This is Dr Basu, experienced Internal Medicine Specialist.
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Since no other symptoms, this is still likely viral.
Viruses are more aggressive this year for unknown reason.
Corona virus, adeno virus, even flu virus can cause protracted symptoms.
Dry cough can be due to the viral bronchitis.
IBuprofen can be use along with dextromethorphan.
If symptoms continue till early next week, then bacterial infection may be suspected.
Otherwise you can still treat this at home with rest, fluids, vitamin C, ecchinacea tea.
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