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Infectious Disease
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Pharyngitis in Adults (Centor)
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Centor criteria: 0–1 none, 2–3 RADT, 4 empiric.
Decision
Outcome
Decision
Adult pharyngitis — Centor criteria total (fever, tender anterior cervical LAN, tonsillar exudates, no cough)?
✓
0–1 → no testing or antibiotics
✓
2–3 → rapid strep antigen test
✓
4 → empiric penicillin/amoxicillin OR RADT
Outcome
No antibiotics needed; supportive care
Decision
RADT result?
✓
Positive → penicillin or amoxicillin
✓
Negative → no antibiotics
Outcome
Penicillin V or amoxicillin × 10 d (clindamycin/macrolide if allergic)
Outcome
Empiric penicillin or amoxicillin × 10 days
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