tested for poliovirus.
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