Male 20 y/o Self employee landscaping Marihuana ocassional user. Heterosexual choices with no regular single partner. He loves parties and Practice Soccer regularly. Ricardo does not speak English so

Male 20 y/o Self employee landscaping Marihuana ocassional user. Heterosexual choices with no regular single partner. He loves parties and Practice Soccer regularly.

Ricardo does not speak English so he comes to see you with his sister. She says that he has a very sore throat and feels very tired. On closer questioning, you find out that the sore throat started approximately 24 hours ago. He has pain on swallowing, and he does not have a cough. He has not taken any tablets for pain. On examination, Ricardo's temperature is 38 degrees centigrade and he has tender enlarged anterior cervical lymph nodes on the left side. He has an enlarged red left tonsil partially covered in white exudate. The right tonsil is also red but not so enlarged. He is breathing and swallowing normally throughout the consultation.

You do not have any access to Ricardo's past medical history as he has just registered with your practice and he previously lived in Brazil. Ricardo's sister says that Ricardo has not had serious medical conditions before and has never been allergic to antibiotics.

What are the provisional primary and differential diagnoses? and why

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