My son 18 year old son was hospitalized and in the ICU for two nights due to a severe sore throat and infected tonsil.  He started with a sore throat which after 3 days did not go away.  He was not eating or talking due to the pain.  He had a low grade fever and fatigue.  After two  days of severe pain, we visited the doctor who preformed a strep test, which was negative.  He sent us home with a diagnosis of a virus that had to take its course.  That night, he became delirious and fever spike to 108.  We called paramedics who took him to nearest hospital.  They gave him an IV of fluids and repeated tests for strep.  He had some neurological concerns due to the fever, ie. shaking, deliriousness.  His blood pressure was very low and his fever would spike again to 108 so they put him in ICU and started him on 7 antibiotics to cover for different infection, central line, spinal tap to test for meningitis, tick borne illnesses, incephilitis.  I had a weird feeling that the sickness was due to his throat and swollen tonsil.  He had a tonsil that was puss filled and the size of a small plum.  After all tests came back negative, he was feeling better due to the antibiotics.  They released him on the fourth day and he is fine now.  A very terrifying experience for him and his family for sure.  I am certain it was due to the F throat bacteria.