Causes of Acute Pharyngitis • 200 visits per year per 1000 people - i.e. 400 visits/year for a PCP with a panel of 2,000 pts - 11 million diagnoses a year Viral Causes of Acute Pharyngitis: • Rhinovirus (20%) • Coronavirus (>5%) • Adenovirus (5%) - conjunctiva • HSV 1/2 (4%) — gingivitis/stomatitis • Parainfluenza (2%) - croup • Influenza (2%) • <1%: coxsackievirus A (herpangina), EBV, CMV, HIV-1 Bacterial Causes of Acute Pharyngitis: • Group A beta-hemolytic strep (5-15%) • Group C & G beta-hemolytic strep (5%) • <1%: Neisseria gonorrhea, Corynebacteria diptheriae, arcanobacterium haemolyticum, chlamydia pneumoniae, mycoplasrna pneumoniae - BWH Medicine Chiefs @BrighamChiefs #Pharyngitis #Causes #differential #diagnosis #microbiology
