A patient with a sore throat has a positive Paul Bunnell test. The causative organism is:: (A) EBV, (B) Herpes virus, (C) Adenovirus, (D) Cytomegalovirus
Answer is A. Paul Bunnell test is the standard diagnostic procedure for infectious mononucleosis, which is caused by EBV.
Paul Bunnell test detects heterophile antibody.