Most sore throats are caused by colds, the flu, coxsackie virus or mono (mononucleosis). Bacteria that can cause pharyngitis in some cases: 1  Strep throat is caused by group A streptococcus.  Less commonly, bacterial diseases such as gonorrhea and chlamydia can cause sore throat.
Do you need a doctor's referral for an appointment? Some specialty areas at Mayo require a doctor's referral, and some do not. Most insurance plans require a referral from a plan doctor in order to get access to Mayo Clinic. You should check with your insurance company or your doctor prior to seeking care at Mayo.
Mayo Clinic works with Global Edge to authenticate vendors that provide a product or service to one of our campuses. Authentication is important because it: 1  Allows your company to continue to sell to Mayo Clinic. 2  Ensures appropriate 1099 reporting. 3  Ensures appropriate tracking and use of minority suppliers.